CN108457651A - A kind of coal mine roadside packing gob side entry retaining hydraulic splitting cuts top method - Google Patents
A kind of coal mine roadside packing gob side entry retaining hydraulic splitting cuts top method Download PDFInfo
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- CN108457651A CN108457651A CN201810069139.XA CN201810069139A CN108457651A CN 108457651 A CN108457651 A CN 108457651A CN 201810069139 A CN201810069139 A CN 201810069139A CN 108457651 A CN108457651 A CN 108457651A
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- splitting
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- splitter
- coal
- pillar
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/08—Devices with pistons, plungers, or the like, pressed locally against the wall of the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
- E21F15/04—Stowing mats; Goaf wire netting; Partition walls
Abstract
The invention belongs to gob side entry retainings to cut top technical field, and in particular to a kind of coal mine roadside packing gob side entry retaining hydraulic splitting cuts top method.The present invention goaf side install hydraulic prop, ensure cut top operation safety, cut top after reduce obturator institute it is loaded；Top coal stone is cleaved using Hydraulic splitter, can arbitrarily design splitting length and depth, it is flexible and changeable, and avoid the security risk that blasting method is caused；Simultaneously as having used incompressible liquid as the pressure transmission medium cut in the work of top, the static controllability for cutting top work is realized.
Description
Technical field
The invention belongs to gob side entry retainings to cut top technical field, and in particular to a kind of coal mine roadside packing gob side entry retaining hydraulic pressure is split
It splits and cuts top method.
Background technology
In coal mine gob-side entry retaining engineering construction, due to the effect of mine pressure, by the lanes Hui at the top plate of obturator top
Form the cantilever beam with one fixed width and height.With the propulsion of coal working face, the cantilever beam will produce fracture, revolution,
Sink, to the support loads as obturator by lane.But when top plate is thicker and more hard, cantilever beam by lane to filling
Body disturbance is larger, force cutting top if not taking effective measures, obturator may become due to the excessive initiation of support load
Shape even generates destruction, and then leads to entire gob side entry retaining project failure.
It is mainly explosion, such as Publication No. 104790954A to cut the measure on top for the pressure of gob side entry retaining working face at present
Patent propose a kind of roadside packing gob side entry retaining and cut top unloading pressure by blasting method, however this explosion cut the mode speed on top compared with
Slowly, and need the people that has a power failure, removes, while there is also the security risks such as blown-out shot, and due to roadside packing gob side entry retaining engineering into
Coal working face certain distance need to be lagged behind when row, explosion is cut the security risk on top and is particularly acute in goaf.Therefore research peace
Entirely, it is significant to being smoothed out for coal mine gob-side entry retaining engineering efficiently to cut top method.
Invention content
In the presence of solving the problems, such as background technology, the present invention proposes a kind of coal mine roadside packing and is stayed along sky
Lane hydraulic splitting cuts top method.
The technical proposal of the invention is realized in this way：A kind of coal mine roadside packing gob side entry retaining hydraulic splitting cuts top side
Method, it is comprised the steps of：
Step 1：It drills in the face end support front of working face of coal seam and anchor pole, anchor cable is installed, after working face of coal seam adopted coal,
The two rows of hydraulic props of goaf side installation in region to be filled, construct gib；
Step 2：The installation form in area to be filled conveys filling slurries, filling slurry into template using slurrying and conveying equipment
Obturator is formed after liquid solidification；
Step 3：After the face end support of working face of coal seam moves frame, a row is made a call in the top plate of goaf side at obturator edge
Inclined splitting hole cleaves spacing, inclination angle, the length all same in hole；
Step 4：One splitting hole of selected lag coal working face certain distance, the installation pillar splitting in this splitting hole
Device, pillar splitter column cap is towards goaf side；
Step 5：Using the splitting hole selected in step 4 as starting point, at least two are selected successively by far from coal working face direction
Hole is cleaved, and carries out the installation of pillar splitter to splitting hole, is used between the pillar splitter in different splitting holes
It is connected in parallel；
Step 6：Start hydraulic power source, pressure is generated to pillar splitter feed flow by hydraulic pressure transfer pipeline, makes pillar splitter column
Head cuts top layer application well internal tension to gob side entry retaining, and to make to generate crack between splitting hole, crack constantly expands, and finally makes phase
Perforation is realized between adjacent splitting hole, cleaves top plate outer layer coal stone；
Step 7：Pillar splitter is mounted in the middle part of splitting hole by araeosystyle splitter release, is repeated step 1 to six, is cleaved
Top plate middle level coal stone；
Step 8：Pillar splitter is mounted on splitting hole lower part by araeosystyle splitter release, is repeated step 1 to six, is cleaved
Top plate bottom coal stone；
Step 9：After completing splitting, the hydraulic prop in splitting region is recycled；
Step 10：Step 1 is repeated to nine, until the top plate for completing entire gob side entry retaining cleaves engineering.
