CN202064981U - Soft coal layer roadway supporting structure - Google Patents

Soft coal layer roadway supporting structure Download PDF

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Publication number
CN202064981U
CN202064981U CN2011201421921U CN201120142192U CN202064981U CN 202064981 U CN202064981 U CN 202064981U CN 2011201421921 U CN2011201421921 U CN 2011201421921U CN 201120142192 U CN201120142192 U CN 201120142192U CN 202064981 U CN202064981 U CN 202064981U
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CN
China
Prior art keywords
lane
roadway
anchor
anchor cable
supporting
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CN2011201421921U
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Chinese (zh)
Inventor
张文斌
金庆东
田志勇
李淑峰
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山西晋城无烟煤矿业集团有限责任公司
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Priority to CN2011201421921U priority Critical patent/CN202064981U/en
Application granted granted Critical
Publication of CN202064981U publication Critical patent/CN202064981U/en

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Abstract

The utility model relates to a coal mine roadway supporting structure, in particular to a soft coal layer roadway supporting structure. The problem that a roadway in a soft coal layer cannot be effectively supported is solved. The soft coal layer roadway supporting structure comprises a roadway top plate and a roadway upper. The top plate is of a supporting structure that: the top plate is protected by a metal net and is fixed by top plate anchor rods and top plate anchor cables through W-shaped steel bands, wherein the top plate anchor rods are respectively positioned on the two sides of the top plate; the top plate anchor cables are positioned in the middle of the top plate; and both the top plate anchor rods and the top plate anchor cables are linearly arrayed in the transverse direction and the longitudinal direction. The roadway upper is of a supporting structure that: the roadway upper is supported by a steel plastic upper-protecting net and fixed by a W-shaped steel band, roadway upper anchor rods and roadway upper anchor cables, wherein both the roadway upper anchor rods and the roadway upper anchor cables are linearly arrayed in the transverse direction and the longitudinal direction. Compared with the prior art, the soft coal layer roadway supporting structure has the beneficial effects that: through the improvement of supporting structure ways, the reliability of circularly using the roadway in the soft coal layer in a mine area is greatly improved. Accidents caused by deformation of the roadway are reduced and the safety of underground production is ensured.

Description

Soft seam roadway support structure

Technical field

The utility model relates to a kind of colliery tunnel support mode, is specially a kind of soft seam roadway support structure.

Background technology

Three-soft seam refers to run in the coal mining: characteristics are soft roof strata, soft main mining coal seam and soft seat earth rock stratum.Generally speaking, coal seam, colliery and the roof and floor with three soft features is soft stratum.Cracks in coal seam is grown, and complex structure is so must carry out effective support to the coal seam.

The design principle of existing coal roadway support is according to the coal seam different attribute, differently press the source, start with from analyzing ground pressure activity basic law, the application message method for designing, make the active state of the continuous suitable for surrounding rock distortion of support system and construction technological process, to reach the distortion of control cherry coal, safeguard the purpose of stability of the roadway.The combined support system that the structural formula that recycling weak seam roadway support is adopted at present utilizes High strength bolt, reinforcing bar joist, steel-plastic composite net, anchor cable to form.Roof timbering adopts reinforcing bar joist, anchor pole, anchor pole array pitch 1m, 6 of every rows, and spacing 0.9m, anchored force are not less than 100KN, pre-fastening moment is not less than 120N m, anchor rod/anchor rope is arranged along center line, reject 2m, spacing 1.7m, anchor cable design pretightning force are not less than 110KN, 50 * 50mm, and steel-plastic net protects the top; Roadside support adopts reinforcing bar joist, anchor pole, anchor pole array pitch 1m, 3 of every rows, and spacing 1.1m, anchored force are not less than 100KN, and pre-fastening moment is not less than 120N m, 40 * 40mm, the plastic wire wall supporting.The intake supporting is identical with the return aircourse supporting.

