CN103485716B - Karst-geology rotary-drill guide-hole construction method - Google Patents
Karst-geology rotary-drill guide-hole construction method Download PDFInfo
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- CN103485716B CN103485716B CN201310446002.9A CN201310446002A CN103485716B CN 103485716 B CN103485716 B CN 103485716B CN 201310446002 A CN201310446002 A CN 201310446002A CN 103485716 B CN103485716 B CN 103485716B
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Abstract
The invention relates to a Karst-geology rotary-drill guide-hole construction method. The Karst-geology rotary-drill guide-hole construction method is characterized in that a specific progress includes: before hole-by-hole drilling, performing geological drilling first to obtain a geological column graph; according to prompt of the geological column graph, distinguishing normal driving and guide-hole construction method, and drilling according to a designed hole diameter under the normal drilling condition; designing safe thickness on the upper side of a Karst cave opening, and designing the safe thickness with the safe distance aiming at preventing collapse of sections according to geology; switching to a drilling bucket small in diameter to drill in a guide hole drilling area; lifting a drilling tool, observing mud loss in a pile and mud filled in the cave and judging size of a cavity of the Karst cave after drilling of the guide hole penetrating a crustal layer to enter the Karst cave; according to the size of the Karst cave, adopting different processing methods. The method is simple and effect in exploration technology, a geological structure can be grasped rapidly, safety during an exploration process can be guaranteed, and accordingly double benefits can be achieved.
Description
Technical field
The present invention relates to a kind of Karst-geology rotary-drill guide-hole construction method, be applied to the employing of Karst Geological Landscape section and dig drilling machine construction bored pile.
Background technology
Existing Karst Geological Landscape carries out in exploration process, mainly utilize the single larger-diameter drill bit of ratio to spud in, when solution cavity situation is unknown, major diameter drill bit is when creeping into solution cavity, the security incident such as easily cause that solution cavity caves in, brings great potential safety hazard to exploration process.Therefore, are objects that the present invention studies for the problems referred to above.
Summary of the invention
The object of the present invention is to provide a kind of Karst-geology rotary-drill guide-hole construction method, contribute to solving in current solution cavity exploration process and there is the problems such as very big potential safety hazard.
The invention is characterized in: a kind of Karst-geology rotary-drill guide-hole construction method, is characterized in that, specifically carry out according to the following procedure:
1) before hole-specifically creeping into, first carry out geotechnical boring, draw geologic column;
2) according to the prompting of geologic column, normal driving and guide hole construction method are distinguished, under normal driving state, carry out churning driven by design aperture and creep into;
3) design safety thickness above the solution cavity mouth of prompting, its safe distance caves in for target to prevent its fragment according to geology, design safety thickness;
4) at guide hole drilling area, use minor diameter drilling bucket instead and creep into;
5) after guide hole creeps into, can crust layer be passed, enter solution cavity, now promote drilling tool, observe the damaed cordition of mud in stake, fill up the mud situation in hole, judge the size in the cavity of solution cavity;
According to the size of solution cavity, take different processing methods.
Advantage of the present invention: the present invention explores that technique is simple, effectively, can not only understand geologic structure fast, and can also ensure the safety of exploration process, be kill two birds with one stone.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment of the present invention process.
Detailed description of the invention
With reference to figure 1, the present invention relates to a kind of Karst-geology rotary-drill guide-hole construction method, specifically carry out according to the following procedure:
1) before hole-specifically creeping into, first carry out geotechnical boring, draw geologic column;
2) according to the prompting of geologic column, normal driving and guide hole construction method are distinguished, under normal driving state, carry out churning driven by design aperture and creep into;
3) design safety thickness above the solution cavity mouth of prompting, its safe distance caves in for target to prevent its fragment according to geology, design safety thickness;
4) at guide hole drilling area, use minor diameter drilling bucket instead and creep into;
5) after guide hole creeps into, can crust layer be passed, enter solution cavity, now promote drilling tool, observe the damaed cordition of mud in stake, fill up the mud situation in hole, judge the size in the cavity of solution cavity;
6) according to the size of solution cavity, different processing methods is taked.