Wherein, the template described in step 2 can be replaced filling flexible die bag.
In step 3, splitting hole and the top plate plant tilting vertical line angle of goaf side are 15 °~30 °, between adjacent splitting hole
Away from for 0.6m~1m, hole depth is 6 m~8m, and aperture is not less than 90mm.
In step 4, the distance range of the lag coal working face is 15 m~20m.
In step 4,1 ~ 3 pillar splitter can be installed simultaneously in same splitting hole, adopted between the pillar splitter
It is connected serially.
In step 5, the splitting hole number for being carried out at the same time splitting is 2 ~ 4.
The present invention installs hydraulic prop in goaf side, ensures the safety for cutting top operation, filling is reduced after cutting top
Body institute is loaded；Top coal stone is cleaved using Hydraulic splitter, can arbitrarily design splitting length and depth, it is flexible and changeable, and
Avoid the security risk that blasting method is caused；Simultaneously as having used incompressible liquid as the pressure cut in the work of top
Power transfer medium realizes the static controllability for cutting top work.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is present invention splitting hole sectional view；
Fig. 2 is present invention splitting system structure diagram I；
Fig. 3 is temporary support structures schematic diagram of the present invention；
Fig. 4 is present invention splitting system structure diagram II；
Wherein, 1 face end support, 2 obturators, 3 splitting holes, 4. hydraulic power sources, 5 hydraulic pressure transfer pipelines, 6 pillar splitters, 7 pillars are split
Split device column cap.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of not making the creative labor
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1：As shown in Fig. 1 ~ 3, a kind of coal mine roadside packing gob side entry retaining hydraulic splitting cuts top method, its steps
It is：
Step 1：It drills in the face end support front of working face of coal seam and anchor pole, anchor cable is installed, after working face of coal seam adopted coal,
The two rows of hydraulic props of goaf side installation in region to be filled, construct gib；
Step 2：The installation form in area to be filled conveys filling slurries, filling slurry into template using slurrying and conveying equipment
Obturator 2 is formed after liquid solidification；
Step 3：After the face end support 1 of working face of coal seam moves frame, one is made a call in the top plate of goaf side at 2 edge of obturator
Inclined splitting hole 3 is arranged, spacing, inclination angle, the length all same in hole 3 are cleaved；
Step 4：One splitting hole 3 of selected lag coal working face certain distance, 1 pillar is installed in this splitting hole 3
Splitter 6, pillar splitter column cap 7 is towards goaf side；
Step 5：It is starting point with the splitting hole 3 selected in step 4, is cleaved by selecting two successively far from coal working face direction
Hole 3, as shown in Fig. 2, each 1 pillar splitter 6 of installation in each splitting hole 3, the pillar in different splitting holes 3 is split
It splits between device 6 using being connected in parallel；
Step 6：Start hydraulic power source 4, pressure is generated to 6 feed flow of pillar splitter by hydraulic pressure transfer pipeline 5, pillar is made to cleave
Device column cap 7 cuts top layer application well internal tension to gob side entry retaining, and to make to generate crack between splitting hole 3, crack constantly expands, most
Make to realize perforation between adjacent splitting hole 3 eventually, cleaves top plate outer layer coal stone；
Step 7：Pillar splitter 6 is mounted on 3 middle part of splitting hole, repeats step 1 to six, split by 6 release of araeosystyle splitter
Split top plate middle level coal stone；
Step 8：Pillar splitter 6 is mounted on splitting 3 lower part of hole, repeats step 1 to six, split by 6 release of araeosystyle splitter
Split top plate bottom coal stone；
Step 9：After completing splitting, the hydraulic prop in splitting region is recycled；
Step 10：Step 1 is repeated to nine, until the top plate for completing entire gob side entry retaining cleaves engineering.
