CN103133025A - Gob-side retaining entry beforehand wall-caving roof-reinforcing method - Google Patents

Gob-side retaining entry beforehand wall-caving roof-reinforcing method Download PDF

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Publication number
CN103133025A
CN103133025A CN2013100563261A CN201310056326A CN103133025A CN 103133025 A CN103133025 A CN 103133025A CN 2013100563261 A CN2013100563261 A CN 2013100563261A CN 201310056326 A CN201310056326 A CN 201310056326A CN 103133025 A CN103133025 A CN 103133025A
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CN
China
Prior art keywords
gob
advance
support
opened
entry
Prior art date
Application number
CN2013100563261A
Other languages
Chinese (zh)
Inventor
郭忠平
尹中凯
刘崇凌
段会强
杨松
Original Assignee
山东科技大学
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Application filed by 山东科技大学 filed Critical 山东科技大学
Priority to CN2013100563261A priority Critical patent/CN103133025A/en
Publication of CN103133025A publication Critical patent/CN103133025A/en

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Abstract

The invention discloses a gob-side retaining entry beforehand wall-caving roof-reinforcing method. Wall caving is performed at a position in need of entry-side support in front of a working face beforehand, the roof above a position where coal is mined is reinforced, and an anchor rod and W steel band combined support or an anchor rod, anchor mesh, anchor cable and W steel band combined support roof reinforcing mode is utilized. According to the gob-side retaining entry beforehand wall-caving roof-reinforcing method, the completeness of immediate roofs of gob-side retaining entries can be guaranteed, the self-bearing capacity is enhanced, bedding separation between immediate roofs and main roofs is prevented, the combination of in-entry support and entry-side support is close, and the support system function is fully developed.