Specific implementation process is as follows:
1, before hole-specifically creeping into, first carry out geotechnical boring, draw geologic column;
2, according to the prompting of geologic column, normal driving and guide hole construction method are distinguished, under normal driving state, carry out churning driven by design aperture and creep into, normally creep into district 1 as illustrated;
3, certain safe distance (safe distance according to geology, to prevent its fragment from caving in for target, design safety thickness) above the solution cavity mouth of prompting, as illustrated reserved anti-collapse height 2;
4, at guide hole drilling area, use minor diameter drilling bucket instead and creep into, as figure guide hole creeps into 3;
5, after guide hole creeps into, can crust layer be passed, enter solution cavity, now promote drilling tool, observe the damaed cordition of mud in stake, fill up the mud situation in hole, judge the size in the cavity of solution cavity;
6, according to the size of solution cavity, different processing methods is taked.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (1)
1. a Karst-geology rotary-drill guide-hole construction method, is characterized in that, specifically carries out according to the following procedure:
1) before hole-specifically creeping into, first carry out geotechnical boring, draw geologic column;
2) according to the prompting of geologic column, normal driving and guide hole construction method are distinguished, under normal driving state, carry out churning driven by design aperture and creep into;
3) design safety thickness above the solution cavity mouth of prompting, its safe distance caves in for target to prevent its fragment according to geology, design safety thickness;
4) at guide hole drilling area, use minor diameter drilling bucket instead and creep into;
5) after guide hole creeps into, can crust layer be passed, enter solution cavity, now promote drilling tool, observe the damaed cordition of mud in stake, fill up the mud situation in hole, judge the size in the cavity of solution cavity;
6) according to the size of solution cavity, different processing methods is taked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310446002.9A CN103485716B (en) | 2013-09-27 | 2013-09-27 | Karst-geology rotary-drill guide-hole construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310446002.9A CN103485716B (en) | 2013-09-27 | 2013-09-27 | Karst-geology rotary-drill guide-hole construction method |
Publications (2)
| Publication Number | Publication Date |
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| CN103485716A CN103485716A (en) | 2014-01-01 |
| CN103485716B true CN103485716B (en) | 2015-06-10 |
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| CN201310446002.9A Active CN103485716B (en) | 2013-09-27 | 2013-09-27 | Karst-geology rotary-drill guide-hole construction method |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153352B (en) * | 2014-07-31 | 2017-02-15 | 广西科技大学 | Karst geology rotary-drilling bored concrete pile hole forming process |
| CN104809312B (en) * | 2015-05-15 | 2017-12-05 | 中铁第四勘察设计院集团有限公司 | Pile In Karst Area supporting course safe thickness computational methods |
| CN105064985B (en) * | 2015-07-20 | 2018-02-16 | 中铁十七局集团第四工程有限公司 | The decision method for carrying out the dynamic adjustment of vertical shaft drilling process is analyzed based on slag charge |
| CN108411928A (en) * | 2018-03-22 | 2018-08-17 | 中建桥梁有限公司 | One kind passing through multilayer karst cave ultra-deep and large diameter pile foundation boring method |
| CN113981958A (en) * | 2021-11-26 | 2022-01-28 | 中铁十六局集团第四工程有限公司 | Method for plugging karst cave of mechanical pore-forming cast-in-place pile |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2215109C2 (en) * | 2001-11-05 | 2003-10-27 | Иркутский государственный технический университет | Method of well rotary drilling |
| CN102536250B (en) * | 2010-12-31 | 2014-10-08 | 中铁二局股份有限公司 | Construction method for tunnels with karst and gas simultaneously |
| CN102322294B (en) * | 2011-05-31 | 2014-06-18 | 中铁二十局集团第一工程有限公司 | Comprehensive geological prediction method for karst tunnel construction |
| CN102817619B (en) * | 2012-09-03 | 2014-12-10 | 中铁第四勘察设计院集团有限公司 | Combined advanced drilling exploration method for detecting water-free dissolving cavity and water dissolving cavity in tunnel |
| CN102888795A (en) * | 2012-10-25 | 2013-01-23 | 中铁十九局集团有限公司 | Karst roadbed grouting process |
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