CN103161478A - Impulse-type grouting method - Google Patents
Impulse-type grouting method Download PDFInfo
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- CN103161478A CN103161478A CN2013100952221A CN201310095222A CN103161478A CN 103161478 A CN103161478 A CN 103161478A CN 2013100952221 A CN2013100952221 A CN 2013100952221A CN 201310095222 A CN201310095222 A CN 201310095222A CN 103161478 A CN103161478 A CN 103161478A
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Abstract
The invention discloses an impulse-type grouting method, and is applicable to general tunnel and roadway support projects. A grouting pipe with the same depth of a drilling hole is inserted into a well-constructed grouting drilling hole, the inner end of the grouting pipe contacts a hole bottom, and the outer end of the grouting pipe is connected with a grouting flexible pipe through a control valve. An impulse-type grouting system is connected on the grouting flexible pipe. A reversing valve ensures that high-pressure thick liquid and low-pressure thick liquid alternatively pass through, and therefore impulse-type grouting is achieved. As grouting time increases, the injecting speed of thick liquid is reduced, changes of a displayed value on a flow meter is observed, and when the thick liquid stops to flow, grouting is stopped. Impulse pressure is utilized to ensure that the thick liquid is provided with larger flow velocity and impact force; the width of an original cranny gap of a rock mass is enlarged, the closed cranny gap is opened, and therefore the number of channels for the thick liquid to pass through is increased, and strong permeation effect is generated; and the diffusion radius of the thick liquid is enlarged to improve filling rates of the gap.
Description
Technical field
The present invention relates to a kind of pulsed grouting method, especially a kind of be applicable to underground construction build in the pulsed grouting method of soft rock mass water blockoff and reinforcing.
Technical background
In the constructions such as underground construction such as tunnel, chamber or use procedure, run into aquifer or highland and press situation, the influenced comparatively character of weakness that shows of rock mass easily causes the situations such as surrouding rock deformation, partial collapse, threaten personnel, device security, delay normal production.Generally adopt the method for slip casting to come water blockoff, reinforce adjoining rock both at home and abroad, solve problems.Slip casting refers to utilize air pressure, hydraulic pressure or electrochemical principle; by Grouting Pipe, slurries are injected the stratum equably; slurries are with filling, infiltration and the mode such as compacted; occupy its position after driving moisture between grogs or in rock fracture and air away; after the Artificial Control certain hour; slurries are cemented to an integral body with original loose grogs or crack, form " a calculus body " that structure is new, intensity is large, water resistance is good and chemical stability is good, reach the purpose that rock mass is processed.Grouting method commonly used has permeation grouting method, fracture grouting method, press injecting method, filling and injecting slurry method etc.
The principle that grouting for water blocking is reinforced is to replace the position of rock cranny Air with slurries, and discrete rock is become an overall structure, thereby increases the character of each side.Therefore, the filling rate in rock mass is an important indicator that determines the slip casting effect quality.Permeation grouting method refers under the prerequisite that does not change the arrangement of earth formation and particle, under grouting pressure effect constant, less, slurries overcome various resistances and infiltrate hole and crack, to the grouting method of depths, stratum infiltration, it is characterized in that the less and constant pressure of pressure.In the slip casting process, thereby make slurry flow rate slow because pressure is lower, the serous granule that particle diameter is large runs into the less crack meeting of gap length very soon because resistance be blocked by the crack greater than slurries pressure in flow process, rest in this crack, along with flowing of follow-up slurries, increasing this crack of large-size particles filling until the crack stopped up fully.Although reached the purpose in filled opening space, also blocked the more short grained passage that enters rear space of planes of particle diameter, slip casting work finishes in advance.These cracks of filling are the part crack close to from Grouting Pipe just, has seldom or do not have slurries in rock mass far away, will cause like this grout spreading range little, does not reach the slip casting effect of expection.
Summary of the invention
Technical problem: the objective of the invention is to overcome the weak point in prior art, a kind of method is simple in providing, the diffusion radius that can improve slurries, the pulsed grouting method that improves slip casting effect.
