CN202531098U - Broken coal-rock mass grouting system - Google Patents
Broken coal-rock mass grouting system Download PDFInfo
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- CN202531098U CN202531098U CN2012201384306U CN201220138430U CN202531098U CN 202531098 U CN202531098 U CN 202531098U CN 2012201384306 U CN2012201384306 U CN 2012201384306U CN 201220138430 U CN201220138430 U CN 201220138430U CN 202531098 U CN202531098 U CN 202531098U
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- slip casting
- hole packer
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Abstract
The utility model relates to the technical field of coal mining, and discloses a broken coal-rock mass grouting system. The grouting system comprises a deep hole, a hole packer and a chemical grouting machine, wherein the deep hole is positioned in a broken coal-rock mass in a stoping gate road in front of a stope face, and the opening of the deep hole is downward; the front end of the hole packer is connected with a slurry jetting pipe, and the tail end of the hole packer is connected with a grouting pipe; the hole packer is positioned in the deep hole and is used for packing the hole; the slurry jetting pipe is used for performing grouting on a drilled hole; the other end of the grouting pipe is connected with the chemical grouting machine; and the chemical grouting machine is used for providing slurry for pressurizing the hole packer and grouting. According to the broken coal-rock mass grouting system, the slurry is grouted in the drilled hole in the broken coal-rock mass in the stoping gate road in front of the stope face in a segmented way by adopting the hole packer, the slurry jetting pipe, the grouting pipe and the chemical grouting machine; the process is simple; the cost is low; and moreover, the operation on a coal mining working surface cannot be influenced.
Description
Technical field
The utility model relates to the coal mining technical field, particularly relates to a kind of fractured coal and rock filling system.
Background technology
In process of coal mining, often run into geological structures such as tomography, fold and cranny development band, large tracts of land roof fall, wall caving and gushing water accident very easily appear in the coal and rock loose crushing, and the serious threat coal mine downhole safety is produced.It is the effective way that addresses the above problem that fractured coal and rock is implemented grouting and reinforcing.Can be divided into two big types according to injecting paste material: cement injection and chemical grouting.Cement class injecting paste material is not suitable for coal and rock and reinforces fast owing to growing hardening time, can not injecting tiny shortcomings such as crack.Chemical slip casting material belongs to high-molecular organic material; Comprise polyurethane, epoxy resin, Lauxite etc.; Mainly pour in the coal and rock crack through pressure or chemosmosis, can be fixed in the short period of time and reach higher intensity, make that the loose crushing country rock is glued to become non-individual body.Chemical slip casting material has excellent performances such as viscosity is low, good penetrability, gain in strength is fast, adhesion strength is high, deformability is good, in engineering fields such as colliery, tunnel, water conservancy and hydropower, railway, municipal administration, obtains using more widely.
At present, the grouting mode that leading reinforcing is taked to the coal-face fractured coal and rock all is shallow bore hole slip casting.General drilling depth is at 2m-5m, in coal-face slip casting, with annotating with adopting.Not only can not fundamentally separate the potential safety hazard that structural belts such as phantom, fold and cranny development band bring, and influence the ordinary production of coal-face, reduce Coal Production efficient.
The utility model content
The technical problem that (one) will solve
The technical problem that the utility model will solve is the fractured coal and rock filling system that how to provide that a kind of technology is simple, cost is lower and can not influence the coal-face operation.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of fractured coal and rock filling system, comprises deep hole, hole packer and chemical grouting machine; Said deep hole is positioned on the fractured coal and rock of back production crossheading in stope the place ahead, and its opening down; The front end of said hole packer is connected with Grout-jetting pipe; Its end is connected with Grouting Pipe; Said hole packer is positioned at said deep hole, is used for sealing of hole, and said Grout-jetting pipe is used for slip casting is carried out in boring; The other end of said Grouting Pipe is connected with the chemical grouting machine, and said chemical grouting machine is used to provide slurries hole packer is pressurizeed and slip casting.
