CN102864786A - Hole deviation control method for drilling in deep hole curtain grouting - Google Patents

Hole deviation control method for drilling in deep hole curtain grouting Download PDF

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Publication number
CN102864786A
CN102864786A CN2012103666829A CN201210366682A CN102864786A CN 102864786 A CN102864786 A CN 102864786A CN 2012103666829 A CN2012103666829 A CN 2012103666829A CN 201210366682 A CN201210366682 A CN 201210366682A CN 102864786 A CN102864786 A CN 102864786A
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CN
China
Prior art keywords
hole
drilling
boring
hole depth
depth
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012103666829A
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Chinese (zh)
Inventor
宋玉才
焦家训
张玉莉
陈斌
李小勇
刘强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEZHOUBA GROUP FOUNDATION ENGINEERING Co Ltd
Original Assignee
GEZHOUBA GROUP FOUNDATION ENGINEERING Co Ltd
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Publication date
Application filed by GEZHOUBA GROUP FOUNDATION ENGINEERING Co Ltd filed Critical GEZHOUBA GROUP FOUNDATION ENGINEERING Co Ltd
Priority to CN2012103666829A priority Critical patent/CN102864786A/en
Publication of CN102864786A publication Critical patent/CN102864786A/en
Pending legal-status Critical Current

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Abstract

Disclosed is a hole deviation control method for drilling in deep hole curtain grouting. Before spud-in, four corners of a rig substructure is anchored by expansion bolts, the rig abdomen is fixed by a draw bar, so that the rig body can be guaranteed to be stable during the drilling process; during the drilling, a long drilling tool is used for core drilling for the construction within 2/3 of the hole depth of the drill hole along with the gradual increase of the hole depth, and the drill hole deviation within 2/3 of the hole depth is controlled to be within 1/2 of a designed permissible value; and under 2/3 of the hole depth, a three-wing clad sheet or a diamond roller bit is used for drilling on the whole section without coring, and the accurate drill hole drilled on the upper portion is used as a guide to finish the drilling. According to the method, the long drilling tool is used for drilling the upper portion of the drill hole, the accurate drill hole drilled on the upper portion is used as a guide for the lower portion, the three-wing clad sheet or the diamond roller bit is used for drilling on the whole section without coring, so that an offset distance at the bottom of the drill hole is not larger than 2.0m.

Description

A kind of deep hole curtain grouting boring hole deviation control method
Technical field
The present invention relates to the construction field of hydraulic structure curtain grouting, be specifically related to a kind of curtain grouting deviation controlling method that the boring hole depth surpasses 100m that solves.
Background technology
The hydraulic structure cementation construction technique normalizing (DL/T 5148-2012) of existing use explicitly calls for the curtain grouting hole deviation, " in the construction of many rounds; allow offset distance to be not more than 2.5m during hole depth 100m at the bottom of the hole, hole depth during greater than 100m the hole depth maximum deflection difference value should determine according to the engineering actual conditions ".
Construct according to a conventional method greater than the curtain of 100m boring hole deviation for hole depth and to be difficult to control the hole deviation deviation and to reach and be not more than 2.0m.
In fact the rule of development of hole deviation is that offset distance increases sooner with the hole depth increase, and the faster offset distance increase of rate of penetration is faster; So for deep hole, should take new method at the bottom of the control hole offset distance as target.
Along with hydroelectric development is shifted in the mountain area southwester, the degree of depth and difficulty that dam foundation needs antiseepage to process are increasing, and present maximum basement rock seepage preventing curtain grouting has reached 171.5m, and borehole accuracy is controlled at and domesticly belongs to unprecedented, and is also rare abroad.In each large Hydropower Station Construction, it is larger that engineering quantity is processed in antiseepage, higher to the construction of anti-seepage curtain grouting requirement of strength, improves the drilling construction work efficiency when deflection meets design requirement at the bottom of guaranteeing hole, deep hole curtain hole, is the great technical barrier that industry faces.
Summary of the invention
For solving the problems of the technologies described above, the purpose of this invention is to provide a kind of deep hole curtain grouting boring hole deviation control method, design offset distance requirement at the bottom of the hole, curtain grouting hole to satisfy construction quality, and reach rapid construction, raising construction efficiency.
For achieving the above object, the technical solution used in the present invention is: a kind of deep hole curtain grouting boring hole deviation control method may further comprise the steps:
(1) spud in before, four jiaos of rig substructures adopt expansion bolt anchoring, rig belly to adopt pull bar to fix, and guarantee that rig is steady at the boring procedure middle machine body;
(2) creep into, along with the gradually increase of hole depth, hole depth adopts the jumping chisel tool to carry out the core drill hole with interior construction on boring top, guarantee the top hole depth with the internal drilling declination control the design permissible value 1/2 in;
(3) below boring top hole depth, use the three wings composite sheet instead or the diamond rock bit is not got the core full-face drilling, utilize top to bore accurate boring as leading, finish boring.
Described hole depth is at least 100 meters.
Described boring top hole depth is 2/3 of whole hole depth.
Deep hole curtain grouting boring hole deviation control method provided by the invention, by adopting the jumping chisel tool to creep on boring top, the bottom utilizes top to bore accurate boring as guiding, adopts three wings composite sheet or diamond rock bit not to get the core full-face drilling, so that offset distance is not more than 2.0m at the bottom of the drilling hole.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is technical scheme general description of construction figure of the present invention.
The specific embodiment
In the large-scale hydroelectric project of building, the maximum seepage proof curtain degree of depth of some hydropower station reaches 171.5m, and the highest construction intensity surpassed for 2 myriametre/moons, and offset distance was not more than pitch-row (2.0m) at the bottom of technical requirement on design allowed the hole.
When large deep drilling implementation process, the anchoring of four jiaos of employings of rig substructure expansion bolt, rig belly adopt pull bar to fix, and have guaranteed that rig is steady at the boring procedure middle machine body.
In the embodiment shown in fig. 1, the hole depth of deep hole curtain boring 1 is not less than 100 meters, deepen with boring, in the high 4.0m gallery in hole, select 3.0~3.5m jumping chisel tool to carry out core drill hole (configuration of jumping chisel tool is decided on cavern's height situation), and carry out hole deviation and follow the tracks of to detect, with guarantee super dark curtain grouting hole 80~100m hole depth borehole accuracy (guarantee to control the above deflection precision of 2/3 hole depth be controlled at design permissible value 1/2 in); Below hole depth 80~100m, the accurate boring conduct guiding of utilizing top to bore is used the full section fast drilling of three wings compact bit or diamond rock bit instead, has reached the purpose of rapid construction.Check and accept through boring, the designing requirement that offset distance at the bottom of the hole is no more than 2.0m can be satisfied in this project deep hole curtain grouting hole, and exceed industry standard control criterion has been guaranteed the Curtain Grouting Construction quality.