The problem that above-mentioned supporting coal petrography tunnel structure runs in practice: with Shanxi coal group ore deposit actual conditions is case, the northern geological conditions overall stability of this mine, but local section, cherry coal, joints development, the top board condition is poor, brings difficulty for the maintenance in recycling lane.Along with the production-scale further expansion of mine, the extension in tunnel, grade influences to be subjected to that stope is adopted, safeguards for recycling back and lane group and causes great difficulty.The pressure that the quickening of tunnelling speed, digging laneway are subjected to is bigger, and roadway deformation is serious, has influenced construction speed.This support system is being the comparison difficulty aspect the weak seam roadway support.This mine the north changes support system according to the rule that support system and construction technological process constantly adapt to the active state of coal seam deformation.Roadway workface is that three lanes are arranged, the return airway of existing mining face later will be as the air intake lane of next work plane in back production.It is 3 parallel drivings of crossheading that III 2305 is adopted face, continuous propelling along with 2305 of III, intrinsic 1 is stayed and establishes and multiplexing return aircourse is adopted and destroyed, wherein III 2210, III 2209 lanes cave in fully, can not utilize, and crush in III 2212 lanes, wall caving is serious, after contiguous III 2306 back production begin,, constantly safeguard the back production that could guarantee III 2306 caving coals because the secondary dynamic pressure is serious.Run into the problem of recycling roadway maintenance difficulty in the exploitation process, press observation according to the ore deposit to the fully mechanized coal face stoping period, roadway workface pressure after back production manifests fierceness.Stable gradually behind the back production dynamic pressure hysteresis work plane 300-500m, dynamic pressure influence the form of expression for much crush, the fracture of coal wall caving anchor cable, group's anchor pole pallet is torn, promptly influencing production increases potential safety hazard again.

Summary of the invention

The utility model provides a kind of soft seam roadway support structure for the problem that solves tunnel effective support in the soft seam.

The utility model is realized by following technical scheme, the utility model is realized by following technical scheme, and a kind of soft seam roadway support structure comprises back and lane group, roof support structure is that wire lath protects the top, roofbolt, the top board anchor cable, the W-shaped steel band is fixed, roofbolt (lays respectively at the top board both sides, the top board anchor cable is positioned at the top board middle part, and roofbolt, and the top board anchor cable laterally reaches vertically all arranged in a straight line; The roadside support structure is that steel is moulded the supporting of wall supporting net, W-shaped steel band, lane group anchor pole, lane group anchor cable is fixed, and lane group anchor pole, lane group anchor cable vertical and horizontal are arranged in a straight line.

Compared with prior art, the beneficial effects of the utility model are by the transformation of supporting and protection structure mode, greatly to have improved the reliability in the recycling tunnel of soft seam, mine district.Reduced because the accident that roadway deformation causes has been guaranteed the safety of downhole production.Strengthen the supporting of tunnel weak seam top board and lane group, promptly reduced daily maintenance cost, accelerated roadway construction speed again, reduced the influence that recycling roadway deformation is produced whole stope, can reduce recycling roadway maintenance expense, can dig a charging, air intake lane less again simultaneously, save investment more than 300 ten thousand, obtain maximum output with minimum input, can bring maximum economic benefits.

Description of drawings

Fig. 1 is a soft seam back structural representation

Fig. 2 is lane, a soft seam tunnel group structural representation

Fig. 3 is a soft seam tunnel structure schematic diagram.

Among the figure: 1-roofbolt, 2 top board anchor cables, 3-W shape steel band, 4-wire lath, 5-top board anchor cable, 6-roofbolt, 7-lane group anchor cable, 8-lane group anchor pole, 9-lane group anchor pole, 10-W shape steel band, 11-lane group anchor pole, 12-steel are moulded wall supporting net, 13-lane group anchor pole, 14-lane group anchor cable, 15-top board, 16-lane group, 17-lane group.