Wherein, Said hole packer comprises adapter sleeve, jam, core pipe, packing element and valve seat, and said adapter sleeve and valve seat lay respectively at the two ends of said core pipe, and said adapter sleeve is connected with said Grout-jetting pipe; Said valve seat is connected with said Grouting Pipe; Said jam is withheld the junction that ring is installed in adapter sleeve and core pipe through first, and said packing element is in the outside of said core pipe, and the tube wall of said core pipe is provided with fluid hole.
Wherein, Said chemical grouting machine comprises grouting pump, slip casting bucket, fluid injection threeway and static mixer, and said grouting pump is connected with the slip casting bucket, and said slip casting bucket comprises two slip casting stavings; A kind of slurries of difference splendid attire in each slip casting staving; Said two slip casting stavings are connected with the fluid injection threeway through discharging tube respectively, and another outlet of said fluid injection threeway is connected with static mixer, and said static mixer is connected with Grouting Pipe through high-pressure rubber pipe.
Wherein, the two ends of said Grouting Pipe adopt screw thread to be connected with the chemical grouting machine with hole packer respectively.
Wherein, said grouting pump provides power by blast.
(3) beneficial effect
A kind of fractured coal and rock filling system that technique scheme provides; Adopt hole packer, Grout-jetting pipe, Grouting Pipe and chemical grouting machine to carry out segmentation sealing of hole and slip casting in the deep hole on the fractured coal and rock of the back production crossheading in stope the place ahead, technology is simple, cost is lower and can not influence the coal-face operation; Further; The two ends of Grouting Pipe are adopted screw thread and hole packer and chemical grouting machine respectively; Follow-up Grouting Pipe comes off in the time of can avoiding Grouting Pipe to separate with hole packer, and the terminal Grouting Pipe of hole packer is extracted the slip casting operation of next section is not impacted smoothly.
Description of drawings
Fig. 1 is the structural representation of the utility model fractured coal and rock filling system;
Fig. 2 is the structural representation of the utility model hole packer;
Fig. 3 is the fundamental diagram of the utility model.
Wherein, 1, fractured coal and rock; 2, deep hole; 3, hole packer; 3a, adapter sleeve; 3b, jam; 3d, core pipe; 3e, packing element; 3f, valve seat; 3g, first withholds ring; 3h, fluid hole; 3i, second withholds ring; 3j, spring; 3k, steel ball; 4, Grout-jetting pipe; 5, Grouting Pipe; 6a, grouting pump; 6b, slip casting bucket; 6c, fluid injection threeway; 6d, static mixer; 6e, discharging tube; 6f, high-pressure rubber pipe; 7, wind-pressure tube.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.
Like Fig. 1 and Fig. 2, a kind of fractured coal and rock grouting method carries out slip casting on the fractured coal and rock of the back production crossheading in stope the place ahead, and its grouting method comprises:
Step 1, employing drill bit are holed on fractured coal and rock 1, and are got out a deep hole 2; Be specially: rig is laid in the nearest relatively place of chosen distance fault belt in the back production crossheading; Rig is connected with drill bit, owing to need the degree of depth of boring long, generally uses geological drilling rig to be equipped with ￠ 93 and bores; The direction of boring, inclination angle, height are decided according to the concrete condition of fractured coal and rock; Boring direction will with fault belt oblique or quadrature, reduce the length of boring as far as possible, be upward through zone of fracture 1m～2m such as tomography up to inclination, the degree of depth of boring is generally 15～40m;
Step 2, in deep hole 2, insert the hole packer 3 be connected with Grout-jetting pipe 4 and Grouting Pipe 5, Grout-jetting pipe 4 is connected the front end of hole packer 3, and Grouting Pipe 5 is connected the end of hole packer 3, and the other end of Grouting Pipe 5 is connected with the chemical grouting machine; Wherein, with before Grouting Pipe 5 is connected, clean slip casting bucket 6b, be connected with Grouting Pipe 5 again after in barrel 6b, adding slurries then with cleaning fluid at the chemical grouting machine; The grouting pump 6a of this chemical grouting machine is connected with wind-pressure tube 7, by blast power is provided, to guarantee the safety work under the coal mine;
Can disposable hole packer 3 be separated with Grouting Pipe 5 in the process of dismounting and can not cause that the follow-up Grouting Pipe that is connected comes off in boring in order to make; The terminal Grouting Pipe of hole packer is extracted the slip casting operation of next section is not impacted smoothly; The two ends of Grouting Pipe 5 adopt screw thread to be connected with the chemical grouting machine with hole packer 3 respectively, are the left-hand thread form at the terminal adapter sleeve 3a that is adopted of hole packer simultaneously.
