CN202560157U - Grouting device - Google Patents

Grouting device Download PDF

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Publication number
CN202560157U
CN202560157U CN2012201869928U CN201220186992U CN202560157U CN 202560157 U CN202560157 U CN 202560157U CN 2012201869928 U CN2012201869928 U CN 2012201869928U CN 201220186992 U CN201220186992 U CN 201220186992U CN 202560157 U CN202560157 U CN 202560157U
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CN
China
Prior art keywords
grouting
hole
sealing
plug
pipe
Prior art date
Application number
CN2012201869928U
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Chinese (zh)
Inventor
马怀加
刘林
童碧
朱学全
徐守兵
李宝
刘涛
李忠虎
Original Assignee
淮南矿业(集团)有限责任公司
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Application filed by 淮南矿业(集团)有限责任公司 filed Critical 淮南矿业(集团)有限责任公司
Priority to CN2012201869928U priority Critical patent/CN202560157U/en
Application granted granted Critical
Publication of CN202560157U publication Critical patent/CN202560157U/en

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Abstract

The utility model provides a grouting device which comprises a hole sealing bushing, a grouting pipe and a grouting pump, wherein the hole sealing bushing is used for being inserted into an extraction hole for extracting gas, a clearance is reserved between the inner wall of the extraction hole and one end, which is close to a coal wall, of the hole sealing bushing and the clearance is plugged by a first plug; the grouting pipe penetrates through the first plug to extend into the extraction hole; and the grout output end of the grouting pump is connected with the grouting pipe and used for extracting the grout in the extraction hole through the grouting pipe. The grouting device provided by the utility model grouts for a plurality of times, contraction joints phenomena caused by hole sealing cement slurry solidification is obviously reduced, and the cement slurry contraction joints and peripheral surrounding rock cracks of a drill hole are effectively plugged.