The specific embodiment

A kind of soft seam roadway support structure as schematically shown in Figure 3, comprises back 15 and lane group 16,17, adopts High strength bolt, W steel band, steel-plastic composite net, wire lath, anchor cable combined supporting mode; As schematically shown in Figure 1, roof support structure is that wire lath 4 protects the top, roofbolt 1,6, top board anchor cable 2,5, W-shaped steel band 3 is fixing, roofbolt 1,6 lay respectively at the top board both sides, top board anchor cable 2,5 are positioned at the top board middle part, and roofbolt, the top board anchor cable laterally reaches vertically all arranged in a straight line, roofbolt is provided with specification, front and rear row is apart from 1m, 2 of every rows, and top board anchor cable 5 is arranged along the tunnel center line, front and back reject 1m, 3 of every rows, every row longitudinal pitch 1.1m, W-shaped steel band 3 transversely direction is fixing with wire lath 4, roofbolt 1,6, top board anchor cable 2,5 fix W-shaped steel band 3 jointly; As schematically shown in Figure 2, the roadside support structure is that steel is moulded 12 supportings of wall supporting net, W-shaped steel band 10, lane group anchor pole 8,9,11,13, lane group anchor cable 7,14 is fixing, lane group anchor pole, lane group anchor cable vertical and horizontal are arranged in a straight line, front and rear row is apart from 1m, both sides are lane group anchor pole 9 up and down, 13, middle is that anchor cable 7 is helped in the lane, 14 and lane group anchor pole 8,11, front and rear row is arranged alternately, anticipate as shown in FIG., in same row, lane group's anchor pole 7 and lane group anchor cable 11 respectively have one, in same row, lane group's anchor pole 7 and lane group anchor cable 8 arranged alternate, longitudinal pitch 0.8m, W-shaped steel band 10 is moulded wall supporting net 12 along vertical direction with steel, lane group anchor pole, lane group anchor cable is fixed the W-shaped steel band 10 times." row " described in the present embodiment reaches " laterally ", is the direction vertical with the tunnel; " row " reach " vertically " is the direction parallel with the tunnel.

?[0012]?

Claims (4)

1. soft seam roadway support structure, comprise back (15) and lane group (16,17), it is characterized in that: roof support structure is that wire lath (4) protects the top, roofbolt (1,6), top board anchor cable (2,5), top W-shaped steel band (3) is fixing, roofbolt (1,6) lays respectively at the top board both sides, top board anchor cable (2,5) is positioned at the top board middle part, and roofbolt (1,6), and top board anchor cable (2,5) laterally reaches vertically all arranged in a straight line; The roadside support structure is that steel is moulded wall supporting net (12) supporting, W-shaped steel band (10), lane group anchor pole (8,9,11,13), and lane group's anchor cable (7,14) is fixing, and lane group anchor pole, lane group anchor cable vertical and horizontal are arranged in a straight line.
2. soft seam roadway support structure according to claim 1, it is characterized in that: roofbolt (1,6) is provided with specification, front and rear row is apart from 1m, 2 of every rows, top board anchor cable (5) arranges that along the tunnel center line front and back reject 1m, 3 of every rows, transversely direction is fixing with wire lath (4) for spacing 1.1m, W-shaped steel band (3) between every row, and roofbolt (1,6), top board anchor cable (2,5) are fixed W-shaped steel band (3) jointly.
3. soft seam roadway support structure according to claim 1, it is characterized in that: both sides are lane group anchor pole (9,13) up and down, middle is lane group's anchor cable (7,14) and lane group anchor pole (8,11), and the lane helps anchor pole, anchor cable front and rear row apart from 1m, and front and rear row is arranged alternately.
4. soft seam roadway support structure according to claim 3, it is characterized in that: in same row, lane group's anchor pole (7) and lane group's anchor cable (11) respectively have one, in same row, lane group anchor pole (8) and lane group anchor cable (7) arranged alternate, longitudinal pitch 0.8m, W-shaped steel band (10) mould wall supporting net (12), lane group anchor pole, lane along vertical direction with steel and help anchor cable to fix under the W-shaped steel band (10).
CN2011201421921U 2011-05-07 2011-05-07 Soft coal layer roadway supporting structure CN202064981U (en)