Embodiment 2：A kind of coal mine roadside packing gob side entry retaining hydraulic splitting cuts top method, and its steps is：
Step 1：It drills in the face end support front of working face of coal seam and anchor pole, anchor cable is installed, after working face of coal seam adopted coal,
The two rows of hydraulic props of goaf side installation in region to be filled, construct gib；
Step 2：The installation form in area to be filled conveys filling slurries, filling slurry into template using slurrying and conveying equipment
Obturator 2 is formed after liquid solidification；
Step 3：After the face end support 1 of working face of coal seam moves frame, one is made a call in the top plate of goaf side at 2 edge of obturator
Inclined splitting hole 3 is arranged, splitting hole 3 and the top plate plant tilting vertical line angle of goaf side are 15 °~30 °, between adjacent splitting hole 3
Away from for 0.6m~1m, hole depth is 6 m~8m, and aperture is not less than 90mm, cleaves spacing, inclination angle, the length all same in hole 3；
Other work steps are same as Example 1.
Embodiment 3：A kind of coal mine roadside packing gob side entry retaining hydraulic splitting cuts top method, and its steps is：
Step 1：It drills in the face end support front of working face of coal seam and anchor pole, anchor cable is installed, after working face of coal seam adopted coal,
The two rows of hydraulic props of goaf side installation in region to be filled, construct gib；
Step 2：The installation form in area to be filled conveys filling slurries, filling slurry into template using slurrying and conveying equipment
Obturator 2 is formed after liquid solidification；
Step 3：After the face end support 1 of working face of coal seam moves frame, one is made a call in the top plate of goaf side at 2 edge of obturator
Inclined splitting hole 3 is arranged, splitting hole 3 and the top plate plant tilting vertical line angle of goaf side are 15 °~30 °, between adjacent splitting hole 3
Away from for 0.6m~1m, hole depth is 6 m~8m, and aperture is not less than 90mm, cleaves spacing, inclination angle, the length all same in hole 3；
Step 4：One splitting hole 3 of selected lag coal working face certain distance, as shown in figure 4, in this splitting hole 3
Two pillar splitters 6 are installed, uses and is connected in series between the two pillar splitters 6, the direction of pillar splitter column cap 7 is adopted
Dead zone side；
Step 5：It is starting point with the splitting hole 3 selected in step 4, is cleaved by selecting three successively far from coal working face direction
Hole 3 cleaves in hole 3 and is used between pillar splitter 6 as shown in figure 4, installing two pillar splitters 6 in each splitting hole 3
It is connected in series with, pillar splitter column cap 7 is towards goaf side；Other steps are same as Example 1.
