CN105019458A - Deep and thick sand layer covered karst cave grouting system device and construction method - Google Patents
Deep and thick sand layer covered karst cave grouting system device and construction method Download PDFInfo
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- CN105019458A CN105019458A CN201510455609.2A CN201510455609A CN105019458A CN 105019458 A CN105019458 A CN 105019458A CN 201510455609 A CN201510455609 A CN 201510455609A CN 105019458 A CN105019458 A CN 105019458A
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Abstract
The invention discloses a deep and thick sand layer covered karst cave grouting system device and grouting construction method. According to the system device, a cement tank (1), a slurrymaking system (2) and a grouting machine (9) are connected through slurry inlet pipelines (3), and are connected with a slurry recovery system through slurry return pipelines (7); a grouting system comprises a grouting recorder (5) and a slurry stop plug (6), the grouting recorder (5) is connected with flowmeters (4) and a pressure meter (11), the slurry stop plug (6) is placed on a top plate of a karst cave (8), and a grouting needle pipe is arranged in the slurry stop plug (6). The grouting construction method comprises the steps that 1, the cement tank, the slurrymaking system and the slurry recovery system are mounted; 2, drilling construction is carried out on an outer sleeve pipe till the outer sleeve pipe is close to a bed rock face as much as possible; 3, an inner steel sleeve pipe drills into bed rock by at least 0.5 m; 4, the bed rock is drilled to design depth; 5, the grouting system is mounted; and 6, cement slurry is pressed into the karst cave, grouting is stopped after the final slurry standard is met, and hole sealing is carried out.
Description
Technical field
The present invention relates to solution cavity mortar depositing construction equipment and grouting construction method under a kind of sand seam geology condition.
Background technology
At present, drilling rod is extracted the construction technology of the once slip casting of property plastic pipe, sealing of hole after Karst area slip casting adopts the direct slip casting of drilling rod or pore-forming usually.But, under karst limestone directly covers the geological conditions of deep and thick sand, layer of sand can be communicated with solution cavity after using the method pore-forming, after extracting drilling rod, upper strata sandstone will be followed drilled tunnel and be entered solution cavity, entering slurry, return a series of construction parameter such as slurry, pressure, index etc. to determine whether to reach whole slurry standard in work progress cannot be monitored in slip casting process simultaneously, cannot judge whether solution cavity is effectively filled, easy generation karst collapse, cause personnel, property loss, even cause great social influence.
Therefore, occur for avoiding the problems referred to above, be necessary to be optimized filling system and construction technology on traditional construction basis, a kind of deep and thick sand is provided to cover lower Karst grouting system and construction method, the method not only avoid sandstone leakage, solve the problems such as grouting amount is not enough and excessive simultaneously, eliminate traditional handicraft and to construct in this stratum the risk of existence.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of deep and thick sand to cover lower solution cavity filling system equipment and construction method, to avoid, sandstone runs off, grouting amount is not enough and excessive, overcomes the deficiency that prior art exists.
Deep and thick sand of the present invention covers lower solution cavity filling system equipment: cementing tank, pulping system and slurry filling machine are connected by inlet pipe road, connect mud veclamation system by overfall pipeline; Grouting system comprises grouting automatic recorder and stop grouting plug, wherein grouting automatic recorder connection traffic meter and pressure gauge respectively, and stop grouting plug puts into Upper Plate of Karst Cave place, containing grouting needle tubing in stop grouting plug.
Flow meter is separately positioned on grouting pipeline and overfall pipeline.
Pressure gauge is arranged on overfall pipeline.
Deep and thick sand of the present invention covers lower Karst grouting construction method, comprises the following steps: the first step, installs cementing tank, pulping system and mud veclamation system; Second step, outer tube drilling construction is extremely as far as possible near bedrock surface; 3rd step, interior steel sleeve creeps into and be not less than 0.5m to basement rock; 4th step, basement rock internal drilling is to projected depth; 5th step, installs grouting system, comprises slurry filling machine, inlet pipe road, flow meter, grouting automatic recorder, stop grouting plug, overfall pipeline, pressure gauge; Stop grouting plug transfers to Upper Plate of Karst Cave position, and stop grouting plug grouting needle tubing inserts in solution cavity, and hold pipeline, in stop grouting plug, water filling is suppressed, and stop grouting plug is expanded, and is fixed in Upper Plate of Karst Cave; 6th step, starts slurry filling machine and grouting automatic recorder, cement grout force feed is entered solution cavity, grouting pressure 0.3-0.5Mpa, stops grouting, sealing of hole after reaching whole slurry standard.
