CN106593489A - Difficult mining coal seam bottom plate thin layer limestone high-pressure strong aquifer karst fissure aggregate perfusion method - Google Patents
Difficult mining coal seam bottom plate thin layer limestone high-pressure strong aquifer karst fissure aggregate perfusion method Download PDFInfo
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- CN106593489A CN106593489A CN201611101491.4A CN201611101491A CN106593489A CN 106593489 A CN106593489 A CN 106593489A CN 201611101491 A CN201611101491 A CN 201611101491A CN 106593489 A CN106593489 A CN 106593489A
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- Prior art keywords
- aggregate
- thin layer
- plate thin
- perfusion
- karst
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 235000019738 Limestone Nutrition 0.000 title claims abstract description 21
- 239000006028 limestone Substances 0.000 title claims abstract description 21
- 230000010412 perfusion Effects 0.000 title claims abstract description 16
- 238000005065 mining Methods 0.000 title abstract description 9
- 239000003245 coal Substances 0.000 title abstract description 5
- 239000004568 cement Substances 0.000 claims abstract description 23
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000011084 recovery Methods 0.000 claims description 18
- 239000011440 grout Substances 0.000 claims description 13
- 210000002966 serum Anatomy 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000007569 slipcasting Methods 0.000 claims description 7
- 239000010881 fly ash Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000011083 cement mortar Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 27
- 230000007547 defect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000010408 sweeping Methods 0.000 abstract 2
- 238000005429 filling process Methods 0.000 abstract 1
- 239000011268 mixed slurry Substances 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 description 4
- 239000003673 groundwater Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002956 ash Substances 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a difficult mining coal seam bottom plate thin layer limestone high-pressure strong aquifer karst fissure aggregate perfusion method. The difficult mining coal seam bottom plate thin layer limestone high-pressure strong aquifer karst fissure aggregate perfusion method comprises the following steps that (1) aggregates are perfused at an opening of a drilling horizontal section, and aggregate perfusion is stopped after hole sealing of the aggregates; (2) hole sweeping is conducted, and then mixed slurry is perfused; (3) grouting is continued after an orifice device is added at a drilling opening, and cement slurry is injected; and (4) the cement slurry is injected to the opening, and when an orifice is at the normal pressure, perfusion is continued for 1 h. By adopting the technical scheme, the aggregate perfusion technology can rapidly fill large karst fissures; by means of the filling mode, a water resistant body is formed after aggregate filling, the filling process is shortened, and meanwhile, the defect that the perfusion plugging aggregates cannot reach the fissures easily due to repeated hole sweeping in the prior art is effectively overcome; the perfusion efficiency is improved; working face extraction is ensured; the water burst phenomenon is avoided; and the mining safety is ensured.
Description
Technical field
The invention belongs to coal mining field, it is more particularly related to a kind of hard-to-recovery reserve base plate thin layer limestone
High pressure strong aquifer Karst Fissures aggregate method for filling.
Background technology
In process of coal mining, meet large-scale cranny structure and adopt in drilling and split in working face drilling filler aggregate blocking karst
Easily there is aggregate blocking drilling in gap, this filling mode, aggregate is difficult to reach at Karst Fissures, and prior art is adopted and swept repeatedly
Hole, perfusion closure, this closure efficiency is low, and aggregate is difficult to reach and closure is completed at crack, causes the puzzlement of working face running pulp, splits
Gush outside substantial amounts of underground water at gap, water burst phenomenon occurs in the back production for causing the generation of water leak accident, working face, even results in landslide
Etc. accident, to mining potential safety hazard is brought.
The content of the invention
The technical problem to be solved is to provide the groundwater resources that water outlet band is concentrated in a kind of blocking, effectively closure
The hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate method for filling of water-bearing layer Karst Fissures.