Description

Grouting device
Technical field
The utility model relates to the hole sealing technology in the gas pumping process, relates in particular to a kind of grouting device.
Background technology
Gas control under the mine has become an important topic in production and the disaster prevention at present, and gas control the most effectively means is gas drainage under suction, and the sealing of hole leakproofness of gas drainage under suction effect and extraction borehole is closely related.
Traditional hole-sealing technology mainly contains following three kinds:
1, band is pressed disposable slip casting method: the weight ratio of this method cement and water is 1: 1, and the polyester shutoff is used at sealing of hole section two ends, and band is pressed slip casting.Through test, hole pumping and mining concentration still difficulty reaches predetermined requirement, and the concentration decay is very fast.It is former because cement grout solidifies meeting generation shrinkage joint, causes gas leak phenomenon.This technology sealing of hole success rate is low, and the decay of boring concentration is fast; In case the sealing of hole failure needs perforations adding again, increases workload.
2, borehole circumference slip casting method: on the basis of method one, wall-rock crack is carried out spray in borehole circumference.This method DeGrain, and workload is big, consumptive material is many, when implementation process is also found to meet zone of fracture, because cement grout with pressure is to the boring direction migration, annotates real boring easily.
3, the capsule band is pressed slip casting method: utilize capsule slip casting, the certain pressure cement paste makes capsule enrich expansion, pressurizes the capsule pressure-relief valve is opened to the slip casting of sealing of hole section.This method basic principle is identical with method one, and except having the defective identical with method one, this device is disposable use, has increased the sealing of hole cost.
The utility model content
The utility model provides a kind of grouting device, and to solve defective of the prior art, effectively shutoff cement paste shrinkage joint and borehole circumference wall-rock crack improve the gas pumping effect.
The utility model provides a kind of grouting device, wherein, comprising:
The sealing of hole sleeve pipe is used for being inserted into the extraction hole and carries out gas pumping, and said sealing of hole sleeve pipe carries out shutoff near an end of rib and the gap between the inwall of said extraction hole through first plug;
Grouting Pipe, said Grouting Pipe are passed said first plug and are stretched in the said extraction hole;
Grouting pump, the slurries output of said grouting pump links to each other with said Grouting Pipe, is used in said extraction hole, injecting slurries through said Grouting Pipe.
Aforesaid grouting device, wherein, preferably:
Said sealing of hole sleeve pipe carries out shutoff away from an end of rib and the gap between the inwall of said extraction hole through second plug;
Said grouting device also comprises slurry recovering tube, and said slurry recovering tube passes said first plug and stretches in the said extraction hole.
Aforesaid grouting device, wherein, preferably: said slurry recovering tube is higher than said Grouting Pipe setting.
Aforesaid grouting device, wherein, preferably: said sealing of hole sleeve pipe is connected with floral tube away from an end of rib.
Aforesaid grouting device, wherein, preferably: be provided with gate valve on said Grouting Pipe and the said slurry recovering tube.
Aforesaid grouting device, wherein, preferably: said first plug and second plug are polyurethane.
The grouting device that the utility model provides has obviously reduced the sealing of hole cement paste and has solidified the phenomenon that produces shrinkage joint through repeatedly slip casting, effectively shutoff cement paste shrinkage joint and borehole circumference wall-rock crack.
Description of drawings
The grouting method flow chart that Fig. 1 provides for the utility model embodiment one.
The grouting method flow chart that Fig. 2 provides for the utility model embodiment two.
The grouting device structural representation that Fig. 3 provides for the utility model embodiment three.
The grouting device structural representation that Fig. 4 provides for the utility model embodiment four.
The specific embodiment
Embodiment one
The grouting method flow chart that Fig. 1 provides for the utility model embodiment one, this method be applicable to shutoff carried out in the extraction hole that has angle, comprising following steps:
Step S1, in the extraction hole, inject slurries through Grouting Pipe; Wherein, said slurries are made up of No. 425 cement, water and expansion agents, and the weight ratio of said No. 425 cement, water and expansion agents is 1: 0.7: 0.1;
Step S2, when the pressure that monitors grouting pump equals 6MPa, stop slip casting.
The grouting method that the utility model embodiment one provides has obviously reduced the sealing of hole cement paste and has solidified the phenomenon that produces shrinkage joint through selected best material mixture ratio, effectively shutoff cement paste shrinkage joint and borehole circumference wall-rock crack.
Embodiment two
The grouting method flow chart that Fig. 2 provides for the utility model embodiment two, as shown in Figure 2, the utility model embodiment two provides a kind of grouting method, comprising following steps:
Step S11, in Grouting Pipe, inject slurries,, maybe, stop slip casting when monitoring a end opening that slurry recovering tube exposes from rib when having slurries to flow out when monitoring a end opening that the sealing of hole sleeve pipe exposes from rib when having slurries to flow out;
In above-mentioned steps, utilize cement paste deadweight pressure-bearing, because this method is applicable to the boring that has angle; Especially the boring that makes progress; Utilize the sealing of hole sleeve pipe in the grouting device to be inclined upwardly this moment, and pass through plug with in the gap shutoff between sealing of hole sleeve outer wall and extraction hole near an end of rib, when cement grout passes through in the high-end inflow sealing of hole sleeve pipe of sealing of hole sleeve pipe; And when low side flowed out, the state that can regard as this moment had reached the requirement of slip casting for the first time.
If grouting device is the form of two ends shutoff; Be that the sealing of hole sleeve pipe has also carried out shutoff through plug away from an end of rib and the gap between the inwall of said extraction hole; And be provided with slurry recovering tube near an end of rib at the sealing of hole sleeve pipe; When monitoring a end opening that slurry recovering tube exposes from rib when having slurries to flow out, stop slip casting.In this case, also can regard as the state of this moment and reach the requirement of slip casting for the first time.