In order to guarantee the ability to cure of slurry, the chemical grouting machine of present embodiment comprises two kinds of slurries, and these two kinds of slurries inject through fluid injection threeway 6c and inject hole packer through Grouting Pipe after static mixer 6d mixes.This static mixer 6d comprises and mixes the body helical form core pipe inner with being installed in this mixings body, guarantee slurries through the time can well mix the consolidation effect that reaches desirable, this mixing body is diameter 6 minutes, the seamless steel pipe of 100mm length.
Like Fig. 3, the detailed process that sealing of hole and slip casting are carried out in the segmentation in the above-mentioned steps 3 is:
Phase I: in stope, run under structure such as tomography, the fold zone of fracture situation, at the fractured coal and rock 1 of the back production crossheading in coal-face the place ahead 2～3 the slip casting deep holes of a row that are arranged in parallel, the degree of depth is 15m～20m; Use hole packer 3 to carry out sealing of hole, segmenting slip casting, first section hole sealing depth are 8m～10 meter, and hole packer 3 connects the Grout-jetting pipe 4 of 7m～8m, and Grout-jetting pipe 4 is offered at a distance from 0.3m and penetrated the slurry hole so that slurries can be diffused in the fractured coal and rock around the boring, and the aperture is ф 3mm; Second section sealing of hole carries out sealing of hole and slip casting at two meters of hell;
In driving face, run under the structure zone of fracture situation such as tomography, fold; After finishing, phase I slip casting can carry out normal tunneling construction; When tunneling to foot of hole the place ahead 1m～2m place, stop to tunnel the slip casting of carrying out next circulation, through two slip castings circulations and driving; Grope slurry infiltration rule and range of scatter gradually, can strengthen the degree of depth of injected hole so that back production crossheading driving can normalization;
Second stage: the injected hole degree of depth is enlarged to 30m～40m; Segmenting slip casting carries out first section slip casting, and the hole packer plug is arrived from aperture 15m～20m place; Hole packer connects 14m～19m rice Grout-jetting pipe; Grout-jetting pipe at a distance from 0.5m offer penetrate the slurry hole so that slurries can be diffused into boring around fractured coal and rock in, aperture ф 3mm, for making the slip casting effect that reaches good suitably improve grouting pressure so that slurries can be good at the infiltration; Second section injection hole sealing carries out sealing of hole and slip casting to the 2m place from hell.
Like Fig. 1, a kind of fractured coal and rock filling system of the utility model comprises deep hole 2, hole packer 3 and chemical grouting machine; Deep hole 2 is positioned on the fractured coal and rock 1 of back production crossheading in stope the place ahead, and its opening down; The front end of hole packer 3 is connected with Grout-jetting pipe 4, and its end is connected with Grouting Pipe 5, and hole packer 3 is positioned at deep hole 2; Be used for sealing of hole; Grout-jetting pipe 4 is used for deep hole 2 is carried out slip casting, and the other end of Grouting Pipe 5 is connected with the chemical grouting machine, and the chemical grouting machine is used to provide slurries so that hole packer 3 is pressurizeed.This system architecture is simple, and cost is lower, can realize disposable sealing of hole of fractured coal and rock and slip casting, does not cut and can the operation of stope be impacted.