Technical scheme: pulsed grouting method of the present invention, be included in the regional inlet well of arranging the working design degree of depth of wall rock grouting, clean out water and residue in the hole, further comprising the steps of:
A, insert the Grouting Pipe that equates with drilling depth in the good inlet well of construction, at the bottom of the contact hole of Grouting Pipe the inner, the outer end is connected with the slip casting flexible pipe by control valve, carries out sealing of hole with sealing of hole cement routinely;
B, connect the pulsed filling system on the slip casting flexible pipe, and in the exit of pulsed filling system, the observed volume table is set; Described pulsed filling system comprises reversal valve, be connected to high press juice loop and low press juice loop on reversal valve, high press juice loop is connected with mixer respectively with the other end in low press juice loop, be provided with successively high-pressure pump, high pressure pot for storing up liquid, high tension loop pressure meter on high press juice loop, low press juice is provided with low-lift pump, low pressure pot for storing up liquid, low tension loop pressure meter on the loop successively;
C, different high-pressure pump, the low-lift pump two cover pumping sources of starting pressure, high-pressure pump is toward the deployed slurries of high pressure pot for storing up liquid perfusion, low-lift pump pours into deployed slurries in the low pressure pot for storing up liquid, reach the pressure of setting when slurries after, alternately open high press juice loop and low press juice loop by reversal valve, slurry through being connected with Grouting Pipe is annotated flexible pipe and carry out the slip casting of pulsed transformation in boring, realizes alternately injecting of high and low pressure slurries;
D, increase with the slip casting time, the slurries injection rate slows down, and the registration of observed volume table changes, when slurries no longer flow, first closed control valve and reversal valve, then close high-pressure pump and low-lift pump, the dismounting grouting pipeline continues the next one is holed and carries out pulsed slip casting.
The grouting pressure of described high-pressure pump is 6MPa, and the grouting pressure of low-lift pump is 1.5MPa.
The described frequency that alternately starts high-pressure pump, low-lift pump two cover pumping sources is 45 times/min.
Beneficial effect: owing to having adopted technique scheme, the present invention oppresses slurries by instantaneous pressure and enters rock mass by the slip casting of pulsed transformation, under the prerequisite of not destroying the original intensity of rock mass, enlarge the rock cranny gap length, and open closed crack, increase the passage of slurry flow; By the alternately slip casting of pulsed highland pressure, can form instantaneous pressure, slurries will have larger flow velocity and impact force, have strong osmosis.Provide the stable pressure that continues by pot for storing up liquid, pulsed transformation slip casting utilization increases grouting pressure, improves slurry flow rate and impact expansion grout spreading range, improve the pack completeness in space, solve the problem that under general grouting method, range of scatter is little, pack completeness is hanged down deficiency.Simply, process easily operates, and whole step is low to construction requirement, has very strong practicality.
Description of drawings
Fig. 1 is the inner grouting pipeline schematic diagram of rock mass of the present invention;
Fig. 2 is filling system schematic diagram of the present invention.
In figure: 1-Grouting Pipe, 2-sealing of hole cement, 3-control valve, 4-slip casting flexible pipe, 5-mixer, 6-high-pressure pump, 7-low-lift pump, 8-high pressure pot for storing up liquid, 9-low pressure pot for storing up liquid, 10-high tension loop pressure meter, 11-low tension loop pressure meter, 12-reversal valve, 13-flowmeter.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are further described:
Pulsed grouting method of the present invention: concrete steps are as follows:
A. be included in the regional inlet well of arranging the working design degree of depth of wall rock grouting, clean out water and residue in the hole;
B. insert the Grouting Pipe 1 that equates with drilling depth in the good inlet well of construction, at the bottom of the inner contact hole of Grouting Pipe 1, the outer end is connected with slip casting flexible pipe 4 by control valve 3, carries out sealing of hole with sealing of hole cement 2 routinely;
C. connect the pulsed filling system on slip casting flexible pipe 4, and in the exit of pulsed filling system, flowmeter 13 is set; Described pulsed filling system comprises reversal valve 12, be connected to high press juice loop and low press juice loop on reversal valve 12, high press juice loop is connected with mixer 5 respectively with the other end in low press juice loop, be provided with successively high-pressure pump 6, high pressure pot for storing up liquid 8, high tension loop pressure meter 10 on high press juice loop, low press juice is provided with low-lift pump 7, low pressure pot for storing up liquid 9, low tension loop pressure meter 11 on the loop successively;
D. different 7 liang of cover pumping sources of high-pressure pump 6, low-lift pump of starting pressure, high-pressure pump 6 is toward the high pressure pot for storing up liquid 8 deployed slurries of perfusion, low-lift pump 7 pours into deployed slurries in low pressure pot for storing up liquid 9, reach the pressure of setting when slurries after, alternately open high press juice loop and low press juice loop by reversal valve 12, slurry through being connected with Grouting Pipe 1 is annotated flexible pipe 4 and carry out the slip casting of pulsed transformation in boring, realizes alternately injecting of high and low pressure slurries; The grouting pressure of described high-pressure pump is 6MPa, and the grouting pressure of low-lift pump is 1.5MPa; The described frequency that alternately starts high-pressure pump 6,7 liang of cover pumping sources of low-lift pump is 45 times/min.