Description

Gob side entry retaining is opened side solid top method in advance
Technical field
The present invention relates to be applied under coal mine is to keep the stable supporting method of gob side entry retaining, is specifically related to a kind of gob side entry retaining and opens in advance side solid top method.
Background technology
Gob side entry retaining has without coal pillar mining can be alleviated digging and take over anxiety, the low coal recovery rate advantages of higher that reaches of tunnelling rate, can also realize simultaneously that work plane Y type ventilates, and create conditions for goaf and coal seam overlying strata fissure zone gas drainage under suction, but adopt edge air gallery technology, must solve the roadside support technical problem.The gob side entry retaining roadside support technology of China's employing at present all focuses on the application of the single aspect of other passive protecting body, lane, and the work of initiatively strengthening roadside support just begins to launch in recent years.But generally all only considered the support pattern of the other active support in lane, very few to the supporting time research of the other active support in lane.The overlong time that supporting is untimely, support pattern is unreasonable or the active support rear overhang pushes up all can have a negative impact to gob side entry retaining stability.
Summary of the invention
Based on above-mentioned technical problem, the invention provides a kind of gob side entry retaining and open in advance side solid top method.
Its technical solution is:
A kind of gob side entry retaining is opened side solid top method in advance, it comprises the following steps: the position that need to carry out roadside support in work plane the place ahead is opened side in advance, to after this place's coal body extraction, the top board of its top be reinforced, the roof reinforcement mode adopts anchor pole and W steel band combined supporting or anchor pole, anchor net, anchor cable and W steel band combined supporting.
Preferably, the described length of opening in advance the side part is 3.5m, and wide is 2.5m, and height is identical with mining height.
Preferably, before opening side, adopt beam three post л shaped steel to add strong supporting at face end.
Preferably, open the mode that side adopts coal blasting.
Preferably, after top board is reinforced, then adopt the mode of hydraulic prop complexed metal articulated roof beam to add strong supporting temporarily; When the advance of the face moved frame, leading removal hindered the hydraulic prop that advances, and after moving frame, in time adds later on hydraulic prop at support, and under the protection of hydraulic prop, carried out early the other passive protecting in lane.
Compared with prior art, useful technique effect of the present invention is:
1, the present invention opens side in advance in the position that work plane the place ahead design need to be carried out roadside support, subsequently the top board of its top is reinforced, guaranteed the integrality of gob side entry retaining top board, for good condition has been created in roadside packing construction subsequently, avoid immediate roof and top top absciss layer substantially, effectively reduce the pressure that the roadside packing body bears, kept stability of the roadway.
2, the present invention has realized the combination of supporting in roadside support and lane, makes supporting in roadside support and lane really become whole support system, gives full play to its support capacity; Realize simultaneously the combination of active support and passive protecting, avoided the active support construction to cause can not in time the not construct appearance of phenomenon of passive protecting.
3, the invention enables the top board of roadside support position and top, tunnel top board globality to strengthen, produced the difference on the bearing strength with the unguyed top board in the outside simultaneously, be conducive to subsequently the other passive protecting body in lane cut the top.
Description of drawings
Fig. 1 is gob side entry retaining generalized section of the present invention.
In figure: the other passive protecting body in 1-lane, 2-л shaped steel, 3-in advance open the side part, 4-anchor pole, 5-anchor net, 6-anchor cable, 7-W steel band, 8-immediate roof.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
In conjunction with Fig. 1, gob side entry retaining is opened side solid top method in advance, comprises the following steps:
(1) position that need to carry out roadside support in work plane the place ahead is opened side in advance, open in advance side part 3 and unmind the work plane coal body for design gob side entry retaining roadside support position, the length of opening in advance side part 3 is 3.5m, wide is 2.5m, slightly be wider than the design width of the other passive protecting body in lane (1), height is identical with mining height.
(2) open in advance the mode that side adopts coal blasting, will open the coal body extraction of side place and the top board of its top is reinforced after opening in advance side; The roof reinforcement mode is determined according to roof condition, adopt the combined supporting mode of anchor pole 4 and W steel band 7 in the position preferably at roof condition, combined supporting mode at undesirable position employing anchor pole 4, anchor net 5, anchor cable 6 and W steel band 7 of roof condition, additionally add anchor cable 6 and anchor net 5, to strengthen the integrality of top board 8.
Choosing with reference to supporting parameter in the lane of the model of above-mentioned application anchor pole, supporting parameter, W steel band are common mine support W steel band, and the anchor net is 2000 * 1600mm diamond mesh.
In order to strengthen the supporting effect of top board, before opening side, adopt beam three post л shaped steel 2 to add strong supporting at face end.After top board is reinforced, then adopt the mode of hydraulic prop complexed metal articulated roof beam to add strong supporting temporarily.When the advance of the face moved frame, leading removal hindered the hydraulic prop that advances, and after moving frame, in time adds later on hydraulic prop at support, and under the protection of hydraulic prop, carried out early the other passive protecting in lane.
In concrete enforcement, gob side entry retaining is opened in advance the solid top of side and can be implemented as follows.
Embodiment:
1. support material model
Anchor pole: High strength bolt, pallet are the i iron pallet, length 800mm.
Anchor net: 2000 * 1600mm diamond mesh.
Anchor cable: Φ 17.8mm * 6500mm anchor cable.
Steel band: mining common W steel band.
2. supporting parameter
Bolt interval is 0.8m, upwards directly beats; Anchor cable is made a call to one along roadway direction every 2.4m, apart from the gob side entry retaining wall 0.8m of side, upwards directly beats.
3. work progress
Open side and adopt coal blasting, artificial treatment float coal.Strictly blow out by the rules requirement, blow out in the rear transporter of in time float coal being packed into or transport on belt, with opening side with playing the supportings such as anchor net and anchor cable.Arrange hydraulic prop and complexed metal articulated roof beam supporting roof by array pitch 0.8m, post apart from 1m opening the side position, hydraulic prop sets up the rear anti-down rope of in time having fastened, and support force of single-column must not be less than 90kN.Along with pushing to adopt, work plane opens continuously forward the Gu Ding of side.
The above; only be the better implementation method of patent of the present invention; but the protection domain of patent of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that patent of the present invention discloses; the variation that can expect easily or replacement are within all should being encompassed in the protection domain of patent of the present invention.

Claims (5)

1. a gob side entry retaining is opened side solid top method in advance, it is characterized in that comprising the following steps: the position that need to carry out roadside support in work plane the place ahead is opened side in advance, to after this place's coal body extraction, the top board of its top be reinforced, the roof reinforcement mode adopts anchor pole and W steel band combined supporting or anchor pole, anchor net, anchor cable and W steel band combined supporting.
2. a kind of gob side entry retaining according to claim 1 is opened side solid top method in advance, it is characterized in that: the described length of opening in advance the side part is 3.5m, and wide is 2.5m, and height is identical with mining height.
3. a kind of gob side entry retaining according to claim 1 is opened side solid top method in advance, it is characterized in that: before opening side, adopt beam three post л shaped steel to add strong supporting at face end.
4. a kind of gob side entry retaining according to claim 1 is opened side solid top method in advance, it is characterized in that: open the mode that side adopts coal blasting.
5. a kind of gob side entry retaining according to claim 1 is opened side solid top method in advance, it is characterized in that: after top board is reinforced, then adopt the mode of hydraulic prop complexed metal articulated roof beam to add strong supporting temporarily; When the advance of the face moved frame, leading removal hindered the hydraulic prop that advances, and after moving frame, in time adds later on hydraulic prop at support, and under the protection of hydraulic prop, carried out early the other passive protecting in lane.
CN2013100563261A 2013-02-22 2013-02-22 Gob-side retaining entry beforehand wall-caving roof-reinforcing method CN103133025A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013100563261A CN103133025A (en) 2013-02-22 2013-02-22 Gob-side retaining entry beforehand wall-caving roof-reinforcing method

