{"id":5977,"date":"2025-08-26T10:06:26","date_gmt":"2025-08-26T03:06:26","guid":{"rendered":"https:\/\/mayxaydunghanoi.com\/?p=5977"},"modified":"2025-12-13T03:14:23","modified_gmt":"2025-12-12T20:14:23","slug":"may-khoan-coc-nhoi-trong-thi-cong-nen-mong","status":"publish","type":"post","link":"https:\/\/mayxaydunghanoi.com\/vi\/may-khoan-coc-nhoi-trong-thi-cong-nen-mong\/","title":{"rendered":"M\u00e1y khoan c\u1ecdc nh\u1ed3i trong thi c\u00f4ng n\u1ec1n m\u00f3ng"},"content":{"rendered":"<h2>T\u00ecm hi\u1ec3u to\u00e0n v\u1ec1 c\u1ea5u t\u1ea1o v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y khoan c\u1ecdc nh\u1ed3i c\u00f9ng d\u1ecbch v\u1ee5 khoan c\u1ecdc nh\u1ed3i chuy\u00ean nghi\u1ec7p c\u1ee7a c\u00f4ng ty Hanoi Vietnam.<\/h2>\n<p>Trong nhi\u1ec1u n\u0103m qua, <strong>m\u00e1y khoan c\u1ecdc nh\u1ed3i<\/strong> \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t thi\u1ebft b\u1ecb kh\u00f4ng th\u1ec3 thi\u1ebfu trong c\u00e1c c\u00f4ng tr\u00ecnh h\u1ea1 t\u1ea7ng quy m\u00f4 l\u1edbn nh\u01b0 c\u1ea7u, \u0111\u01b0\u1eddng, cao \u1ed1c hay nh\u00e0 m\u00e1y c\u00f4ng nghi\u1ec7p. Vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u00fang lo\u1ea1i m\u00e1y v\u00e0 l\u1ef1a ch\u1ecdn d\u1ecbch v\u1ee5 khoan c\u1ecdc nh\u1ed3i uy t\u00edn quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng n\u1ec1n m\u00f3ng c\u0169ng nh\u01b0 ti\u1ebfn \u0111\u1ed9 d\u1ef1 \u00e1n.<\/p>\n<p>Trong b\u00e0i vi\u1ebft n\u00e0y, Hanoi Vietnam s\u1ebd ph\u00e2n t\u00edch s\u00e2u c\u00e1c kh\u00eda c\u1ea1nh k\u1ef9 thu\u1eadt, c\u00f4ng n\u0103ng th\u1ef1c t\u1ebf, chi ph\u00ed v\u1eadn h\u00e0nh v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c d\u00f2ng m\u00e1y khoan kh\u00e1c, t\u1eeb \u0111\u00f3 gi\u00fap k\u1ef9 s\u01b0 v\u00e0 ch\u1ee7 \u0111\u1ea7u t\u01b0 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u00fang \u0111\u1eafn.<\/p>\n<hr \/>\n<h3>M\u00e1y khoan c\u1ecdc nh\u1ed3i l\u00e0 g\u00ec?<\/h3>\n<p>\u0110\u1ec3 hi\u1ec3u r\u00f5 v\u1ec1 <strong>m\u00e1y khoan c\u1ecdc nh\u1ed3i<\/strong>, tr\u01b0\u1edbc ti\u00ean c\u1ea7n n\u1eafm \u0111\u01b0\u1ee3c kh\u00e1i ni\u1ec7m <strong>khoan c\u1ecdc nh\u1ed3i<\/strong>. C\u1ecdc nh\u1ed3i l\u00e0 lo\u1ea1i m\u00f3ng s\u00e2u, \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00e1ch khoan m\u1ed9t h\u1ed1 theo k\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1ed9 s\u00e2u thi\u1ebft k\u1ebf, sau \u0111\u00f3 l\u1eafp \u0111\u1eb7t l\u1ed3ng th\u00e9p v\u00e0 \u0111\u1ed5 b\u00ea t\u00f4ng tr\u1ef1c ti\u1ebfp xu\u1ed1ng h\u1ed1 khoan. Kh\u00e1c v\u1edbi c\u1ecdc \u00e9p s\u1eb5n, c\u1ecdc nh\u1ed3i \u0111\u01b0\u1ee3c thi c\u00f4ng ngay t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng n\u00ean c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u s\u00e2u r\u1ea5t l\u1edbn, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u ch\u1ecbu t\u1ea3i cho c\u00e1c c\u00f4ng tr\u00ecnh c\u1ea7u, nh\u00e0 cao t\u1ea7ng, c\u1ea3ng bi\u1ec3n, hay c\u00e1c d\u1ef1 \u00e1n h\u1ea1 t\u1ea7ng tr\u00ean n\u1ec1n \u0111\u1ea5t y\u1ebfu.<\/p>\n<p><strong>Khoan c\u1ecdc nh\u1ed3i<\/strong> l\u00e0 qu\u00e1 tr\u00ecnh t\u1ea1o h\u1ed1 khoan b\u1eb1ng m\u00e1y m\u00f3c chuy\u00ean d\u1ee5ng k\u1ebft h\u1ee3p dung d\u1ecbch gi\u1eef th\u00e0nh (bentonite ho\u1eb7c polymer) \u0111\u1ec3 ng\u0103n s\u1eadp v\u00e1ch. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1ea3m b\u1ea3o t\u1ea1o c\u1ecdc ch\u1eafc ch\u1eafn, truy\u1ec1n t\u1ea3i tr\u1ecdng c\u00f4ng tr\u00ecnh xu\u1ed1ng nh\u1eefng l\u1edbp \u0111\u1ea5t, \u0111\u00e1 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c t\u1ed1t. C\u1ecdc nh\u1ed3i c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1eddng k\u00ednh t\u1eeb 600mm \u0111\u1ebfn h\u01a1n 2500mm, v\u1edbi chi\u1ec1u s\u00e2u tr\u00ean 60\u201380m, \u0111i\u1ec1u m\u00e0 c\u1ecdc b\u00ea t\u00f4ng \u0111\u00fac s\u1eb5n kh\u00f3 \u0111\u00e1p \u1ee9ng.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-5986\" src=\"https:\/\/mayxaydunghanoi.com\/wp-content\/uploads\/2025\/08\/may-khoan-coc-nhoi-trong-thi-cong-nen-mong-1.jpg\" alt=\"So sa\u0301nh ki\u0301ch thu\u031bo\u031b\u0301c giu\u031b\u0303a ma\u0301y JU160 c\u1ee7a Zhenzhong va\u0300 DH608-120M\" width=\"600\" height=\"400\" \/><\/p>\n<p>Ch\u00ednh v\u00ec v\u1eady, \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00f4ng ngh\u1ec7 n\u00e0y, c\u1ea7n c\u00f3 <strong>m\u00e1y khoan c\u1ecdc nh\u1ed3i<\/strong> \u2013 thi\u1ebft b\u1ecb c\u01a1 gi\u1edbi chuy\u00ean d\u1ee5ng gi\u00fap khoan t\u1ea1o l\u1ed7 theo thi\u1ebft k\u1ebf. M\u00e1y khoan c\u1ecdc nh\u1ed3i th\u01b0\u1eddng l\u00e0 lo\u1ea1i khoan xoay th\u1ee7y l\u1ef1c, c\u1ea5u t\u1ea1o g\u1ed3m khung g\u1ea7m b\u00e1nh x\u00edch, c\u1ea7n khoan Kelly, \u0111\u1ea7u khoan, t\u1eddi n\u00e2ng v\u00e0 h\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c cung c\u1ea5p m\u00f4-men xo\u1eafn. M\u00e1y c\u00f3 kh\u1ea3 n\u0103ng khoan tr\u00ean nhi\u1ec1u \u0111\u1ecba ch\u1ea5t kh\u00e1c nhau, t\u1eeb \u0111\u1ea5t s\u00e9t, c\u00e1t, s\u1ecfi cho t\u1edbi t\u1ea7ng \u0111\u00e1 phong h\u00f3a.<\/p>\n<p>Vi\u1ec7c s\u1eed d\u1ee5ng m\u00e1y khoan c\u1ecdc nh\u1ed3i mang l\u1ea1i nhi\u1ec1u l\u1ee3i \u00edch v\u01b0\u1ee3t tr\u1ed9i:<\/p>\n<ul>\n<li>\u0110\u1ea3m b\u1ea3o thi c\u00f4ng ch\u00ednh x\u00e1c v\u1ec1 v\u1ecb tr\u00ed, \u0111\u1ed9 s\u00e2u, \u0111\u1ed9 nghi\u00eang c\u1ee7a c\u1ecdc.<\/li>\n<li>T\u0103ng n\u0103ng su\u1ea5t v\u00e0 r\u00fat ng\u1eafn ti\u1ebfn \u0111\u1ed9 c\u00f4ng tr\u00ecnh.<\/li>\n<li>Gi\u1ea3m rung ch\u1ea5n, h\u1ea1n ch\u1ebf \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00f4ng tr\u00ecnh l\u00e2n c\u1eadn.<\/li>\n<li>T\u1ea1o \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 thi c\u00f4ng c\u1ecdc c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn m\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c kh\u00f3 \u0111\u00e1p \u1ee9ng.<\/li>\n<\/ul>\n<p>N\u00f3i c\u00e1ch kh\u00e1c, <strong>m\u00e1y khoan c\u1ecdc nh\u1ed3i<\/strong> ch\u00ednh l\u00e0 \u201ctr\u00e1i tim\u201d c\u1ee7a c\u00f4ng ngh\u1ec7 khoan c\u1ecdc nh\u1ed3i hi\u1ec7n \u0111\u1ea1i. N\u00f3 quy\u1ebft \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng n\u1ec1n m\u00f3ng v\u00e0 l\u00e0 c\u01a1 s\u1edf \u0111\u1ec3 c\u00f4ng tr\u00ecnh b\u1ec1n v\u1eefng h\u00e0ng ch\u1ee5c n\u0103m sau.