CN110424992A - The method in the lane Inclined Full-mechanized Mining Face Guo Jiu - Google Patents
The method in the lane Inclined Full-mechanized Mining Face Guo Jiu Download PDFInfo
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- CN110424992A CN110424992A CN201910729579.8A CN201910729579A CN110424992A CN 110424992 A CN110424992 A CN 110424992A CN 201910729579 A CN201910729579 A CN 201910729579A CN 110424992 A CN110424992 A CN 110424992A
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- lane
- coal
- jiu
- rail
- grillage
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- 238000005065 mining Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000003245 coal Substances 0.000 claims abstract description 59
- 230000007704 transition Effects 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
- E21D19/02—Provisional protective covers for working space for use in longwall working
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The present invention relates to coal mining fields, disclose a kind of method in the lane Inclined Full-mechanized Mining Face Guo Jiu.The present invention is using anchor cable cooperation rail as substrate, top is connect by semicircle yoke grillage on it, it is laid with integral false top, prevent wall caving leakage top range further expansion during the lane Guo Jiu, the top top coal that the grillage set up simultaneously is contacted with set cap is in same level, it is ensured that bracket smooth transition, working face realize continuous safety and high efficiency, the face moving stopping surface time is greatly decreased, improves resource recovery rate.
Description
Technical field
The present invention relates to coal mining fields, the especially a kind of method in the lane Inclined Full-mechanized Mining Face Guo Jiu.
Background technique
In coal mining, due to having more old lane, Inclined Full-mechanized Mining Face within the scope of working face extraction
Old lane is frequently encountered during exploitation, during the lane Guo Jiu, is easy to happen wall caving, inbreak influences back to cause safety problem
The normal procedure adopted.
By taking certain coal mine 3215-241 working face as an example, 3215-241 working face is located at certain the horizontal exploiting field the mine+700m, exploitation
Between absolute altitude+1167m~+1180m；Long 280m~360m is moved towards, average out to 300m tilts long 77m~114m, average out to
102m, it is 27~67 ° of seam inclination, 39 ° average；Coal seam average thickness 5.24m, 20.8 ten thousand tons of working face reserves.The coal seam is more loose
It is soft, easy slice caving, inbreak；B11 anticline is crossed during working face extraction, since anticline and synclinal shaft pressure compare concentration, top plate is split
Gap is relatively developed, and the larger above situation of gas bearing capacity has larger impact to back production, sees Fig. 1 roadway workface layout drawing.
At air return lane is away from 3021S crossdrift 100m, old lane (the horizontal northern wing main haulage roadway of+900m) away from air return lane it is flat away from
7.2m；It hangs down to bottom plate away from 5.8m, working face mining height≤2.5m away from force piece top beam shortest distance 3.3m in old lane；Old lane is arrived
The position of the force piece top beam shortest distance is located at air return lane down 3-10 away from air return lane 5.5m, old lane coverage 9.1m
Within the scope of frame, it is detailed in Fig. 2 roadway workface position profile.
3215-241 working face has normal fault f2415-1 through entire working face, fault parameter: tendency 297 °, inclination angle ∠
23 °, drop H=1.2m, normal fault are located at before air return lane A9# point 5m before 8m, transportation roadway A31# point, strike length 18~21m, right
Back production has larger impact.Working face has B11 anticlinal axis, and since anticline axle portion pressure is relatively concentrated, roof fracture is relatively developed, and gas
Content is larger (being shown in Table 3-3 geological structure situation table).
1 geological structure situation table of table
For 3215-241 working face, 3215-241 face roof direction be the horizontal northern wing main haulage roadway of+900m (+
At the horizontal northern two loading siding mouths of 900m to the horizontal northern wing main haulage roadway crossdrift 6# point of+900m, old lane), this section of main haulage roadway part
The coal seam 15-2,4# is disclosed, old lane bottom plate is, using the traditional lane Guo Jiu mode, to be somebody's turn to do in 3215-241 Coal Face Passing Through in the middle part of coal seam
Wall caving leakage useful event easily occurs when old lane.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of lanes Inclined Full-mechanized Mining Face Guo Jiu of safety and stability
Method.