Claims (3)

1. deep hole curtain grouting boring hole deviation control method is characterized in that: may further comprise the steps:
(1) spud in before, four jiaos of rig substructures adopt expansion bolt anchoring, rig belly to adopt pull bar to fix, and guarantee that rig is steady at the boring procedure middle machine body;
(2) creep into, along with the gradually increase of hole depth, hole depth adopts the jumping chisel tool to carry out the core drill hole with interior construction on boring top, guarantee the top hole depth with the internal drilling declination control the design permissible value 1/2 in;
(3) below boring top hole depth, use the three wings composite sheet instead or the diamond rock bit is not got the core full-face drilling, utilize top to bore accurate boring as leading, finish boring.
2. deep hole curtain grouting according to claim 1 boring hole deviation control method, it is characterized in that: described hole depth is at least 100 meters.
3. a kind of deep hole curtain grouting boring hole deviation control method according to claim 1, it is characterized in that: described boring top hole depth is 2/3 of whole hole depth.
CN2012103666829A 2012-09-28 2012-09-28 Hole deviation control method for drilling in deep hole curtain grouting Pending CN102864786A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012103666829A CN102864786A (en) 2012-09-28 2012-09-28 Hole deviation control method for drilling in deep hole curtain grouting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012103666829A CN102864786A (en) 2012-09-28 2012-09-28 Hole deviation control method for drilling in deep hole curtain grouting

Publications (1)

Publication Number Publication Date
CN102864786A true CN102864786A (en) 2013-01-09

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CN (1) CN102864786A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103352687A (en) * 2013-07-12 2013-10-16 葛洲坝集团第二工程有限公司 Method controlling hole deviation in hole drilling
CN105133571A (en) * 2015-08-06 2015-12-09 中国水利水电第五工程局有限公司 Plugging type connection method for deep hole inclined curtain and vertical curtain
CN106194088A (en) * 2016-07-28 2016-12-07 北京振冲工程股份有限公司 A kind of drilling deep hole system and improve deep hole grout curtain borehole accuracy and the method for work efficiency
CN110173597A (en) * 2019-04-19 2019-08-27 东莞建晖纸业有限公司 Paper mill stock tank and white water chest Fast Installation manhole or line process

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1018281A (en) * 1996-07-03 1998-01-20 Maeda Corp Curtain grouting method
CN101638987A (en) * 2009-07-24 2010-02-03 中铁二十一局集团有限公司 Tunnel construction method for crossing high-pressure water-enriched fracture zone with curtain grouting and grout stopping wall
CN102003138A (en) * 2010-11-12 2011-04-06 潘鸿宝 Construction method for carrying out high-precision vertical drilling on concrete and drilling device thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1018281A (en) * 1996-07-03 1998-01-20 Maeda Corp Curtain grouting method
CN101638987A (en) * 2009-07-24 2010-02-03 中铁二十一局集团有限公司 Tunnel construction method for crossing high-pressure water-enriched fracture zone with curtain grouting and grout stopping wall
CN102003138A (en) * 2010-11-12 2011-04-06 潘鸿宝 Construction method for carrying out high-precision vertical drilling on concrete and drilling device thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
叶盛茂等: "全断面钻进杖术在帷幕滩浆中的应用", 《水利水电施工》, no. 111, 30 December 2008 (2008-12-30), pages 101 - 102 *
赵洪志等: "大倾角深孔帷幕的钻探灌浆施工", 《珠江现代建设》, no. 147, 28 February 2009 (2009-02-28), pages 10 - 13 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103352687A (en) * 2013-07-12 2013-10-16 葛洲坝集团第二工程有限公司 Method controlling hole deviation in hole drilling
CN103352687B (en) * 2013-07-12 2016-06-29 中国葛洲坝集团第二工程有限公司 The method of keyhole hole deviation
CN105133571A (en) * 2015-08-06 2015-12-09 中国水利水电第五工程局有限公司 Plugging type connection method for deep hole inclined curtain and vertical curtain
CN105133571B (en) * 2015-08-06 2017-07-25 中国水利水电第五工程局有限公司 A kind of deep hole tilts curtain and vertical curtain plugging type connection method
CN106194088A (en) * 2016-07-28 2016-12-07 北京振冲工程股份有限公司 A kind of drilling deep hole system and improve deep hole grout curtain borehole accuracy and the method for work efficiency
CN110173597A (en) * 2019-04-19 2019-08-27 东莞建晖纸业有限公司 Paper mill stock tank and white water chest Fast Installation manhole or line process

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Application publication date: 20130109