<\/p>\n<hr \/>\n<h3>Vai tr\u00f2 quan tr\u1ecdng c\u1ee7a m\u00e1y khoan c\u1ecdc nh\u1ed3i trong thi c\u00f4ng n\u1ec1n m\u00f3ng<\/h3>\n<p>Trong thi c\u00f4ng n\u1ec1n m\u00f3ng, c\u1ecdc nh\u1ed3i \u0111\u00f3ng vai tr\u00f2 truy\u1ec1n t\u1ea3i tr\u1ecdng c\u1ee7a c\u00f4ng tr\u00ecnh xu\u1ed1ng c\u00e1c l\u1edbp \u0111\u1ea5t \u0111\u00e1 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ef1c t\u1ed1t. Qu\u00e1 tr\u00ecnh thi c\u00f4ng y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c cao, t\u1eeb vi\u1ec7c \u0111\u1ecbnh v\u1ecb, khoan t\u1ea1o l\u1ed7, gi\u1eef th\u00e0nh v\u00e1ch \u0111\u1ebfn \u0111\u1ed5 b\u00ea t\u00f4ng. \u0110\u00e2y l\u00e0 l\u00fd do m\u00e0 <strong>m\u00e1y khoan c\u1ecdc nh\u1ed3i<\/strong> \u0111\u01b0\u1ee3c xem l\u00e0 thi\u1ebft b\u1ecb ch\u1ee7 l\u1ef1c trong ng\u00e0nh x\u00e2y d\u1ef1ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n<p>M\u00e1y khoan c\u1ecdc nh\u1ed3i kh\u00f4ng ch\u1ec9 gi\u00fap t\u0103ng n\u0103ng su\u1ea5t thi c\u00f4ng m\u00e0 c\u00f2n \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i cho c\u00f4ng tr\u00ecnh. N\u1ebfu tr\u01b0\u1edbc \u0111\u00e2y, c\u00e1c c\u00f4ng tr\u00ecnh l\u1edbn ph\u1ea3i thu\u00ea thi\u1ebft b\u1ecb ngo\u1ea1i qu\u1ed1c v\u1edbi chi ph\u00ed cao th\u00ec nay t\u1ea1i Vi\u1ec7t Nam \u0111\u00e3 c\u00f3 nhi\u1ec1u d\u00f2ng m\u00e1y nh\u1eadp kh\u1ea9u c\u0169ng nh\u01b0 d\u1ecbch v\u1ee5 khoan c\u1ecdc nh\u1ed3i chuy\u00ean nghi\u1ec7p, gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed nh\u01b0ng v\u1eabn \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng qu\u1ed1c t\u1ebf.<\/p>\n<p>M\u00e1y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c d\u1ef1 \u00e1n nh\u01b0 c\u1ea7u v\u01b0\u1ee3t s\u00f4ng, c\u1ea7u c\u1ea1n, nh\u00e0 cao t\u1ea7ng, nh\u00e0 m\u00e1y c\u00f4ng nghi\u1ec7p n\u1eb7ng, hay c\u00e1c d\u1ef1 \u00e1n d\u00e2n d\u1ee5ng \u1edf khu v\u1ef1c \u0111\u1ea5t y\u1ebfu. Ch\u00ednh v\u00ec v\u1eady, k\u1ef9 s\u01b0 v\u00e0 ch\u1ee7 \u0111\u1ea7u t\u01b0 c\u1ea7n hi\u1ec3u r\u00f5 v\u1ec1 m\u00e1y khoan c\u1ecdc nh\u1ed3i \u0111\u1ec3 c\u00f3 l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p.<\/p>\n<hr \/>\n<h3>C\u1ea5u t\u1ea1o v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y khoan c\u1ecdc nh\u1ed3i<\/h3>\n<p>M\u00e1y khoan c\u1ecdc nh\u1ed3i th\u01b0\u1eddng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo nguy\u00ean l\u00fd khoan xoay k\u1ebft h\u1ee3p v\u1edbi dung d\u1ecbch gi\u1eef th\u00e0nh v\u00e1ch (bentonite ho\u1eb7c polymer). Thi\u1ebft b\u1ecb ch\u00ednh g\u1ed3m: c\u1ea7n khoan (Kelly bar), h\u1ec7 th\u1ed1ng t\u1eddi n\u00e2ng, \u0111\u1ed9ng c\u01a1, khung g\u1ea7m, b\u00e0n xoay v\u00e0 \u0111\u1ea7u khoan.<\/p>\n<ul>\n<li><strong>C\u1ea7n khoan (Kelly bar):<\/strong> th\u01b0\u1eddng c\u00f3 3\u20134 \u0111o\u1ea1n, c\u00f3 kh\u1ea3 n\u0103ng k\u00e9o d\u00e0i \u0111\u1ec3 \u0111\u1ea1t chi\u1ec1u s\u00e2u khoan l\u00ean t\u1edbi 60\u201380m.<\/li>\n<li><strong>\u0110\u1ea7u khoan:<\/strong> c\u00f3 nhi\u1ec1u lo\u1ea1i, nh\u01b0 m\u0169i khoan xo\u1eafn, g\u1ea7u khoan, khoan ru\u1ed9t g\u00e0, ho\u1eb7c m\u0169i khoan \u0111\u00e1 c\u1ee9ng t\u00f9y \u0111\u1ecba ch\u1ea5t.<\/li>\n<li><strong>H\u1ec7 th\u1ed1ng th\u1ee7y l\u1ef1c:<\/strong> cung c\u1ea5p l\u1ef1c xo\u1eafn v\u00e0 l\u1ef1c \u00e9p xu\u1ed1ng, \u0111\u1ea3m b\u1ea3o khoan nhanh v\u00e0 \u1ed5n \u0111\u1ecbnh.<\/li>\n<li><strong>Dung d\u1ecbch gi\u1eef th\u00e0nh v\u00e1ch:<\/strong> b\u01a1m v\u00e0o h\u1ed1 khoan nh\u1eb1m ng\u0103n s\u1ea1t l\u1edf \u0111\u1ea5t, \u0111\u1ed3ng th\u1eddi t\u1ea1o m\u00f4i tr\u01b0\u1eddng thi c\u00f4ng an to\u00e0n khi \u0111\u1ed5 b\u00ea t\u00f4ng.