The method in the lane Inclined Full-mechanized Mining Face Guo Jiu disclosed by the invention, includes the following steps:
Before working face discloses old lane, multiple rows of anchor cable lock top is set in Jiu Xiang, the rail in old lane is dismantled, rail is set up
In anchor cable bottom, multiple rows of anchor cable respectively corresponds setting rail and forms anchor net, connects top with semicircle yoke grillage on the net in anchor, is laid to
Whole false top；
It along inclined direction helps successively to be laid on rail to bracket from coal using half round timber after rail is fixed, and with iron wire handle
Half round timber is fixed on rail, connect half round timber with rail integral；
Crib building operation can be carried out after laying half round timber, grillage uses half round timber crib building from top to bottom；
After grillage is set up, the top top coal for contacting the grillage set up with set cap is in same level, it is ensured that branch
Frame smooth transition；
After the completion of shield top work, back production is normally promoted.
Preferably, before working face discloses old lane, the supporting and gas situation in tunnel are first checked；It was found that tunnel gas density
It greatly or transfinites, it is necessary to which the ventilation operation in old lane is reinforced in processing in time.
Preferably, the fixed form of rail is as follows: determine anchor cable strike separation, recycle fiery root of weld according to live anchor cable away from
Anchor cable eye is blown from rail, then installs rail, using lockset fixed rail.
Preferably, when setting up grillage, half round timber is set up in " well " font.
Preferably, the grillage half round timber four corners of erection are fixed using pawl fourth or iron wire, prevent from moving frame wood in the process
Pile collapses；
The grillage of erection must be tight with timber wedge wedge, and grillage and top plate is made to connect reality.
Preferably, true dip back production is pressed during working face extraction, and is promoted comprehensively.
Preferably, during working face extraction, back production, the control of working face entirety mining height are carried out by the seat earth that old lane discloses
Within 2.5m；Strict control cutting coal machine coal cutting depth, every knife advance rate are not more than 0.63m；Working face when cutting upper section bracket,
Coal shearer speed controls within 1.5m/min, mitigates vibration of the coal mining machine roller to coal wall.
Preferably, it after coalcutter coal cutting, stretches out extensible canopy in time and face guard carries out shield top, wall supporting, supporting newly exposes
Top coal and the coal side come, reduces the time of empty side, empty top to the greatest extent, prevents wall caving, roof fall before frame.
Preferably, the case where projecting to working face according to old lane reinforces shield top to double-level-metal net is laid in coverage
Coal operation.
Preferably, the top plate of this section is maintained at a plane, adhered to coal cutting one by working face during the coal cutting of the lane Guo Jiu
A timely sliding advance of support of bracket reduces empty top exposure duration, while this section of force piece setting load is in 8~12MPa.
The beneficial effects of the present invention are: the present invention passes through semicircle yoke using anchor cable cooperation rail as substrate on it
Grillage connects top, is laid with integral false top, it is therefore prevented that wall caving leakage top range further expansion during the lane Guo Jiu, while the grillage set up
The top top coal contacted with set cap is in same level, it is ensured that bracket smooth transition, it is high that working face realizes continuous safety
Effect exploitation, is greatly decreased the face moving stopping surface time, improves resource recovery rate.
Detailed description of the invention
Fig. 1 is the roadway workface layout drawing of the embodiment of the present invention；
Fig. 2 is 2-2 ' position profile in Fig. 1；
Fig. 3 is the schematic diagram on false top；
Fig. 4 is A-A ' cross-sectional view in Fig. 3；
Fig. 5 is B-B ' cross-sectional view in Fig. 3.
Appended drawing reference: anchor cable 1, rail 2, half round timber 3, lockset 4.
Specific embodiment
Below by taking the coal mine 3215-241 working face introduced in background technique as an example, the present invention is described in detail, In
The lane the present embodiment Zhong Jiu is the horizontal northern wing main haulage roadway of+900m, and it is horizontal to+900m to be located at the horizontal northern two loading siding mouths of+900m
At northern wing main haulage roadway crossdrift 6# point.
Working face, which uses, moves towards longwell retrusive, comprehensive mechanized coal mining method exploitation.Three machine corollary equipments are as follows: ZF5000/
15/30 type four post support shield type low caving coal hydraulic support, coalcutter are the coal mining of III type electrical haulage of MG300/720-AWD
Machine, SGZ730/200 type drag conveyor.
The method in the lane Inclined Full-mechanized Mining Face Guo Jiu includes the following steps:
Because a large amount of gas may be contained in old lane, before working face discloses old lane, supporting and the gas in tunnel are first checked
Situation；It was found that tunnel gas density is big or transfinites, it is necessary to which the ventilation operation in old lane is reinforced in processing in time.