To achieve these goals, the technical scheme taken of the present invention is：A kind of hard-to-recovery reserve base plate thin layer for being provided
Limestone high pressure strong aquifer Karst Fissures aggregate method for filling, comprises the steps：
1) the open injecting aggregate of drilling horizontal section, after aggregate sealing of hole injecting aggregate is stopped；
2) cleaning bottom of hole, then irrigates mixed serum；
3) hole month adds and continues slip casting after the device of aperture, injects cement grout；
4) cement grout is injected to oral area, when aperture is normal pressure, continue to irrigate 1h.
A kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate method for filling disclosed by the invention,
Step 1) in drill open injecting aggregate when pressure value be≤2MPa；Aggregate rate of flooding is 2m3/h。
A kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate method for filling disclosed by the invention,
Step 2) in cleaning bottom of hole be the aggregate cleared up at aperture to Karst Fissures, now the pressure in hole is≤2MPa.
A kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate method for filling disclosed by the invention,
Step 2) in mixed serum add flyash for cement, cement and flyash quality ratio=(1～2) 1；The ratio of the mixed serum of perfusion
Weight is 1.4～1.6kg/l.
A kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate method for filling disclosed by the invention,
Step 3) injection cement grout, the wherein proportion of cement grout is 1.4～1.6kg/l.
A kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate method for filling disclosed by the invention,
Aggregate is yellow ground, and the granularity of yellow ground is 1～10mm.
Using technical scheme, open slip casting fills large-scale crack using big flow aggregate, and drilling horizontal section is filled
Note aggregate, aggregate is yellow ground, and the good conduit pipe of cracks aperture is gradually blocked up yellow ground reality densification, completes big crack closure；Bone
The body that blocks water is formed after the completion of material filling, the groundwater resources for concentrating water outlet band have been blocked, water-bearing layer karst has effectively been blocked and has been split
Then gap, cleaning bottom of hole irrigates mixed serum, and cement/pulverized fuel ash slurry enters exhalant canal, and rapid filling fracture has reached quick
The purpose of closure water burst；Hole month adds and continues slip casting after the device of aperture, injects cement grout, and reinforcing blocks water body, is formed with certain
The body that blocks water of the similar rock mass of intensity, effectively cut-off the prominent of underground water is gushed；Aggregate perfusion technique can enter to large-scale Karst Fissures
Row Fast Filling, this filling method shortens stowing operation, while being prevented effectively from using the body that blocks water is formed after the completion of aggregate filling
Prior art cleaning bottom of hole repeatedly, irrigates aggregate of plugging material and is difficult to reach the defect at crack, improves charging efficiency, it is ensured that working face
Back production avoids the generation of water burst phenomenon, it is ensured that the safety of mining.
Below with reference to embodiment, the present invention is described in detail.
Description of the drawings
The content and the mark in figure expressed by each width accompanying drawing of this specification is briefly described below：
Fig. 1 is a kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate method for filling injecting aggregate
The design sketch of the body that blocks water is formed afterwards.
Specific embodiment
Below by the description to embodiment, the shape of each component for example involved to the specific embodiment of the present invention,
Construction, the mutual alignment between each several part and annexation, the effect of each several part and operation principle, manufacturing process and operate with
Method etc., is described in further detail, to help those skilled in the art to have inventive concept of the invention, technical scheme
More complete, accurate and deep understanding.
A kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate method for filling of the present invention, including such as
Lower step：
1) the open injecting aggregate of drilling horizontal section, after aggregate sealing of hole injecting aggregate is stopped；Press during the open injecting aggregate that drills
Force value is≤2MPa；Aggregate rate of flooding is 2m3/h；Aggregate is yellow ground, and the granularity of yellow ground is 1～10mm；
2) cleaning bottom of hole, cleaning bottom of hole is the aggregate cleared up at aperture to Karst Fissures, and now the pressure in hole is≤2MPa；Then fill
Note mixed serum, mixed serum adds flyash, cement and flyash quality ratio=(1～2) 1 for cement；The mixed serum of perfusion
Proportion be 1.4～1.6kg/l；
3) hole month adds and continues slip casting after the device of aperture, injects cement grout, and the proportion of cement grout is 1.4～1.6kg/
l；
4) cement grout is injected to oral area, when aperture is normal pressure, continue to irrigate 1h.