<\/li>\n<\/ul>\n<p>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng: \u0111\u1ea7u khoan \u0111\u01b0\u1ee3c d\u1eabn \u0111\u1ed9ng xoay, v\u1eeba c\u1eaft v\u1eeba l\u1ea5y \u0111\u1ea5t ra ngo\u00e0i. Dung d\u1ecbch bentonite gi\u1eef v\u00e1ch h\u1ed1 khoan kh\u00f4ng b\u1ecb s\u1eadp. Sau khi \u0111\u1ea1t \u0111\u1ed9 s\u00e2u thi\u1ebft k\u1ebf, l\u1ed3ng th\u00e9p \u0111\u01b0\u1ee3c th\u1ea3 xu\u1ed1ng v\u00e0 ti\u1ebfn h\u00e0nh \u0111\u1ed5 b\u00ea t\u00f4ng b\u1eb1ng \u1ed1ng tremie t\u1eeb \u0111\u00e1y l\u00ean.<\/p>\n<p>Nh\u1edd c\u00f4ng ngh\u1ec7 khoan xoay hi\u1ec7n \u0111\u1ea1i, <strong>m\u00e1y khoan c\u1ecdc nh\u1ed3i<\/strong> c\u00f3 th\u1ec3 thi c\u00f4ng tr\u00ean nhi\u1ec1u \u0111\u1ecba ch\u1ea5t kh\u00e1c nhau: \u0111\u1ea5t s\u00e9t, c\u00e1t, s\u1ecfi, th\u1eadm ch\u00ed c\u1ea3 t\u1ea7ng \u0111\u00e1 phong h\u00f3a.<\/p>\n<hr \/>\n<h3>Ph\u00e2n lo\u1ea1i c\u00e1c d\u00f2ng m\u00e1y khoan c\u1ecdc nh\u1ed3i ph\u1ed5 bi\u1ebfn hi\u1ec7n nay<\/h3>\n<p>M\u00e1y khoan c\u1ecdc nh\u1ed3i c\u00f3 nhi\u1ec1u d\u00f2ng, m\u1ed7i lo\u1ea1i ph\u00f9 h\u1ee3p v\u1edbi quy m\u00f4 v\u00e0 \u0111i\u1ec1u ki\u1ec7n c\u00f4ng tr\u00ecnh kh\u00e1c nhau. C\u00f3 th\u1ec3 chia th\u00e0nh c\u00e1c nh\u00f3m sau:<\/p>\n<ol>\n<li><strong>M\u00e1y khoan c\u1ecdc nh\u1ed3i g\u1eafn tr\u00ean c\u1ea7n tr\u1ee5c b\u00e1nh x\u00edch<\/strong><br \/>\n\u0110\u00e2y l\u00e0 lo\u1ea1i truy\u1ec1n th\u1ed1ng, s\u1eed d\u1ee5ng c\u1ea9u b\u00e1nh x\u00edch l\u00e0m khung g\u1ea7m, l\u1eafp th\u00eam thi\u1ebft b\u1ecb khoan. \u01afu \u0111i\u1ec3m l\u00e0 t\u00ednh linh ho\u1ea1t, khoan \u0111\u01b0\u1ee3c nhi\u1ec1u \u0111\u01b0\u1eddng k\u00ednh l\u1edbn, nh\u01b0ng nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 c\u1ed3ng k\u1ec1nh v\u00e0 chi ph\u00ed cao.<\/li>\n<li><strong>M\u00e1y khoan c\u1ecdc nh\u1ed3i th\u1ee7y l\u1ef1c chuy\u00ean d\u1ee5ng<\/strong><br \/>\nC\u00e1c th\u01b0\u01a1ng hi\u1ec7u n\u1ed5i ti\u1ebfng nh\u01b0 Bauer (\u0110\u1ee9c), Soilmec (\u00dd), Sany, XCMG (Trung Qu\u1ed1c), Nippon Sharyo (Nh\u1eadt). M\u00e1y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho khoan nh\u1ed3i, hi\u1ec7u su\u1ea5t cao, v\u1eadn h\u00e0nh t\u1ef1 \u0111\u1ed9ng, ph\u00f9 h\u1ee3p d\u1ef1 \u00e1n c\u1ea7u v\u00e0 cao \u1ed1c.<\/li>\n<li><strong>M\u00e1y khoan c\u1ecdc nh\u1ed3i mini<\/strong><br \/>\nLo\u1ea1i n\u00e0y nh\u1ecf g\u1ecdn, d\u00f9ng cho c\u00f4ng tr\u00ecnh trong ng\u00f5 h\u1eb9p, nh\u00e0 d\u00e2n ho\u1eb7c c\u00f4ng tr\u00ecnh c\u00f3 di\u1ec7n t\u00edch h\u1ea1n ch\u1ebf. Tuy c\u00f4ng su\u1ea5t th\u1ea5p nh\u01b0ng hi\u1ec7u qu\u1ea3 cho c\u00f4ng tr\u00ecnh nh\u1ecf, d\u1ec5 di chuy\u1ec3n.<\/li>\n<li><strong>M\u00e1y khoan c\u1ecdc nh\u1ed3i d\u1ea1ng g\u1ea7u xoay (rotary drilling rig)<\/strong><br \/>\n\u0110\u00e2y l\u00e0 c\u00f4ng ngh\u1ec7 hi\u1ec7n \u0111\u1ea1i nh\u1ea5t, c\u00f3 kh\u1ea3 n\u0103ng khoan s\u00e2u 80\u2013100m, \u0111\u01b0\u1eddng k\u00ednh l\u00ean t\u1edbi 2500mm. Th\u01b0\u1eddng s\u1eed d\u1ee5ng trong d\u1ef1 \u00e1n \u0111\u1eb7c bi\u1ec7t nh\u01b0 c\u1ea7u v\u01b0\u1ee3t s\u00f4ng, h\u1ea7m metro.