Embodiment 4：A kind of coal mine roadside packing gob side entry retaining hydraulic splitting cuts top method, and its steps is：
Step 1：It drills in the face end support front of working face of coal seam and anchor pole, anchor cable is installed, after working face of coal seam adopted coal,
The two rows of hydraulic props of goaf side installation in region to be filled, construct gib；
Step 2：The installation form in area to be filled conveys filling slurries, filling slurry into template using slurrying and conveying equipment
Obturator 2 is formed after liquid solidification；
Step 3：After the face end support 1 of working face of coal seam moves frame, one is made a call in the top plate of goaf side at 2 edge of obturator
Inclined splitting hole 3 is arranged, splitting hole 3 and the top plate plant tilting vertical line angle of goaf side are 15 °~30 °, between adjacent splitting hole 3
Away from for 0.6m~1m, hole depth is 6 m~8m, and aperture is not less than 90mm, cleaves spacing, inclination angle, the length all same in hole 3；
Step 4：One splitting hole 3 of selected lag coal working face certain distance, three columns are installed in this splitting hole 3
Formula splitter 6, using being connected in series between these three pillar splitters 6, pillar splitter column cap 7 is towards goaf side；
Step 5：It is starting point with the splitting hole 3 selected in step 4, is cleaved by selecting four successively far from coal working face direction
Hole 3 is installed three pillar splitters 6 in cleaving hole 3, is connected using series connection between the pillar splitter 6 in same splitting hole 3
It connects, pillar splitter column cap 7 is in parallel between the pillar splitter 6 in adjacent splitting hole 3 towards goaf side；Other steps
It is same as Example 1.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (6)
1. a kind of coal mine roadside packing gob side entry retaining hydraulic splitting cuts top method, it is characterised in that comprise the steps of：
Step 1：It drills in the face end support front of working face of coal seam and anchor pole, anchor cable is installed, after working face of coal seam adopted coal,
The two rows of hydraulic props of goaf side installation in region to be filled, construct gib；
Step 2：The installation form in area to be filled conveys filling slurries, filling slurry into template using slurrying and conveying equipment
Obturator is formed after liquid solidification（2）；
Step 3：In the face end support of working face of coal seam（1）After moving frame, in obturator（2）Edge is in the top plate of goaf side
Make a call to the inclined splitting hole of a row（3）, cleave hole（3）Spacing, inclination angle, length all same；
Step 4：One splitting hole of selected lag coal working face certain distance（3）, in this splitting hole（3）Middle mounting post
Formula splitter（6）, pillar splitter column cap（7）Towards goaf side；
Step 5：With the splitting hole selected in step 4（3）For starting point, at least two are selected successively by far from coal working face direction
A splitting hole（3）, and to cleaving hole（3）Carry out pillar splitter（6）Installation, be mounted on different splitting holes（3）Interior pillar
Splitter（6）Between using being connected in parallel；
Step 6：Start hydraulic power source（4）, pass through hydraulic pressure transfer pipeline（5）To pillar splitter（6）Feed flow generates pressure, makes column
Formula splitter column cap（7）Top layer application well internal tension is cut to gob side entry retaining, to make splitting hole（3）Between generate crack, crack
Constantly expand, finally makes adjacent splitting hole（3）Between realize perforation, cleave top plate outer layer coal stone；
Step 7：Araeosystyle splitter（6）Release, by pillar splitter（6）Mounted on splitting hole（3）Middle part repeats step 1
To six, top plate middle level coal stone is cleaved；
Step 8：Araeosystyle splitter（6）Release, by pillar splitter（6）Mounted on splitting hole（3）Lower part repeats step 1
To six, top plate bottom coal stone is cleaved；
Step 9：After completing splitting, the hydraulic prop in splitting region is recycled；
Step 10：Step 1 is repeated to nine, until the top plate for completing entire gob side entry retaining cleaves engineering.
2. a kind of coal mine roadside packing gob side entry retaining hydraulic splitting as described in claim 1 cuts top method, it is characterised in that：Step
In rapid two, the template can be replaced filling flexible die bag.
3. a kind of coal mine roadside packing gob side entry retaining hydraulic splitting as described in claim 1 cuts top method, it is characterised in that：Step
In rapid three, hole is cleaved（3）Top plate plant tilting vertical line angle with goaf side is 15 °~30 °, adjacent splitting hole（3）Spacing be
0.6m~1m, hole depth are 6 m~8m, and aperture is not less than 90mm.
4. a kind of coal mine roadside packing gob side entry retaining hydraulic splitting as described in claim 1 cuts top method, it is characterised in that：Step
In rapid four, the distance range of the lag coal working face is 15 m~20m.
5. a kind of coal mine roadside packing gob side entry retaining hydraulic splitting as described in claim 1 cuts top method, it is characterised in that：Step
In rapid four, same splitting hole（3）It is interior that 1 ~ 3 pillar splitter can be installed simultaneously（6）, the pillar splitter（6）Between adopt
It is connected serially.