Before working face discloses old lane, multiple rows of lock of anchor cable 1 top is set in Jiu Xiang, the rail 2 in old lane is dismantled, by rail 2
It is set up in 1 bottom of anchor cable, multiple rows of anchor cable 1 respectively corresponds setting rail 2 and forms anchor net, and multiple rows of anchor cable 1 forms anchor net, online in anchor
Top is connect with 3 frame grillage of half round timber, is laid with integral false top, it is therefore prevented that wall caving leakage top range further expansion during the lane Guo Jiu.Such as
Shown in Fig. 3, in the north+900m, wing main haulage roadway sets 3 row φ 17.8mm anchor cables 1 lock top and sets up the 15kg/m removed from Jiu Xiang and gives up
Old rail 2 not only facilitates connection using waste and old rail 2, and can with effectively save cost, yoke grillage using Φ >=16cm,
Long 2-3m half round timber 3.
It can be connected using modes such as bolt, binding, locks between rail 2 and anchor cable 1, in embodiment as shown in Figure 5,
The fixed form of rail 2 is as follows: determining 1 strike separation of anchor cable, fiery root of weld is recycled to blow according to the distance of live anchor cable 1 in rail 2
Anchor cable eye, then rail 2 is installed, using 4 fixed rail 2 of lockset.In embodiment as shown in Figures 1 to 3, the adjacent anchor cable of same row
1 space D 1 is 1.5m, and the space D 2 of bar shaped connector is 1.2m.
It along inclined direction helps successively to be laid on rail 2 to bracket from coal using half round timber 3 after rail 2 is fixed, and uses iron
Bundle of lines half round timber 3 is fixed on rail 2, connect half round timber 3 with rail 2 integral；Half round timber 3 is high-quality using Φ >=16cm's
Half round timber 3, iron wire then use 8# iron wire.
Crib building operation can be carried out after laying half round timber 3, grillage uses length for 2.0~3.0m, Φ >=
Crib building, grillage generally use wooden structures and set up the half round timber 3 of 16cm from top to bottom, with regard to concrete preferred structure
It says, in embodiment as shown in Figure 4, the grillage includes half round timber 3, and the half round timber 3 sets up into " well " font structure unit,
The half round timber 3 of adjacent " well " font structure unit intersects connection." well " font structure unit can guarantee two in length and breadth
The intensity in direction, and the half round timber 3 of each " well " font structure unit intersect connection can be by each " well " font structure list
Member connects into the stable network system, to improve its globality and stability.The both ends of " well " font structure are preferably divided
It is not erected on two adjacent rails 2, therefore, the length of half round timber 3 needs the spacing greater than rail 2, the grillage half of erection
3 four corners of round log are fixed using pawl fourth or iron wire, prevent grillage during moving frame from collapsing；The grillage of erection must use timber wedge
Wedge is tight, and grillage and top plate is made to connect reality.
After grillage is set up, stretch-draw jack fastening lockset 4 can be used, and contact the grillage set up with set cap
Top top coal is in same level, it is ensured that bracket smooth transition；
After the completion of shield top work, back production is normally promoted.
True dip back production is pressed during working face extraction, and is promoted comprehensively, and forbids arbitrarily to adjust side.
During working face extraction, back production is carried out by the seat earth that old lane discloses, in the present embodiment, i.e., along 15-4# coal
Layer bottom plate back production, working face entirety mining height control within 2.5m；Strict control cutting coal machine coal cutting depth, every knife advance rate are little
In 0.63m；When cutting upper section bracket, coal shearer speed controls within 1.5m/min working face, mitigates coal mining machine roller to coal
The vibration of wall.
After coalcutter coal cutting, stretches out extensible canopy in time and face guard carries out shield top, wall supporting.The top coal that supporting is newly exposed
And coal side, it reduces the time of empty side, empty top to the greatest extent, prevents wall caving, roof fall before frame.
When working face moves frame operation, it is too many to drop column, reduces top coal loosening to the greatest extent；Must not lifting column back and forth, prevent
Cause crushing voerhead coal；20 frame bracket of top forbids Sub-Level Caving operation.
Working face is during back production, the case where projecting to working face according to the horizontal northern wing main haulage roadway of scene+900m, to shadow
It rings and carries out being laid with double-level-metal net in range, reinforce shield top coal operation.
Working face must reinforce feed flow management work, reinforce hydraulic support maintenance, and bracket is forbidden to have leakage to alter the appearance of liquid situation,
Coalcutter driver accomplishes to cut off the water, and reduces water and washes away to coal wall.