<\/li>\n<\/ol>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn d\u00f2ng m\u00e1y n\u00e0o ph\u1ee5 thu\u1ed9c v\u00e0o y\u00eau c\u1ea7u thi\u1ebft k\u1ebf c\u1ecdc, \u0111i\u1ec1u ki\u1ec7n m\u1eb7t b\u1eb1ng v\u00e0 ng\u00e2n s\u00e1ch \u0111\u1ea7u t\u01b0.<\/p>\n<hr \/>\n<h3>\u01afu nh\u01b0\u1ee3c \u0111i\u1ec3m khi s\u1eed d\u1ee5ng m\u00e1y khoan c\u1ecdc nh\u1ed3i<\/h3>\n<p><strong>\u01afu \u0111i\u1ec3m:<\/strong><\/p>\n<ul>\n<li>Kh\u1ea3 n\u0103ng thi c\u00f4ng c\u1ecdc \u0111\u01b0\u1eddng k\u00ednh l\u1edbn (\u00d8600\u20132500mm).<\/li>\n<li>Thi c\u00f4ng \u0111\u01b0\u1ee3c tr\u00ean nhi\u1ec1u \u0111\u1ecba ch\u1ea5t ph\u1ee9c t\u1ea1p.<\/li>\n<li>\u0110\u1ed9 ch\u00ednh x\u00e1c cao, ki\u1ec3m so\u00e1t \u0111\u1ed9 s\u00e2u, \u0111\u1ed9 ch\u1ed1i.<\/li>\n<li>H\u1ea1n ch\u1ebf rung ch\u1ea5n, \u00edt \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00f4ng tr\u00ecnh l\u00e2n c\u1eadn so v\u1edbi \u0111\u00f3ng c\u1ecdc.<\/li>\n<\/ul>\n<p><strong>Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong><\/p>\n<ul>\n<li>Chi ph\u00ed \u0111\u1ea7u t\u01b0 m\u00e1y m\u00f3c cao.<\/li>\n<li>C\u1ea7n \u0111\u1ed9i ng\u0169 k\u1ef9 s\u01b0, th\u1ee3 l\u00e0nh ngh\u1ec1.<\/li>\n<li>Y\u00eau c\u1ea7u ki\u1ec3m so\u00e1t dung d\u1ecbch bentonite \u0111\u1ec3 tr\u00e1nh s\u1ef1 c\u1ed1 s\u1eadp v\u00e1ch.<\/li>\n<li>Th\u1eddi gian chu\u1ea9n b\u1ecb m\u1eb7t b\u1eb1ng v\u00e0 qu\u1ea3n l\u00fd b\u00f9n th\u1ea3i ph\u1ee9c t\u1ea1p.<\/li>\n<\/ul>\n<p>Nh\u01b0 v\u1eady, vi\u1ec7c l\u1ef1a ch\u1ecdn <strong>m\u00e1y khoan c\u1ecdc nh\u1ed3i<\/strong> c\u1ea7n c\u00e2n nh\u1eafc gi\u1eefa \u01b0u \u0111i\u1ec3m v\u01b0\u1ee3t tr\u1ed9i v\u00e0 nh\u1eefng th\u00e1ch th\u1ee9c v\u1ec1 chi ph\u00ed, k\u1ef9 thu\u1eadt.<\/p>\n<hr \/>\n<h3>Ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn m\u00e1y khoan c\u1ecdc nh\u1ed3i cho c\u00f4ng tr\u00ecnh<\/h3>\n<p>Khi quy\u1ebft \u0111\u1ecbnh mua ho\u1eb7c thu\u00ea m\u00e1y, nh\u00e0 th\u1ea7u c\u1ea7n xem x\u00e9t:<\/p>\n<ul>\n<li><strong>\u0110\u01b0\u1eddng k\u00ednh v\u00e0 chi\u1ec1u s\u00e2u thi\u1ebft k\u1ebf c\u1ecdc<\/strong> \u2013 X\u00e1c \u0111\u1ecbnh lo\u1ea1i m\u00e1y c\u00f3 c\u1ea7n Kelly ph\u00f9 h\u1ee3p.<\/li>\n<li><strong>\u0110\u1ecba ch\u1ea5t c\u00f4ng tr\u00ecnh<\/strong> \u2013 N\u1ebfu g\u1eb7p l\u1edbp \u0111\u00e1, c\u1ea7n m\u00e1y c\u00f3 m\u00f4-men xo\u1eafn l\u1edbn v\u00e0 m\u0169i khoan \u0111\u1eb7c ch\u1ee7ng.<\/li>\n<li><strong>Kh\u00f4ng gian thi c\u00f4ng<\/strong> \u2013 V\u1edbi m\u1eb7t b\u1eb1ng ch\u1eadt h\u1eb9p, n\u00ean ch\u1ecdn m\u00e1y mini ho\u1eb7c lo\u1ea1i khung g\u1ecdn.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng t\u00e0i ch\u00ednh<\/strong> \u2013 M\u00e1y ch\u00e2u \u00c2u (Bauer, Soilmec) gi\u00e1 cao nh\u01b0ng b\u1ec1n; m\u00e1y Trung Qu\u1ed1c (Sany, XCMG) chi ph\u00ed th\u1ea5p h\u01a1n, d\u1ec5 t\u00ecm ph\u1ee5 t\u00f9ng.<\/li>\n<li><strong>D\u1ecbch v\u1ee5 b\u1ea3o h\u00e0nh, ph\u1ee5 t\u00f9ng thay th\u1ebf<\/strong> \u2013 R\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ti\u1ebfn \u0111\u1ed9 c\u00f4ng tr\u00ecnh.<\/li>\n<\/ul>\n<p>Vi\u1ec7c thu\u00ea d\u1ecbch v\u1ee5 khoan c\u1ecdc nh\u1ed3i uy t\u00edn thay v\u00ec \u0111\u1ea7u t\u01b0 m\u00e1y m\u1edbi c\u0169ng l\u00e0 gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 cho nhi\u1ec1u nh\u00e0 th\u1ea7u v\u1eeba v\u00e0 nh\u1ecf.