6. a kind of coal mine roadside packing gob side entry retaining hydraulic splitting as described in claim 1 cuts top method, it is characterised in that：Step
In rapid five, it is carried out at the same time the splitting hole of splitting（3）Quantity is 2 ~ 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069139.XA CN108457651B (en) | 2018-01-24 | 2018-01-24 | Coal mine roadside filling gob-side entry retaining hydraulic splitting roof cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810069139.XA CN108457651B (en) | 2018-01-24 | 2018-01-24 | Coal mine roadside filling gob-side entry retaining hydraulic splitting roof cutting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108457651A true CN108457651A (en) | 2018-08-28 |
| CN108457651B CN108457651B (en) | 2020-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810069139.XA Active CN108457651B (en) | 2018-01-24 | 2018-01-24 | Coal mine roadside filling gob-side entry retaining hydraulic splitting roof cutting method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139014A (en) * | 2018-10-29 | 2019-01-04 | 六盘水师范学院 | Top gob-side entry retaining method is cut in a kind of perforation presplitting |
| CN109372508A (en) * | 2018-12-18 | 2019-02-22 | 中煤能源研究院有限责任公司 | The hydraulic orientation of underground coal mine cuts top equipment and its construction method |
| CN109458214A (en) * | 2018-12-19 | 2019-03-12 | 河南理工大学 | A kind of low air permeability coal seam static blasting permeability-increasing gas pumping method |
| CN110173264A (en) * | 2019-06-13 | 2019-08-27 | 山东科技大学 | Lane bump method is stayed with conventional release prevention and treatment tight roof in disconnected top |
| CN110439560A (en) * | 2019-07-31 | 2019-11-12 | 四川华蓥山龙滩煤电有限责任公司 | A kind of construction technology of medium-thickness seam coal working face along the lane Kong Hu |
| CN111173512A (en) * | 2020-01-17 | 2020-05-19 | 中北大学 | Gob-side entry retaining method for retained half lane |
| CN112727459A (en) * | 2020-12-25 | 2021-04-30 | 中国矿业大学 | Mining method for reducing mining influence of shallow coal seam |
| CN116464444A (en) * | 2023-03-23 | 2023-07-21 | 中国矿业大学(北京) | Mechanical non-blasting net surface drilling expansion roof cutting pressure relief device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139014A (en) * | 2018-10-29 | 2019-01-04 | 六盘水师范学院 | Top gob-side entry retaining method is cut in a kind of perforation presplitting |
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| CN109372508A (en) * | 2018-12-18 | 2019-02-22 | 中煤能源研究院有限责任公司 | The hydraulic orientation of underground coal mine cuts top equipment and its construction method |
| CN109372508B (en) * | 2018-12-18 | 2024-03-12 | 中煤能源研究院有限责任公司 | Underground hydraulic directional roof cutting equipment for coal mine and construction method thereof |
| CN109458214A (en) * | 2018-12-19 | 2019-03-12 | 河南理工大学 | A kind of low air permeability coal seam static blasting permeability-increasing gas pumping method |
| CN110173264A (en) * | 2019-06-13 | 2019-08-27 | 山东科技大学 | Lane bump method is stayed with conventional release prevention and treatment tight roof in disconnected top |
| CN110439560A (en) * | 2019-07-31 | 2019-11-12 | 四川华蓥山龙滩煤电有限责任公司 | A kind of construction technology of medium-thickness seam coal working face along the lane Kong Hu |
| CN111173512A (en) * | 2020-01-17 | 2020-05-19 | 中北大学 | Gob-side entry retaining method for retained half lane |
| CN112727459A (en) * | 2020-12-25 | 2021-04-30 | 中国矿业大学 | Mining method for reducing mining influence of shallow coal seam |
| CN112727459B (en) * | 2020-12-25 | 2022-05-17 | 中国矿业大学 | Mining method for reducing mining influence of shallow coal seam |
| CN116464444A (en) * | 2023-03-23 | 2023-07-21 | 中国矿业大学(北京) | Mechanical non-blasting net surface drilling expansion roof cutting pressure relief device and method |
| CN116464444B (en) * | 2023-03-23 | 2024-01-19 | 中国矿业大学(北京) | Mechanical non-blasting net surface drilling expansion roof cutting pressure relief method |
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| CN108457651B (en) | 2020-04-03 |
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