Step S12, after one hour, in Grouting Pipe, inject slurries, when the pressure that monitors grouting pump reaches preset first threshold, stop slip casting; The span of said first threshold value is 4-6Mpa;
In above-mentioned steps, the cement paste stop was solidified in one hour, the shrinkage joint that solidifies generation can block up notes through this slip casting, and the control grouting pressure is 4-6Mpa.
Step S13, after one hour, in Grouting Pipe, inject slurries, and continue the pressure of monitoring grouting pump.
This step is last benefit slurry, further cement is shunk the crack that produces and carries out shutoff.
Step S2, when the pressure that monitors grouting pump equals 6MPa, stop slip casting.
The grouting method that the utility model embodiment two provides has obviously reduced the sealing of hole cement paste and has solidified the phenomenon that produces shrinkage joint through the mode of slip casting repeatedly, effectively shutoff cement paste shrinkage joint and borehole circumference wall-rock crack.
Embodiment three
The grouting device structural representation that Fig. 3 provides for the utility model embodiment three; As shown in Figure 3; The utility model embodiment three provides a kind of grouting device; The grouting method that adopts the utility model any embodiment to provide carries out slip casting, and this device is applicable to the boring situation of the angle of extraction axially bored line and horizontal plane more than or equal to 30 degree, and wherein grouting device comprises sealing of hole sleeve pipe 1, Grouting Pipe 2 and grouting pump 3; Sealing of hole sleeve pipe 1 is used for being inserted into extraction hole 4 and carries out gas pumping, and this sealing of hole sleeve pipe 1 carries out shutoff near an end and the gap between 4 inwalls of extraction hole of rib 5 through first plug 6; Grouting Pipe 2 is passed first plug 6 and is stretched in the extraction hole 4; The slurries output of grouting pump 3 links to each other with Grouting Pipe 2, is used in extraction hole 4, injecting slurries through Grouting Pipe 2.
During beginning slip casting; In Grouting Pipe 2, inject slurries through grouting pump 3, when the pressure that detects grouting pump 3 reaches 6Mpa, stop slip casting; Slurries have been full of between the outer wall of sealing of hole sleeve pipe 1 and the extraction hole 4 at this moment; The slurries cooled and solidified owing to selected best slurry material proportioning, has reduced the sealing of hole cement paste and has solidified the phenomenon that produces shrinkage joint.
Can be connected with floral tube 7 at sealing of hole sleeve pipe 1 away from an end of rib 5, so-called floral tube is the steel pipe that offers air vent 71 on the sidewall, and when carrying out gas pumping, gas can enter into sealing of hole sleeve pipe 1 through air vent 71, has increased the entering area of gas.When carrying out repeatedly slip casting, when monitoring a end opening that sealing of hole sleeve pipe 1 exposes from rib 5 when having slurries to flow out, stop slip casting, the state that can regard as this moment has reached the requirement of slip casting for the first time.The slurries that flow into slurries in the sealing of hole sleeve pipe 1 and promptly can be in the extraction hole 4 get into sealing of hole sleeve pipes 1 through above-mentioned air vent 71.
Further, on Grouting Pipe 1, gate valve 8 can be set, be used for controlling the injection and the shutoff of grouting pump 3 slurries.
The grouting device that the utility model embodiment three provides; In the extraction hole, inject the slurries of best proportioning through Grouting Pipe; And the method through repeatedly slip casting effectively reduced the sealing of hole cement paste and solidified the phenomenon that produces shrinkage joint, shutoff cement paste shrinkage joint and borehole circumference wall-rock crack.
Embodiment four
The grouting device structural representation that Fig. 4 provides for the utility model embodiment four; Shown in figure four; With not being both of embodiment three: the angle that this device is applicable to extraction axially bored line and horizontal plane is less than the boring situation of 30 degree; This grouting device is provided with sealing of hole sleeve pipe 1 and carries out shutoff away from an end and the gap between 4 inwalls of extraction hole of rib 5 through second plug 9 on the basis of embodiment three; Second plug 9 can be set reserve the distance of setting away from an end end face of rib 5 with sealing of hole sleeve pipe 1; In practical application; The length 13-15m of sealing of hole sleeve pipe 1; Second plug 9 is 2m with the distance that sealing of hole sleeve pipe 1 is reserved away from an end end face of rib 5, floral tube 7 is linked to each other with sealing of hole sleeve pipe 1 again, thereby can make methane gas that enough circulation areas are arranged; This grouting device also comprises slurry recovering tube 10, and slurry recovering tube 10 passes first plug 6 and stretches in the extraction hole.In practical application, the length of slurry recovering tube 10 be set to as much as possible near sealing of hole sleeve pipe 1 away from rib 5 ends, the length of Grouting Pipe 2 then guarantees to get final product near rib 5, thereby can realize the bottom-up injection of slurries.
When carrying out repeatedly slip casting, when monitoring a end opening that slurry recovering tube 10 exposes from rib 5 when having slurries to flow out, stop slip casting, the state that can regard as this moment has reached the requirement of slip casting for the first time.
Preferably, slurry recovering tube 10 is higher than said Grouting Pipe 2 and is provided with, and can make the more abundant of slurries injection.
Particularly, above-mentioned first plug 6 and second plug 9 can be polyurethane.
The grouting device that the utility model embodiment four provides; In the extraction hole, inject the slurries of best proportioning through Grouting Pipe; And the method through repeatedly slip casting effectively reduced the sealing of hole cement paste and solidified the phenomenon that produces shrinkage joint, shutoff cement paste shrinkage joint and borehole circumference wall-rock crack.
What should explain at last is: above embodiment is only in order to the technical scheme of explanation the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to previous embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the scope of each embodiment technical scheme of essence disengaging the utility model of relevant art scheme.