<\/p>\n<hr \/>\n<h3>So s\u00e1nh m\u00e1y khoan c\u1ecdc nh\u1ed3i nh\u1eadp kh\u1ea9u v\u00e0 m\u00e1y trong n\u01b0\u1edbc<\/h3>\n<p>\u1ede Vi\u1ec7t Nam, ph\u1ea7n l\u1edbn m\u00e1y khoan c\u1ecdc nh\u1ed3i \u0111\u1ec1u nh\u1eadp kh\u1ea9u. C\u00e1c d\u00f2ng n\u1ed5i b\u1eadt:<\/p>\n<table>\n<thead>\n<tr>\n<th>Xu\u1ea5t x\u1ee9<\/th>\n<th>Th\u01b0\u01a1ng hi\u1ec7u ti\u00eau bi\u1ec3u<\/th>\n<th>\u01afu \u0111i\u1ec3m<\/th>\n<th>Nh\u01b0\u1ee3c \u0111i\u1ec3m<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u1ee9c\/\u00dd<\/td>\n<td>Bauer, Soilmec<\/td>\n<td>C\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn, \u0111\u1ed9 b\u1ec1n cao, t\u1ef1 \u0111\u1ed9ng h\u00f3a t\u1ed1t<\/td>\n<td>Gi\u00e1 th\u00e0nh \u0111\u1eaft, ph\u1ee5 t\u00f9ng kh\u00f3 t\u00ecm<\/td>\n<\/tr>\n<tr>\n<td>Nh\u1eadt B\u1ea3n<\/td>\n<td>Nippon Sharyo, Hitachi<\/td>\n<td>M\u00e1y b\u1ec1n, ti\u1ebft ki\u1ec7m nhi\u00ean li\u1ec7u, d\u1ec5 v\u1eadn h\u00e0nh<\/td>\n<td>Gi\u00e1 v\u1eabn cao, \u00edt m\u1eabu m\u1edbi<\/td>\n<\/tr>\n<tr>\n<td>Trung Qu\u1ed1c<\/td>\n<td>Sany, XCMG<\/td>\n<td>Gi\u00e1 r\u1ebb, ph\u1ee5 t\u00f9ng d\u1ec5 thay, \u0111a d\u1ea1ng c\u00f4ng su\u1ea5t<\/td>\n<td>\u0110\u1ed9 b\u1ec1n k\u00e9m h\u01a1n, c\u1ea7n b\u1ea3o d\u01b0\u1ee1ng th\u01b0\u1eddng xuy\u00ean<\/td>\n<\/tr>\n<tr>\n<td>N\u1ed9i \u0111\u1ecba c\u1ea3i ti\u1ebfn<\/td>\n<td>M\u1ed9t s\u1ed1 x\u01b0\u1edfng trong n\u01b0\u1edbc l\u1eafp r\u00e1p t\u1eeb c\u1ea9u c\u0169<\/td>\n<td>Chi ph\u00ed r\u1ebb, ph\u00f9 h\u1ee3p c\u00f4ng tr\u00ecnh nh\u1ecf<\/td>\n<td>Thi\u1ebfu \u1ed5n \u0111\u1ecbnh, kh\u00f3 \u0111\u1ea1t ti\u00eau chu\u1ea9n c\u00f4ng tr\u00ecnh l\u1edbn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Nh\u01b0 v\u1eady, v\u1edbi c\u00f4ng tr\u00ecnh tr\u1ecdng \u0111i\u1ec3m, n\u00ean ch\u1ecdn m\u00e1y ch\u00e2u \u00c2u ho\u1eb7c Nh\u1eadt. C\u00f2n v\u1edbi d\u1ef1 \u00e1n d\u00e2n d\u1ee5ng, m\u00e1y Trung Qu\u1ed1c l\u00e0 l\u1ef1a ch\u1ecdn ti\u1ebft ki\u1ec7m.<\/p>\n<hr \/>\n<h3>Quy tr\u00ecnh thi c\u00f4ng khoan c\u1ecdc nh\u1ed3i b\u1eb1ng m\u00e1y hi\u1ec7n \u0111\u1ea1i<\/h3>\n<ol>\n<li><strong>\u0110\u1ecbnh v\u1ecb c\u1ecdc:<\/strong> S\u1eed d\u1ee5ng m\u00e1y to\u00e0n \u0111\u1ea1c, GPS \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u00fang v\u1ecb tr\u00ed.<\/li>\n<li><strong>L\u1eafp \u0111\u1eb7t \u1ed1ng v\u00e1ch:<\/strong> \u0110\u1ea3m b\u1ea3o h\u1ed1 khoan kh\u00f4ng b\u1ecb s\u1eadp mi\u1ec7ng.<\/li>\n<li><strong>Khoan t\u1ea1o l\u1ed7:<\/strong> M\u00e1y xoay li\u00ean t\u1ee5c \u0111\u01b0a \u0111\u1ea5t ra ngo\u00e0i, \u0111\u1ed3ng th\u1eddi b\u01a1m dung d\u1ecbch gi\u1eef v\u00e1ch.<\/li>\n<li><strong>Ki\u1ec3m tra \u0111\u1ed9 s\u00e2u:<\/strong> So s\u00e1nh v\u1edbi thi\u1ebft k\u1ebf, x\u1eed l\u00fd n\u1ebfu g\u1eb7p d\u1ecb v\u1eadt.<\/li>\n<li><strong>H\u1ea1 l\u1ed3ng th\u00e9p:<\/strong> C\u1ea9u th\u1ea3 l\u1ed3ng th\u00e9p v\u00e0o h\u1ed1 khoan, \u0111\u1ea3m b\u1ea3o th\u1eb3ng \u0111\u1ee9ng.<\/li>\n<li><strong>\u0110\u1ed5 b\u00ea t\u00f4ng b\u1eb1ng \u1ed1ng tremie:<\/strong> \u0110\u1ed5 t\u1eeb \u0111\u00e1y l\u00ean \u0111\u1ec3 tr\u00e1nh ph\u00e2n t\u1ea7ng.<\/li>\n<li><strong>Ho\u00e0n thi\u1ec7n c\u1ecdc:<\/strong> R\u00fat \u1ed1ng v\u00e1ch, v\u1ec7 sinh b\u00f9n th\u1ea3i.