The invention has the beneficial effects as follows: (1) with after pipe to rock stratum, avoids sandstone miss with tube apparatus, traditional handicraft can be eliminated and to construct in this stratum the risk of existence; (2) control into slurry by grouting automatic recorder+stop grouting plug, return a series of construction parameter and the indexs such as slurry, pressure, solution cavity is effectively filled, avoids subsiding; (3) avoid slurries excessive, while increasing grooving difficulty, cause waste; (4) can effectively solve in solution cavity, passage cannot fill up between solution cavity problem.
Accompanying drawing explanation
Accompanying drawing 1 is filling system equipment connection schematic diagram of the present invention;
Accompanying drawing 2 is construction flow chart of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, cementing tank 1, pulping system 2 are connected by inlet pipe road 3 with slurry filling machine 9 filling system equipment connection of the present invention, connect mud veclamation system by overfall pipeline 7; Grouting system comprises grouting automatic recorder 5 and stop grouting plug 6, wherein grouting automatic recorder 5 connection traffic meter 4 and pressure gauge 11 respectively, and stop grouting plug 6 puts into solution cavity 8 top board place, containing grouting needle tubing in stop grouting plug 6.
Flow meter 4 is separately positioned on grouting pipeline and overfall pipeline.
Pressure gauge 11 is arranged on overfall pipeline.
Deep and thick sand of the present invention covers lower Karst grouting construction method, as schematically shown in Figure 2, comprises the following steps: the first step: install cementing tank 1, pulping system 2 and mud veclamation system 10; Second step: outer tube (pvc pipe) drilling construction is extremely as far as possible near bedrock surface; 3rd step: interior steel sleeve creeps into and be not less than 0.5m to basement rock; 4th step: basement rock internal drilling is to projected depth; 5th step: install grouting system, comprise slurry filling machine, inlet pipe road 3, flow meter 4, grouting automatic recorder 5, stop grouting plug 6, overfall pipeline 7, pressure gauge 11; Stop grouting plug 6 transfers to solution cavity 8 ceiling location, and stop grouting plug 6 is in the milk in needle tubing insertion solution cavity 8, and hold pipeline, in stop grouting plug 6, water filling is suppressed, and stop grouting plug 6 is expanded, and is fixed on solution cavity 8 top board.6th step: start slurry filling machine 9 and grouting automatic recorder 5, cement grout force feed is entered solution cavity 8, stops grouting, sealing of hole after reaching whole slurry standard.
In above-mentioned construction, at the bottom of ground-connecting-wall wall or bored grouting at the bottom of stake, adopt job-hopping formula cloth hole.
Adopt rig drilling rod is beaten to below ground 28m, drilling rod is extracted rear under enter outer tube (pvc pipe).Enter as far as possible near bedrock surface under outer tube (pvc pipe), prevent steel sleeve from embracing, adopt rig to be beaten by steel sleeve within the outer tube and be not less than 0.5m to bedrock surface, steel sleeve is retained in basement rock.
In steel sleeve, 1m under 15m(or karst cave in bottom to be beaten to bedrock surface by drilling rod by continuation rig), drilling rod is extracted.
In hole, slip casting stop grouting plug is installed: 1) segmented grouting: stop grouting plug is entered under bore position about 2m above bottommost solution cavity and carry out karst cave grouting; 2) complete opening once grouting: between probing solution cavity out, rock stratum is less than 2m, then directly under be in the milk at the position of depth of stratum more than 2m.
Scene arranges to concentrate mixes slurry system, and slurry amount mixed by homogenizer is at every turn 0.4m
3, mixing time is greater than 30s, mixes slurry and adopts 1:1,0.8:1,0.6:1 tri-kinds of slurries, wherein slurries mixing 1.2 m of 1:1
3; Slurry configurations 1.2 m of 0.8:1
3; Slurries all afterwards all adopt 0.6:1.