Preferably; The chemical grouting machine comprises grouting pump 6a, slip casting bucket 6b, fluid injection threeway 6c and static mixer 6d, and grouting pump 6a is connected with slip casting bucket 6b, and slip casting bucket 6b comprises two slip casting stavings; A kind of slurries of difference splendid attire in each slip casting staving; Two slip casting stavings are connected with fluid injection threeway 6c through discharging tube 6e respectively, and another outlet of fluid injection threeway 6c is connected with static mixer 6d, and this static mixer 6d is connected with Grouting Pipe 5 through high-pressure rubber pipe 6f.Preferably, grouting pump 6a is connected with wind-pressure tube 7, by blast power is provided, to guarantee the safety work in the colliery.
Preferably, as shown in Figure 2, the hole packer 3 of present embodiment comprises adapter sleeve 3a, jam 3b, core pipe 3d, packing element 3e and valve seat 3f; Adapter sleeve 3a and valve seat 3f lay respectively at the two ends of core pipe 3d; Adapter sleeve 3a is connected with Grout-jetting pipe 4, and valve seat 3f is connected with Grouting Pipe 5, and jam 3b withholds the junction that ring 3g is installed in adapter sleeve 3a and core pipe 3d through first; Packing element 3e is positioned at the outside of core pipe 3d, and the tube wall of core pipe 3d is provided with fluid hole 3h; Slurries flow into the space between core pipe 3d and the packing element 3e through this fluid hole 3h; Under the pressurization of grouting pump 6a; Slurries are full of the space between core pipe 3d and the packing element 3e; Cause sebific duct 3e expansion to fit tightly, make the sebific duct 3e external surface and the frictional force of boring 1 inwall increase, realized the purpose of sealing of hole with deep hole 2; Along with grouting pump 6a raises to hole packer 3 applied pressures; When pressure surpasses the force value of setting, when being generally 3Mpa, slurries will be washed the jam 3b of hole packer 3 front ends open; Make slurries get into deep hole 2 and also solidify with fractured coal and rock 1 gradually, realized disposable sealing of hole slip casting along Grout-jetting pipe 4.Packing element 3e withholds ring 3i through second and core pipe 3d fixes.For slurries are not flow backwards, between core pipe 3d and valve seat 3f, be provided with spring 3j and steel ball 3k successively.
Can disposable hole packer 3 be separated with Grouting Pipe 5 in the process of dismounting and can not cause that the follow-up Grouting Pipe that is connected comes off in boring in order to make; The terminal Grouting Pipe of hole packer is extracted the slip casting operation of next section is not impacted smoothly; The two ends of the Grouting Pipe 5 of the utility model adopt screw thread to be connected with the chemical grouting machine with hole packer 3 respectively; Be the left-hand thread form at the terminal adapter sleeve 3a that is adopted of hole packer simultaneously; Grouting Pipe 5 is processed by 6 fens seamless steel pipes, can process 1m～2m length.Grout-jetting pipe 4 is that 6 fens pvc pipes of 3mm are processed by wall thickness generally, cuts into the long segmentation of 1m-2m as required, and the Grout-jetting pipe length of inserting boring determines according to starching segment length, is reduced 1m and confirms according to starching segment length basically.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and replacement, these improvement and replacement also should be regarded as the protection domain of the utility model.
Claims (5)
1. a fractured coal and rock filling system is characterized in that, comprises deep hole, hole packer and chemical grouting machine; Said deep hole is positioned on the fractured coal and rock of back production crossheading in stope the place ahead, and its opening down; The front end of said hole packer is connected with Grout-jetting pipe; Its end is connected with Grouting Pipe; Said hole packer is positioned at said deep hole, is used for sealing of hole, and said Grout-jetting pipe is used for slip casting is carried out in boring; The other end of said Grouting Pipe is connected with the chemical grouting machine, and said chemical grouting machine is used to provide slurries hole packer is pressurizeed and slip casting.