Fig. 1 is a kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate method for filling injecting aggregate
The design sketch of the body that blocks water is formed afterwards.
It can be seen that using technical scheme, open slip casting is split using the filling of big flow aggregate is large-scale
Gap, drilling horizontal section injecting aggregate, aggregate is yellow ground, and the good conduit pipe of cracks aperture is gradually blocked up yellow ground reality densification, complete
Into the closure of big crack；The body that blocks water is formed after the completion of aggregate filling, the groundwater resources for concentrating water outlet band have been blocked, is effectively blocked
Then water-bearing layer Karst Fissures, cleaning bottom of hole irrigates mixed serum, and cement/pulverized fuel ash slurry enters exhalant canal, and rapid filling is split
Gap, has reached the purpose of quick blocking water burst；Hole month adds and continues slip casting after the device of aperture, injects cement grout, and reinforcing blocks water
Body, is formed with the body that blocks water of the similar rock mass of some strength, and effectively cut-off the prominent of underground water is gushed；Aggregate perfusion technique can be to big
Type Karst Fissures carry out Fast Filling, and this filling method shortens stowing operation using the body that blocks water is formed after the completion of aggregate filling,
Prior art cleaning bottom of hole repeatedly is effectively prevent simultaneously, aggregate of plugging material is irrigated and is difficult to reach the defect at crack, improve perfusion effect
Rate, it is ensured that working face extraction avoids the generation of water burst phenomenon, it is ensured that the safety of mining.
The present invention is exemplarily described above in conjunction with embodiment, it is clear that the present invention is implemented and do not receive above-mentioned side
The restriction of formula, if the improvement of the various unsubstantialities that method of the present invention design and technical scheme are carried out is employed, or without
Improve and the design of the present invention and technical scheme are directly applied to into other occasions, within protection scope of the present invention.
Claims (6)
1. a kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate method for filling, it is characterised in that：Bag
Include following steps：
1) the open injecting aggregate of drilling horizontal section, after aggregate sealing of hole injecting aggregate is stopped；
2) cleaning bottom of hole, then irrigates mixed serum；
3) hole month adds and continues slip casting after the device of aperture, injects cement grout；
4) cement grout is injected to oral area, when aperture is normal pressure, continue to irrigate 1h.
2. irrigate according to a kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate described in claim 1
Method, it is characterised in that：Described step 1) in drill open injecting aggregate when pressure value be≤2MPa；Aggregate rate of flooding is
2m3/h。
1.4～1.5kg/l of cement mortar proportion in the step, slurry flow is 0.5～1 times of wastage.
3. irrigate according to a kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate described in claim 1
Method, it is characterised in that：Described step 2) in cleaning bottom of hole be the aggregate cleared up at aperture to Karst Fissures, the now pressure in hole
For≤2MPa.
4. irrigate according to a kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate described in claim 1
Method, it is characterised in that：Described step 2) in mixed serum add flyash for cement, cement and flyash quality than=(1～
2):1；The proportion of the mixed serum of perfusion is 1.4～1.6kg/l.
5. irrigate according to a kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate described in claim 1
Method, it is characterised in that：Described step 3) injection cement grout, the wherein proportion of cement grout is 1.4～1.6kg/l.