Grouting flow instrument record slip casting: be communicated with Grouting Pipe, grouting pipe and flow instrument connected, start grouting, grouting all completes, and extracts stop grouting plug, extracts steel sleeve.1) segmented grouting: after karst cave in bottom grouting slurry completes, stop grouting plug is carried and continues to be in the milk to top solution cavity; 2) complete opening once grouting: without the need on carry stop grouting plug, be directly in the milk sealing of hole behind whole hole.
Claims (8)
1. deep and thick sand covers a lower solution cavity filling system equipment, and it is characterized in that, cementing tank (1), pulping system (2) and slurry filling machine (9) are connected by inlet pipe road (3), connect mud veclamation system by overfall pipeline (7); Grouting system comprises grouting automatic recorder (5) and stop grouting plug (6), wherein grouting automatic recorder (5) connection traffic meter (4) and pressure gauge (11) respectively, and stop grouting plug (6) puts into solution cavity (8) top board place, containing grouting needle tubing in stop grouting plug (6).
2. deep and thick sand according to claim 1 covers lower solution cavity filling system equipment, and it is characterized in that, flow meter (4) is separately positioned on grouting pipeline and overfall pipeline.
3. deep and thick sand according to claim 1 covers lower solution cavity filling system equipment, and it is characterized in that, pressure gauge (11) is arranged on overfall pipeline.
4. deep and thick sand covers a lower solution cavity grouting construction method, it is characterized in that, comprises the following steps: the first step, install cementing tank (1), pulping system (2) and mud veclamation system (10); Second step, outer tube drilling construction is extremely as far as possible near bedrock surface; 3rd step, interior steel sleeve creeps into and be not less than 0.5m to basement rock; 4th step, basement rock internal drilling is to projected depth; 5th step, installs grouting system, comprises slurry filling machine (9), inlet pipe road (3), flow meter (4), grouting automatic recorder (5), stop grouting plug (6), overfall pipeline (7), pressure gauge (11); Stop grouting plug (6) transfers to solution cavity (8) ceiling location, stop grouting plug (6) grouting needle tubing inserts in solution cavity (8), hold pipeline, suppress toward stop grouting plug (6) interior water filling, stop grouting plug (6) is expanded, is fixed on solution cavity (8) top board; 6th step, starts slurry filling machine (9) and grouting automatic recorder (5), cement grout force feed is entered solution cavity (8), grouting pressure 0.3-0.5Mpa, stops grouting, sealing of hole after reaching whole slurry standard.
5. deep and thick sand according to claim 4 covers lower solution cavity grouting construction method, it is characterized in that, described grouting water/binder ratio adopts 1:1,0.8:1,0.6:1 to become slurry step by step, the slurries mixing 1.2m of 1:1
3; Slurry configurations 1.2 m of 0.8:1
3; Slurries all afterwards all adopt 0.6:1.
6. deep and thick sand according to claim 4 covers lower solution cavity grouting construction method, and it is characterized in that, described grouting pressure takes meter pressure to control, and meter pressure controls at 0.5Mpa.
7. deep and thick sand according to claim 4 covers lower solution cavity grouting construction method, and it is characterized in that, the described standard of starching at end is: under 0.5Mpa pressure, when grout hole section injection rate is not more than 1.0L/min, terminates cementing operations after continuing perfusion 30min; Or adjacent hole has underflow liquid to return out, terminate cementing operations; Or when stop grouting plug pressure reaches more than 10MPa, still have underflow liquid to return out from injected hole sleeve pipe is inside and outside, terminate cementing operations.