<\/li>\n<\/ol>\n<p>Quy tr\u00ecnh n\u00e0y y\u00eau c\u1ea7u ki\u1ec3m so\u00e1t nghi\u00eam ng\u1eb7t t\u1eebng b\u01b0\u1edbc, n\u1ebfu sai s\u00f3t s\u1ebd \u1ea3nh h\u01b0\u1edfng ch\u1ea5t l\u01b0\u1ee3ng c\u1ecdc v\u00e0 \u0111\u1ed9 an to\u00e0n c\u1ee7a to\u00e0n b\u1ed9 c\u00f4ng tr\u00ecnh.<\/p>\n<hr \/>\n<h3>Kinh nghi\u1ec7m v\u1eadn h\u00e0nh v\u00e0 b\u1ea3o d\u01b0\u1ee1ng m\u00e1y khoan c\u1ecdc nh\u1ed3i<\/h3>\n<p>M\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh hi\u1ec7u qu\u1ea3 thi c\u00f4ng l\u00e0 b\u1ea3o d\u01b0\u1ee1ng thi\u1ebft b\u1ecb. M\u1ed9t s\u1ed1 kinh nghi\u1ec7m:<\/p>\n<ul>\n<li>Th\u01b0\u1eddng xuy\u00ean ki\u1ec3m tra d\u1ea7u th\u1ee7y l\u1ef1c, m\u1ee1 b\u00f4i tr\u01a1n.<\/li>\n<li>Thay l\u1ecdc gi\u00f3, l\u1ecdc d\u1ea7u \u0111\u1ecbnh k\u1ef3.<\/li>\n<li>Ki\u1ec3m tra \u0111\u1ed9 m\u00f2n c\u1ee7a c\u1ea7n Kelly, c\u00e1p t\u1eddi, m\u0169i khoan.<\/li>\n<li>V\u1ec7 sinh b\u00f9n \u0111\u1ea5t tr\u00ean g\u1ea7u khoan sau ca l\u00e0m vi\u1ec7c.<\/li>\n<li>Ki\u1ec3m so\u00e1t h\u1ec7 th\u1ed1ng \u0111i\u1ec7n, c\u1ea3m bi\u1ebfn \u0111\u1ec3 tr\u00e1nh s\u1ef1 c\u1ed1 d\u1eebng m\u00e1y \u0111\u1ed9t ng\u1ed9t.<\/li>\n<\/ul>\n<p>N\u1ebfu b\u1ea3o d\u01b0\u1ee1ng \u0111\u00fang c\u00e1ch, m\u00e1y c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng b\u1ec1n b\u1ec9 h\u00e0ng ch\u1ee5c n\u0103m, gi\u1ea3m chi ph\u00ed v\u1eadn h\u00e0nh cho nh\u00e0 th\u1ea7u.<\/p>\n<hr \/>\n<h3>D\u1ecbch v\u1ee5 khoan c\u1ecdc nh\u1ed3i chuy\u00ean nghi\u1ec7p c\u1ee7a Hanoi Vietnam<\/h3>\n<p>Ngo\u00e0i vi\u1ec7c cung c\u1ea5p thi\u1ebft b\u1ecb, <strong>C\u00f4ng ty TNHH Hanoi Vietnam<\/strong> hi\u1ec7n \u0111ang tri\u1ec3n khai <strong>d\u1ecbch v\u1ee5 khoan c\u1ecdc nh\u1ed3i tr\u1ecdn g\u00f3i<\/strong> cho c\u00e1c d\u1ef1 \u00e1n tr\u00ean kh\u1eafp c\u1ea3 n\u01b0\u1edbc.<\/p>\n<ul>\n<li><strong>Thi\u1ebft b\u1ecb hi\u1ec7n \u0111\u1ea1i:<\/strong> S\u1edf h\u1eefu nhi\u1ec1u d\u00f2ng m\u00e1y khoan c\u1ecdc nh\u1ed3i nh\u1eadp kh\u1ea9u t\u1eeb Nh\u1eadt B\u1ea3n, H\u00e0n Qu\u1ed1c, Trung Qu\u1ed1c, ph\u00f9 h\u1ee3p c\u00f4ng tr\u00ecnh c\u1ea7u \u0111\u01b0\u1eddng, nh\u00e0 cao t\u1ea7ng, c\u1ea3ng bi\u1ec3n.<\/li>\n<li><strong>\u0110\u1ed9i ng\u0169 k\u1ef9 s\u01b0 kinh nghi\u1ec7m:<\/strong> Tr\u1ef1c ti\u1ebfp ch\u1ec9 huy thi c\u00f4ng, x\u1eed l\u00fd \u0111\u1ecba ch\u1ea5t ph\u1ee9c t\u1ea1p, \u0111\u1ea3m b\u1ea3o \u0111\u00fang ti\u00eau chu\u1ea9n TCVN v\u00e0 ti\u1ebfn \u0111\u1ed9.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u:<\/strong> T\u01b0 v\u1ea5n l\u1ef1a ch\u1ecdn \u0111\u01b0\u1eddng k\u00ednh, chi\u1ec1u s\u00e2u, ph\u01b0\u01a1ng \u00e1n dung d\u1ecbch gi\u1eef th\u00e0nh v\u00e1ch ti\u1ebft ki\u1ec7m nh\u1ea5t.<\/li>\n<li><strong>Chi ph\u00ed h\u1ee3p l\u00fd:<\/strong> D\u1ecbch v\u1ee5 \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ph\u00f9 h\u1ee3p t\u1eebng lo\u1ea1i c\u00f4ng tr\u00ecnh, minh b\u1ea1ch, c\u1ea1nh tranh.<\/li>\n<\/ul>\n<p>V\u1edbi kh\u1ea9u hi\u1ec7u \u201cKh\u00e1ch h\u00e0ng h\u00e0i l\u00f2ng \u2013 C\u00f4ng tr\u00ecnh th\u00e0nh c\u00f4ng\u201d, Hanoi Vietnam cam k\u1ebft mang t\u1edbi ch\u1ea5t l\u01b0\u1ee3ng n\u1ec1n m\u00f3ng b\u1ec1n v\u1eefng v\u00e0 an to\u00e0n cho m\u1ecdi d\u1ef1 \u00e1n.