E. increase with the slip casting time, the slurries injection rate slows down, and the registration of observed volume table 13 changes, when slurries no longer flow, first closed control valve 3 and reversal valve 12, then close high-pressure pump 6 and low-lift pump 7, the dismounting grouting pipeline continues the next one is holed and carries out pulsed slip casting.
Claims (3)
1. pulsed grouting method is included in the wall rock grouting zone by the design parameters inlet well of constructing, and cleans out water and residue in the hole, it is characterized in that, and is further comprising the steps of:
A, insert the Grouting Pipe (1) that equates with drilling depth in the good inlet well of construction, at the bottom of the inner contact hole of Grouting Pipe (1), the outer end is passed through control valve (3) and is connected with slip casting flexible pipe (4), uses routinely sealing of hole cement (2) to carry out sealing of hole;
B, connect the pulsed filling system slip casting flexible pipe (4) is upper, and flowmeter (13) is set in the exit of pulsed filling system; Described pulsed filling system comprises reversal valve (12), be connected to high press juice loop and low press juice loop on reversal valve (12), high press juice loop is connected with mixer (5) respectively with the other end in low press juice loop, be provided with successively high-pressure pump (6), high pressure pot for storing up liquid (8), high tension loop pressure meter (10) on high press juice loop, low press juice is provided with low-lift pump (7), low pressure pot for storing up liquid (9), low tension loop pressure meter (11) on the loop successively;
C, different high-pressure pump (6), low-lift pump (7) the two cover pumping sources of starting pressure, high-pressure pump (6) is toward the deployed slurries of high pressure pot for storing up liquid (8) perfusion, low-lift pump (7) pours into deployed slurries in low pressure pot for storing up liquid (9), reach the pressure of setting when slurries after, alternately open high press juice loop and low press juice loop by reversal valve (12), slurry through being connected with Grouting Pipe (1) is annotated flexible pipe (4) and carry out the slip casting of pulsed transformation in boring, realizes alternately injecting of high and low pressure slurries;
D, increase with the slip casting time, the slurries injection rate slows down, the registration of observed volume table (13) changes, when slurries no longer flow, first closed control valve (3) and reversal valve (12), close high-pressure pump (6) and low-lift pump (7), the dismounting grouting pipeline continues the next one is holed and carries out pulsed slip casting again.
2. described a kind of pulsed grouting method according to claim 1, it is characterized in that: the grouting pressure of described high-pressure pump is 6MPa, the grouting pressure of low-lift pump is 1.5MPa.
3. described a kind of pulsed grouting method according to claim 1 is characterized in that: the described frequency that alternately starts high-pressure pump (6), low-lift pump (7) two cover pumping sources is 45 times/min.