8. deep and thick sand according to claim 4 covers lower solution cavity grouting construction method, and it is characterized in that, described drilling depth is below basement rock 10 ~ 15m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510455609.2A CN105019458A (en) | 2015-07-30 | 2015-07-30 | Deep and thick sand layer covered karst cave grouting system device and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510455609.2A CN105019458A (en) | 2015-07-30 | 2015-07-30 | Deep and thick sand layer covered karst cave grouting system device and construction method |
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| CN105019458A true CN105019458A (en) | 2015-11-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130602A (en) * | 2017-06-15 | 2017-09-05 | 中铁大桥局集团有限公司 | Mud jacking system and mud jacking method |
| CN108411885A (en) * | 2018-04-09 | 2018-08-17 | 中铁二局集团有限公司 | A kind of basement rock overlying sandy soil karst treatment construction method |
| CN113216142A (en) * | 2021-05-08 | 2021-08-06 | 中铁十一局集团有限公司 | Grouting treatment method and system for underwater karst cave in karst development area |
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| NO812030L (en) * | 1980-06-17 | 1981-12-18 | Mcalpine & Sons Ltd Sir Robert | UNDERWATER-FILLING DEVICE. |
| CN101260672A (en) * | 2008-03-27 | 2008-09-10 | 中南大学 | Grouting method for rocky slope with weak surface and anchor pipe used for grouting |
| CN102011407A (en) * | 2010-08-31 | 2011-04-13 | 中国电力工程顾问集团中南电力设计院 | Method for repeated grouting of anchor foundation full section of power transmission line tower site group |
| CN204174624U (en) * | 2014-09-17 | 2015-02-25 | 中国水利水电第七工程局有限公司 | Portable abnormal concrete intelligent high-pressure filling system |
| CN104532821A (en) * | 2014-10-29 | 2015-04-22 | 中铁三局集团有限公司 | Extra-large karst cave bottom treatment construction method |
| CN104612715A (en) * | 2015-01-26 | 2015-05-13 | 湖北中南勘察基础工程有限公司 | Mine grouting technology and device with slurry stopping in hole |
| CN104762970A (en) * | 2015-04-28 | 2015-07-08 | 中铁五局（集团）有限公司 | Auxiliary tube drawing device for deep hole karst grouting and construction method thereof |
| CN204825909U (en) * | 2015-07-30 | 2015-12-02 | 中铁五局（集团）有限公司 | Deep sand bed covers solution cavity slip casting system device down |
-
2015
- 2015-07-30 CN CN201510455609.2A patent/CN105019458A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO812030L (en) * | 1980-06-17 | 1981-12-18 | Mcalpine & Sons Ltd Sir Robert | UNDERWATER-FILLING DEVICE. |
| CN101260672A (en) * | 2008-03-27 | 2008-09-10 | 中南大学 | Grouting method for rocky slope with weak surface and anchor pipe used for grouting |
| CN102011407A (en) * | 2010-08-31 | 2011-04-13 | 中国电力工程顾问集团中南电力设计院 | Method for repeated grouting of anchor foundation full section of power transmission line tower site group |
| CN204174624U (en) * | 2014-09-17 | 2015-02-25 | 中国水利水电第七工程局有限公司 | Portable abnormal concrete intelligent high-pressure filling system |
| CN104532821A (en) * | 2014-10-29 | 2015-04-22 | 中铁三局集团有限公司 | Extra-large karst cave bottom treatment construction method |
| CN104612715A (en) * | 2015-01-26 | 2015-05-13 | 湖北中南勘察基础工程有限公司 | Mine grouting technology and device with slurry stopping in hole |
| CN104762970A (en) * | 2015-04-28 | 2015-07-08 | 中铁五局（集团）有限公司 | Auxiliary tube drawing device for deep hole karst grouting and construction method thereof |
| CN204825909U (en) * | 2015-07-30 | 2015-12-02 | 中铁五局（集团）有限公司 | Deep sand bed covers solution cavity slip casting system device down |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130602A (en) * | 2017-06-15 | 2017-09-05 | 中铁大桥局集团有限公司 | Mud jacking system and mud jacking method |
| CN108411885A (en) * | 2018-04-09 | 2018-08-17 | 中铁二局集团有限公司 | A kind of basement rock overlying sandy soil karst treatment construction method |
| CN113216142A (en) * | 2021-05-08 | 2021-08-06 | 中铁十一局集团有限公司 | Grouting treatment method and system for underwater karst cave in karst development area |
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Application publication date: 20151104 |
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