6. irrigate according to a kind of hard-to-recovery reserve base plate thin layer limestone high pressure strong aquifer Karst Fissures aggregate described in claim 1
Method, it is characterised in that：Described aggregate is yellow ground, and the granularity of yellow ground is 1～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101491.4A CN106593489A (en) | 2016-12-02 | 2016-12-02 | Difficult mining coal seam bottom plate thin layer limestone high-pressure strong aquifer karst fissure aggregate perfusion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101491.4A CN106593489A (en) | 2016-12-02 | 2016-12-02 | Difficult mining coal seam bottom plate thin layer limestone high-pressure strong aquifer karst fissure aggregate perfusion method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106593489A true CN106593489A (en) | 2017-04-26 |
Family
ID=58594806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611101491.4A Pending CN106593489A (en) | 2016-12-02 | 2016-12-02 | Difficult mining coal seam bottom plate thin layer limestone high-pressure strong aquifer karst fissure aggregate perfusion method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593489A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832767A (en) * | 2021-01-05 | 2021-05-25 | 河南理工大学 | Coal seam roof reinforcing apparatus based on high pressure gas-solid mixture is filled |
| CN113338847A (en) * | 2021-06-08 | 2021-09-03 | 中国矿业大学(北京) | Hole sealing aggregate, filling bag and hole sealing method for overburden three-zone detection drilling |
| CN114320412A (en) * | 2021-11-26 | 2022-04-12 | 淮北矿业股份有限公司 | Grouting anchor rod hole sealing tray |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5671581A (en) * | 1994-12-07 | 1997-09-30 | Nagahama; Shigeo | Water cut-off process for concrete structure |
| RU2112881C1 (en) * | 1996-07-19 | 1998-06-10 | Кузбасский государственный технический университет | Method for strengthening of rock matter |
| RU2316649C1 (en) * | 2006-08-21 | 2008-02-10 | Дальневосточный государственный технический университет | Underground gasification method |
| CN102704933A (en) * | 2012-05-25 | 2012-10-03 | 中国矿业大学 | Isolated-section grouting filling coal-mining method for mining overburden rock |
| CN103742172A (en) * | 2013-12-02 | 2014-04-23 | 陕西煤业化工技术研究院有限责任公司 | Method for blocking hydrogen-sulfide-contained water bursting point on bottom plate in grouting mode |
-
2016
- 2016-12-02 CN CN201611101491.4A patent/CN106593489A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5671581A (en) * | 1994-12-07 | 1997-09-30 | Nagahama; Shigeo | Water cut-off process for concrete structure |
| RU2112881C1 (en) * | 1996-07-19 | 1998-06-10 | Кузбасский государственный технический университет | Method for strengthening of rock matter |
| RU2316649C1 (en) * | 2006-08-21 | 2008-02-10 | Дальневосточный государственный технический университет | Underground gasification method |
| CN102704933A (en) * | 2012-05-25 | 2012-10-03 | 中国矿业大学 | Isolated-section grouting filling coal-mining method for mining overburden rock |
| CN103742172A (en) * | 2013-12-02 | 2014-04-23 | 陕西煤业化工技术研究院有限责任公司 | Method for blocking hydrogen-sulfide-contained water bursting point on bottom plate in grouting mode |
Non-Patent Citations (1)
| Title |
|---|
| 中国煤炭工业协会编: "《煤矿防治水技术》", 31 March 2014 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832767A (en) * | 2021-01-05 | 2021-05-25 | 河南理工大学 | Coal seam roof reinforcing apparatus based on high pressure gas-solid mixture is filled |
| CN113338847A (en) * | 2021-06-08 | 2021-09-03 | 中国矿业大学(北京) | Hole sealing aggregate, filling bag and hole sealing method for overburden three-zone detection drilling |
| CN113338847B (en) * | 2021-06-08 | 2022-02-25 | 中国矿业大学(北京) | Filling bag for overburden three-zone detection drilling and hole sealing method |
| US11459849B1 (en) | 2021-06-08 | 2022-10-04 | China University Of Mining And Technology, Beijing | Filling bag and sealing method for drilled hole for detection in three zones of overburden |
| CN114320412A (en) * | 2021-11-26 | 2022-04-12 | 淮北矿业股份有限公司 | Grouting anchor rod hole sealing tray |
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Application publication date: 20170426 |