<\/p>\n<hr \/>\n<h3>K\u1ebft lu\u1eadn<\/h3>\n<p>B\u00e0i vi\u1ebft \u0111\u00e3 ph\u00e2n t\u00edch to\u00e0n di\u1ec7n v\u1ec1 <strong>m\u00e1y khoan c\u1ecdc nh\u1ed3i<\/strong>: t\u1eeb c\u1ea5u t\u1ea1o, nguy\u00ean l\u00fd, ph\u00e2n lo\u1ea1i, \u01b0u nh\u01b0\u1ee3c \u0111i\u1ec3m, ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn \u0111\u1ebfn quy tr\u00ecnh v\u1eadn h\u00e0nh. \u0110\u1eb7c bi\u1ec7t, d\u1ecbch v\u1ee5 khoan c\u1ecdc nh\u1ed3i c\u1ee7a <strong>Hanoi Vietnam<\/strong> l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1i \u01b0u cho c\u00e1c ch\u1ee7 \u0111\u1ea7u t\u01b0 v\u00e0 nh\u00e0 th\u1ea7u \u0111ang t\u00ecm ki\u1ebfm gi\u1ea3i ph\u00e1p thi c\u00f4ng n\u1ec1n m\u00f3ng ch\u1ea5t l\u01b0\u1ee3ng cao.<\/p>\n<ul>\n<li>M\u00e1y khoan c\u1ecdc nh\u1ed3i l\u00e0 thi\u1ebft b\u1ecb ch\u1ee7 l\u1ef1c trong thi c\u00f4ng n\u1ec1n m\u00f3ng hi\u1ec7n \u0111\u1ea1i.<\/li>\n<li>Vi\u1ec7c ch\u1ecdn m\u00e1y ph\u00f9 h\u1ee3p gi\u00fap ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng c\u00f4ng tr\u00ecnh.<\/li>\n<li>D\u1ecbch v\u1ee5 khoan c\u1ecdc nh\u1ed3i Hanoi Vietnam mang \u0111\u1ebfn s\u1ef1 an t\u00e2m v\u1edbi thi\u1ebft b\u1ecb hi\u1ec7n \u0111\u1ea1i, k\u1ef9 s\u01b0 gi\u00e0u kinh nghi\u1ec7m v\u00e0 chi ph\u00ed t\u1ed1i \u01b0u.<\/li>\n<\/ul>\n<hr \/>\n<p><strong>C\u00f4ng ty TNHH Hanoi Vietnam<\/strong><br \/>\n<strong>Tr\u1ee5 s\u1edf:<\/strong> S\u1ed1 35, L\u00f4 BT3, Khu \u0111\u00f4 th\u1ecb m\u1edbi \u0110\u1eb7ng X\u00e1 2, \u0110\u1eb7ng X\u00e1, Gia L\u00e2m, H\u00e0 N\u1ed9i<br \/>\n<strong>Kho b\u00e3i:<\/strong> Th\u00f4n Ph\u00f9 D\u1ef1c 1, x\u00e3 Ph\u00f9 \u0110\u1ed5ng, huy\u1ec7n Gia L\u00e2m, H\u00e0 N\u1ed9i<br \/>\n<strong>Hotline:<\/strong> 0906601755<br \/>\n<strong>Website:<\/strong> <a href=\"https:\/\/mayxaydunghanoi.com\/\">Mayxaydunghanoi.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u to\u00e0n v\u1ec1 c\u1ea5u t\u1ea1o v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y khoan c\u1ecdc nh\u1ed3i c\u00f9ng d\u1ecbch v\u1ee5 khoan c\u1ecdc nh\u1ed3i chuy\u00ean nghi\u1ec7p c\u1ee7a c\u00f4ng ty Hanoi Vietnam. Trong nhi\u1ec1u n\u0103m qua, m\u00e1y khoan c\u1ecdc nh\u1ed3i \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t thi\u1ebft b\u1ecb kh\u00f4ng th\u1ec3 thi\u1ebfu trong c\u00e1c c\u00f4ng tr\u00ecnh h\u1ea1 t\u1ea7ng quy m\u00f4 l\u1edbn nh\u01b0 c\u1ea7u, \u0111\u01b0\u1eddng, cao \u1ed1c hay nh\u00e0 m\u00e1y c\u00f4ng nghi\u1ec7p. Vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u00fang lo\u1ea1i&#8230;<\/p>\n","protected":false},"author":1,"featured_media":4749,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-5977","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>M\u00e1y khoan c\u1ecdc nh\u1ed3i trong thi c\u00f4ng n\u1ec1n m\u00f3ng - Hanoi Vietnam Co., Ltd<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mayxaydunghanoi.com\/vi\/may-khoan-coc-nhoi-trong-thi-cong-nen-mong\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M\u00e1y khoan c\u1ecdc nh\u1ed3i trong thi c\u00f4ng n\u1ec1n m\u00f3ng\" \/>\n<meta property=\"og:description\" content=\"T\u00ecm hi\u1ec3u to\u00e0n v\u1ec1 c\u1ea5u t\u1ea1o v\u00e0 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y khoan c\u1ecdc nh\u1ed3i c\u00f9ng d\u1ecbch v\u1ee5 khoan c\u1ecdc nh\u1ed3i chuy\u00ean nghi\u1ec7p c\u1ee7a c\u00f4ng ty Hanoi Vietnam. 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