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| CN201310095222.1A CN103161478B (en) | 2013-03-25 | 2013-03-25 | Impulse-type grouting method |
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| CN201310095222.1A CN103161478B (en) | 2013-03-25 | 2013-03-25 | Impulse-type grouting method |
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| CN103161478A true CN103161478A (en) | 2013-06-19 |
| CN103161478B CN103161478B (en) | 2015-05-20 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481452A (en) * | 2014-12-05 | 2015-04-01 | 中国矿业大学 | Method for sealing holes drilled through variable-frequency impulse grouting drilling |
| CN107218078A (en) * | 2017-07-25 | 2017-09-29 | 福建永强岩土股份有限公司 | Filled for underground coal goaf and abandoned workings, the new technology of grouting filling |
| CN107366542A (en) * | 2016-05-13 | 2017-11-21 | 朱世阳 | A kind of grouting method for having been equipped with pit shaft |
| CN108952760A (en) * | 2018-06-27 | 2018-12-07 | 中国矿业大学 | A kind of intelligent circulation increasing-pressure-releasing type dynamic grouting system and method |
| CN109667390A (en) * | 2019-01-14 | 2019-04-23 | 广州建筑产业研究院有限公司 | A kind of transformation grouting pump and grouting method |
| CN110374639A (en) * | 2019-08-02 | 2019-10-25 | 中煤第三建设（集团）有限责任公司 | Cereal injection device and cereal method for implanting |
| CN110700236A (en) * | 2019-10-25 | 2020-01-17 | 湖北理工学院 | Novel high-low pressure composite grouting construction process |
| CN112593976A (en) * | 2020-11-11 | 2021-04-02 | 永城煤电控股集团有限公司 | Coal mine geology is slip casting device for water shutoff |
| CN113008610A (en) * | 2021-03-02 | 2021-06-22 | 济南瑞环设备有限公司 | Nondestructive sampling construction process flow for soil |
| CN115467332A (en) * | 2022-08-23 | 2022-12-13 | 中煤第五建设有限公司 | Sand layer grouting device and grouting method thereof |
| CN115559687A (en) * | 2022-10-20 | 2023-01-03 | 中国矿业大学(北京) | Pulse type grouting hole sealing device and hole sealing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104481452A (en) * | 2014-12-05 | 2015-04-01 | 中国矿业大学 | Method for sealing holes drilled through variable-frequency impulse grouting drilling |
| CN107366542A (en) * | 2016-05-13 | 2017-11-21 | 朱世阳 | A kind of grouting method for having been equipped with pit shaft |
| CN107218078B (en) * | 2017-07-25 | 2019-03-19 | 福建永强岩土股份有限公司 | It is filled for underground coal goaf and abandoned workings, the new technology of grouting filling |
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| CN108952760B (en) * | 2018-06-27 | 2020-02-07 | 中国矿业大学 | Intelligent circulating pressure increasing-discharging type dynamic grouting system and method |
| CN108952760A (en) * | 2018-06-27 | 2018-12-07 | 中国矿业大学 | A kind of intelligent circulation increasing-pressure-releasing type dynamic grouting system and method |
| CN109667390A (en) * | 2019-01-14 | 2019-04-23 | 广州建筑产业研究院有限公司 | A kind of transformation grouting pump and grouting method |
| CN110374639A (en) * | 2019-08-02 | 2019-10-25 | 中煤第三建设（集团）有限责任公司 | Cereal injection device and cereal method for implanting |
| CN110374639B (en) * | 2019-08-02 | 2021-06-01 | 中煤第三建设（集团）有限责任公司 | Grain injection device and grain injection method |
| CN110700236A (en) * | 2019-10-25 | 2020-01-17 | 湖北理工学院 | Novel high-low pressure composite grouting construction process |
| CN112593976A (en) * | 2020-11-11 | 2021-04-02 | 永城煤电控股集团有限公司 | Coal mine geology is slip casting device for water shutoff |
| CN112593976B (en) * | 2020-11-11 | 2022-12-02 | 永城煤电控股集团有限公司 | Coal mine geology is slip casting device for water shutoff |
| CN113008610A (en) * | 2021-03-02 | 2021-06-22 | 济南瑞环设备有限公司 | Nondestructive sampling construction process flow for soil |
| CN115467332A (en) * | 2022-08-23 | 2022-12-13 | 中煤第五建设有限公司 | Sand layer grouting device and grouting method thereof |
| CN115467332B (en) * | 2022-08-23 | 2023-09-12 | 中煤第五建设有限公司 | Sand layer grouting device and grouting method thereof |
| CN115559687A (en) * | 2022-10-20 | 2023-01-03 | 中国矿业大学(北京) | Pulse type grouting hole sealing device and hole sealing method |
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| CN103161478B (en) | 2015-05-20 |
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