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Application Number Priority Date Filing Date Title
CN2013100563261A CN103133025A (en) 2013-02-22 2013-02-22 Gob-side retaining entry beforehand wall-caving roof-reinforcing method

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103696788A (en) * 2013-12-17 2014-04-02 中国神华能源股份有限公司 Abandoned roadway timbering device and construction method of fully mechanized coal mining face passed through abandoned roadway
CN103758529A (en) * 2013-12-28 2014-04-30 北京昊华能源股份有限公司 Coal mine gob-side entry retaining side supporting method
CN104806246A (en) * 2015-05-08 2015-07-29 贵州盘江精煤股份有限公司 Gob-side entry retaining method for coal mine gateway by directional-predetermined crack blasting and truncating crest and pressure relief mode
CN106053214A (en) * 2016-07-28 2016-10-26 西安工业大学 Testing apparatus for research of imposed load of bed separation to anchor pole and manufacturing method
CN107387084A (en) * 2017-09-15 2017-11-24 中国矿业大学 A kind of gob side entry retaining reduces the construction method for cutting top depth

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2164295C2 (en) * 1998-07-31 2001-03-20 Государственный научно-исследовательский институт горной геомеханики и маркшейдерского дела - Межотраслевой научный центр (ВНИМИ) Section of roof bolting
WO2004074634A2 (en) * 2003-02-19 2004-09-02 F. M. Locotos Co., Inc. Tubular mining bolt and method
CN2656637Y (en) * 2003-10-10 2004-11-17 淄博矿业集团有限责任公司许厂煤矿 Single body upright column type temporary supporting protection device
CN101457651A (en) * 2008-11-19 2009-06-17 淮南矿业(集团)有限责任公司 Filling stack advanced support method along empty tunnel in coal-gas co-milling Y-shaped ventilating system
CN101503959A (en) * 2008-11-26 2009-08-12 枣庄矿业(集团)有限责任公司滨湖煤矿 Gob-side entry retaining support method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2164295C2 (en) * 1998-07-31 2001-03-20 Государственный научно-исследовательский институт горной геомеханики и маркшейдерского дела - Межотраслевой научный центр (ВНИМИ) Section of roof bolting
WO2004074634A2 (en) * 2003-02-19 2004-09-02 F. M. Locotos Co., Inc. Tubular mining bolt and method
CN2656637Y (en) * 2003-10-10 2004-11-17 淄博矿业集团有限责任公司许厂煤矿 Single body upright column type temporary supporting protection device
CN101457651A (en) * 2008-11-19 2009-06-17 淮南矿业(集团)有限责任公司 Filling stack advanced support method along empty tunnel in coal-gas co-milling Y-shaped ventilating system
CN101503959A (en) * 2008-11-26 2009-08-12 枣庄矿业(集团)有限责任公司滨湖煤矿 Gob-side entry retaining support method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103696788A (en) * 2013-12-17 2014-04-02 中国神华能源股份有限公司 Abandoned roadway timbering device and construction method of fully mechanized coal mining face passed through abandoned roadway
CN103758529A (en) * 2013-12-28 2014-04-30 北京昊华能源股份有限公司 Coal mine gob-side entry retaining side supporting method
CN104806246A (en) * 2015-05-08 2015-07-29 贵州盘江精煤股份有限公司 Gob-side entry retaining method for coal mine gateway by directional-predetermined crack blasting and truncating crest and pressure relief mode
CN106053214A (en) * 2016-07-28 2016-10-26 西安工业大学 Testing apparatus for research of imposed load of bed separation to anchor pole and manufacturing method
CN107387084A (en) * 2017-09-15 2017-11-24 中国矿业大学 A kind of gob side entry retaining reduces the construction method for cutting top depth

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