Working face is maintained at a plane during the coal cutting of the lane Guo Jiu, by the top plate of this section, adheres to one bracket of coal cutting
Timely sliding advance of support reduces empty top exposure duration, while this section of force piece setting load is in 10MPa or so.Control working face
Mining height method, while guaranteeing support setting load 10MPa or so, top plate will not be destroyed, while can play the work of supporting roof again
With having accumulated experience achievement for the excessively different geological structures of fully mechanized coal face under complex geological condition.
Claims (10)
1. the method in the lane Inclined Full-mechanized Mining Face Guo Jiu, which comprises the steps of:
Before working face discloses old lane, multiple rows of anchor cable lock top is set in Jiu Xiang, the rail in old lane is dismantled, rail is set up in anchor
Rope bottom, multiple rows of anchor cable respectively correspond setting rail and form anchor net, connect top with semicircle yoke grillage on the net in anchor, are laid with integral
Vacation top；
It along inclined direction helps successively to be laid on rail to bracket from coal using half round timber after rail is fixed, and with iron wire semicircle
Wood is fixed on rail, connect half round timber with rail integral；
Crib building operation can be carried out after laying half round timber, grillage uses half round timber crib building from top to bottom；
After grillage is set up, the top top coal for contacting the grillage set up with set cap is in same level, it is ensured that bracket is flat
Steady transition；
After the completion of shield top work, back production is normally promoted.
2. the method in the lane Inclined Full-mechanized Mining Face Guo Jiu as described in claim 1, it is characterised in that: working face discloses old lane
Before, the supporting and gas situation in tunnel are first checked；It was found that tunnel gas density is big or transfinites, it is necessary to which processing in time is reinforced old
The ventilation operation in lane.
3. the method in the lane Inclined Full-mechanized Mining Face Guo Jiu as described in claim 1, it is characterised in that: the fixed form of rail
It is as follows: to determine anchor cable strike separation, recycle fiery root of weld to blow anchor cable eye in rail according to the distance of live anchor cable, then install iron
Rail, using lockset fixed rail.
4. the method in the lane Inclined Full-mechanized Mining Face Guo Jiu as described in claim 1, it is characterised in that: when setting up grillage,
Half round timber is set up in " well " font.
5. the method in the lane Inclined Full-mechanized Mining Face Guo Jiu as described in claim 1 or 4, it is characterised in that: the grillage of erection
Half round timber four corners are fixed using pawl fourth or iron wire, prevent grillage during moving frame from collapsing；
The grillage of erection must be tight with timber wedge wedge, and grillage and top plate is made to connect reality.
6. the method in the lane Inclined Full-mechanized Mining Face Guo Jiu as described in claim 1, it is characterised in that: during working face extraction
By true dip back production, and promote comprehensively.
7. the method in the lane Inclined Full-mechanized Mining Face Guo Jiu as described in claim 1, it is characterised in that: the working face extraction phase
Between, back production is carried out by the seat earth that old lane discloses, working face entirety mining height controls within 2.5m；Strict control coal cutting machine cut
Coal depth, every knife advance rate are not more than 0.63m；Working face when cutting upper section bracket, coal shearer speed control 1.5m/min with
It is interior, mitigate vibration of the coal mining machine roller to coal wall.
8. the method in the lane Inclined Full-mechanized Mining Face Guo Jiu as described in claim 1, it is characterised in that: after coalcutter coal cutting,
Stretch out extensible canopy and face guard in time and carry out shield top, wall supporting, top coal and the coal side that supporting is newly exposed, reduce to the greatest extent empty side,
The time on sky top, prevent wall caving, roof fall before frame.
9. the method in the lane Inclined Full-mechanized Mining Face Guo Jiu as described in claim 1, it is characterised in that: projected to according to old lane
The case where working face, reinforces shield top coal operation to double-level-metal net is laid in coverage.
10. the method in the lane Inclined Full-mechanized Mining Face Guo Jiu as described in claim 1, it is characterised in that: working face is excessively old
During the coal cutting of lane, the top plate of this section is maintained at a plane, adheres to one timely sliding advance of support of bracket of coal cutting reducing empty top
Exposure duration, while this section of force piece setting load is in 8~12MPa.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910729579.8A CN110424992A (en) | 2019-08-08 | 2019-08-08 | The method in the lane Inclined Full-mechanized Mining Face Guo Jiu |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910729579.8A CN110424992A (en) | 2019-08-08 | 2019-08-08 | The method in the lane Inclined Full-mechanized Mining Face Guo Jiu |
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Cited By (1)
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Application publication date: 20191108 |