Claims (6)

1. a grouting device is characterized in that, comprising:
Be used for being inserted into the sealing of hole sleeve pipe that gas pumping is carried out in the extraction hole, said sealing of hole sleeve pipe carries out shutoff near an end of rib and the gap between the inwall of said extraction hole through first plug;
Grouting Pipe, said Grouting Pipe are passed said first plug and are stretched in the said extraction hole;
Grouting pump, the slurries output of said grouting pump links to each other with said Grouting Pipe, is used in said extraction hole, injecting slurries through said Grouting Pipe.
2. grouting device according to claim 1 is characterized in that:
Said sealing of hole sleeve pipe carries out shutoff away from an end of rib and the gap between the inwall of said extraction hole through second plug;
Said grouting device also comprises slurry recovering tube, and said slurry recovering tube passes said first plug and stretches in the said extraction hole.
3. grouting device according to claim 2 is characterized in that: said slurry recovering tube is higher than said Grouting Pipe setting.
4. according to claim 2 or 3 described grouting devices, it is characterized in that: said sealing of hole sleeve pipe is connected with floral tube away from an end of rib.
5. according to claim 2 or 3 described grouting devices, it is characterized in that: be provided with gate valve on said Grouting Pipe and the said slurry recovering tube.
6. according to claim 2 or 3 described grouting devices, it is characterized in that: said first plug and second plug are polyurethane.
CN2012201869928U 2012-04-27 2012-04-27 Grouting device CN202560157U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102678083A (en) * 2012-04-27 2012-09-19 淮南矿业(集团)有限责任公司 Grouting method and grouting device
CN102913273A (en) * 2012-10-31 2013-02-06 中国矿业大学 Autonomous dynamic sealing and gas extraction intelligent system for coal mine
CN103266913A (en) * 2013-05-13 2013-08-28 西南石油大学 Gas extraction method
CN103291354A (en) * 2013-05-20 2013-09-11 中国矿业大学 Filling and reinforcing method for floor roadway cross-layer pressure-relief borehole
CN103742129A (en) * 2013-12-30 2014-04-23 中国矿业大学 Method for drilling holes on soft coal seam to measure coal seam gas pressure
CN103912238A (en) * 2013-01-08 2014-07-09 李宝富 Passive up hole grouting hole sealing and check plug and grouting hole sealing method
CN104500045A (en) * 2014-12-15 2015-04-08 中铁第四勘察设计院集团有限公司 Ground temperature test method for drilling grouting in deeply buried chamber
CN104863555A (en) * 2015-05-18 2015-08-26 太原理工大学 Method for improving downhole heating coal seam gas extraction amount
CN105649573A (en) * 2016-01-11 2016-06-08 淮北矿业股份有限公司 Hole pressure sealing device for coal mine drill hole and use method of device
CN106437610A (en) * 2016-10-17 2017-02-22 华北理工大学 Method for gas extraction secondary hole sealing based on swelling agent

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102678083B (en) * 2012-04-27 2015-02-25 淮南矿业(集团)有限责任公司 Grouting method and grouting device
CN102678083A (en) * 2012-04-27 2012-09-19 淮南矿业(集团)有限责任公司 Grouting method and grouting device
CN102913273B (en) * 2012-10-31 2014-11-19 中国矿业大学 Autonomous dynamic sealing and gas extraction intelligent system for coal mine
CN102913273A (en) * 2012-10-31 2013-02-06 中国矿业大学 Autonomous dynamic sealing and gas extraction intelligent system for coal mine
CN103912238A (en) * 2013-01-08 2014-07-09 李宝富 Passive up hole grouting hole sealing and check plug and grouting hole sealing method
CN103266913B (en) * 2013-05-13 2016-08-03 西南石油大学 A kind of gas pumping method
CN103266913A (en) * 2013-05-13 2013-08-28 西南石油大学 Gas extraction method
CN103291354A (en) * 2013-05-20 2013-09-11 中国矿业大学 Filling and reinforcing method for floor roadway cross-layer pressure-relief borehole
CN103291354B (en) * 2013-05-20 2015-06-10 中国矿业大学 Filling and reinforcing method for floor roadway cross-layer pressure-relief borehole
CN103742129B (en) * 2013-12-30 2016-06-22 中国矿业大学 The method of weak seam measuring gas pressure of coal bed by drilling hole
CN103742129A (en) * 2013-12-30 2014-04-23 中国矿业大学 Method for drilling holes on soft coal seam to measure coal seam gas pressure
CN104500045A (en) * 2014-12-15 2015-04-08 中铁第四勘察设计院集团有限公司 Ground temperature test method for drilling grouting in deeply buried chamber
CN104863555A (en) * 2015-05-18 2015-08-26 太原理工大学 Method for improving downhole heating coal seam gas extraction amount
CN105649573A (en) * 2016-01-11 2016-06-08 淮北矿业股份有限公司 Hole pressure sealing device for coal mine drill hole and use method of device
CN106437610A (en) * 2016-10-17 2017-02-22 华北理工大学 Method for gas extraction secondary hole sealing based on swelling agent
CN106437610B (en) * 2016-10-17 2018-07-27 华北理工大学 A kind of gas pumping secondary hole sealing method based on swelling agent

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20121128

Termination date: 20170427