2. fractured coal and rock filling system as claimed in claim 1 is characterized in that, said hole packer comprises adapter sleeve, jam, core pipe, packing element and valve seat; Said adapter sleeve and valve seat lay respectively at the two ends of said core pipe; Said adapter sleeve is connected with said Grout-jetting pipe, and said valve seat is connected with said Grouting Pipe, and said jam is withheld the junction that ring is installed in adapter sleeve and core pipe through first; Said packing element is in the outside of said core pipe, and the tube wall of said core pipe is provided with fluid hole.
3. fractured coal and rock filling system as claimed in claim 1; It is characterized in that; Said chemical grouting machine comprises grouting pump, slip casting bucket, fluid injection threeway and static mixer, and said grouting pump is connected with the slip casting bucket, and said slip casting bucket comprises two slip casting stavings; A kind of slurries of difference splendid attire in each slip casting staving; Said two slip casting stavings are connected with the fluid injection threeway through discharging tube respectively, and another outlet of said fluid injection threeway is connected with static mixer, and said static mixer is connected with Grouting Pipe through high-pressure rubber pipe.
4. fractured coal and rock filling system as claimed in claim 1 is characterized in that, it is characterized in that, the two ends of said Grouting Pipe adopt screw thread to be connected with the chemical grouting machine with hole packer respectively.
5. fractured coal and rock filling system as claimed in claim 3 is characterized in that said grouting pump provides power by blast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201384306U CN202531098U (en) | 2012-04-01 | 2012-04-01 | Broken coal-rock mass grouting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201384306U CN202531098U (en) | 2012-04-01 | 2012-04-01 | Broken coal-rock mass grouting system |
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| CN202531098U true CN202531098U (en) | 2012-11-14 |
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| CN2012201384306U Expired - Fee Related CN202531098U (en) | 2012-04-01 | 2012-04-01 | Broken coal-rock mass grouting system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635327A (en) * | 2012-04-01 | 2012-08-15 | 天地科技股份有限公司 | Grouting method and system of cracked coal rock mass |
| CN103837366A (en) * | 2014-03-10 | 2014-06-04 | 中国水电顾问集团华东勘测设计研究院有限公司 | Visible sampling method for fracture network in surrounding rock |
| CN104775789A (en) * | 2015-04-28 | 2015-07-15 | 武汉大学 | Self-dissolving grouting reinforcing method for water-rich broken soft rock tunnel |
| CN117846537A (en) * | 2023-12-25 | 2024-04-09 | 中煤科工开采研究院有限公司 | Deep hole rollback type self-cleaning grouting pipeline and method |
-
2012
- 2012-04-01 CN CN2012201384306U patent/CN202531098U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635327A (en) * | 2012-04-01 | 2012-08-15 | 天地科技股份有限公司 | Grouting method and system of cracked coal rock mass |
| CN102635327B (en) * | 2012-04-01 | 2015-04-22 | 天地科技股份有限公司 | Grouting method and system of cracked coal rock mass |
| CN103837366A (en) * | 2014-03-10 | 2014-06-04 | 中国水电顾问集团华东勘测设计研究院有限公司 | Visible sampling method for fracture network in surrounding rock |
| CN104775789A (en) * | 2015-04-28 | 2015-07-15 | 武汉大学 | Self-dissolving grouting reinforcing method for water-rich broken soft rock tunnel |
| CN104775789B (en) * | 2015-04-28 | 2017-03-08 | 武汉大学 | Grouting strengthening method is dissolved certainly in a kind of rich water broken soft rock tunnel |
| CN117846537A (en) * | 2023-12-25 | 2024-04-09 | 中煤科工开采研究院有限公司 | Deep hole rollback type self-cleaning grouting pipeline and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20140401 |