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Application Number Priority Date Filing Date Title
CN2011201421921U CN202064981U (en) 2011-05-07 2011-05-07 Soft coal layer roadway supporting structure

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Application Number Priority Date Filing Date Title
CN2011201421921U CN202064981U (en) 2011-05-07 2011-05-07 Soft coal layer roadway supporting structure

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102733836A (en) * 2012-07-05 2012-10-17 大同煤矿集团有限责任公司 Roadway support method for fully mechanized caving mining of weak extra-thick coal seam
CN102865092A (en) * 2012-09-22 2013-01-09 山西晋城无烟煤矿业集团有限责任公司 U+U type laneway ventilating system of coalface
CN103075165A (en) * 2013-01-10 2013-05-01 中国矿业大学(北京) Composite supporting method of vertical beam of coal road
CN103233751A (en) * 2013-05-07 2013-08-07 中国矿业大学 Double-layer anchoring and balancing arch supporting system for coal roadway with extremely-weak top plates
CN103277124A (en) * 2013-06-06 2013-09-04 武汉科技大学 Anchor-rod-combined supporting method for high-sulfur crush rock mine
CN103362519A (en) * 2013-01-31 2013-10-23 中国矿业大学(北京) Safe and quick coal roadway tunneling method
CN103422869A (en) * 2013-08-22 2013-12-04 山东科技大学 Jet grouting and anchoring comprehensive construction method of soft rock tunnel
CN103670470A (en) * 2013-12-31 2014-03-26 大同煤矿集团有限责任公司 Full coal roadway safe and speedy drivage supporting method
CN103883340A (en) * 2014-02-26 2014-06-25 山东科技大学 Mining anchoring steel belt and roadway top plate anchor rod supporting method
CN104879150A (en) * 2014-12-31 2015-09-02 龙口矿业集团有限公司 Anchor cable support method for deep soft rock roadway without stable rock stratum
CN105604591A (en) * 2016-03-16 2016-05-25 重庆工程职业技术学院 Supporting method and structure for coal seam group
CN105626095A (en) * 2015-12-29 2016-06-01 大同煤矿集团有限责任公司 Small coal pillar protection roadway surrounding rock support method under condition of coal seam group mining hard roof
CN106089238A (en) * 2016-08-19 2016-11-09 淮南矿业(集团)有限责任公司 A kind of high seam driuing along goaf support system
CN106837386A (en) * 2017-02-17 2017-06-13 淮矿西部煤矿投资管理有限公司 A kind of ultra thick coal bed fully mechanized amplification anti-risk topmast protection structure of span stope drift active workings
CN111088989A (en) * 2019-12-12 2020-05-01 大同煤矿集团有限责任公司 Gob-side entry driving surrounding rock control method for fully mechanized caving section of extra-thick coal seam

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102733836A (en) * 2012-07-05 2012-10-17 大同煤矿集团有限责任公司 Roadway support method for fully mechanized caving mining of weak extra-thick coal seam
CN102865092A (en) * 2012-09-22 2013-01-09 山西晋城无烟煤矿业集团有限责任公司 U+U type laneway ventilating system of coalface
CN103075165A (en) * 2013-01-10 2013-05-01 中国矿业大学(北京) Composite supporting method of vertical beam of coal road
CN103075165B (en) * 2013-01-10 2015-09-02 中国矿业大学(北京) Vertical beam of coal road combined type supporting method
CN103362519A (en) * 2013-01-31 2013-10-23 中国矿业大学(北京) Safe and quick coal roadway tunneling method
CN103362519B (en) * 2013-01-31 2015-06-03 中国矿业大学(北京) Safe and quick coal roadway tunneling method
CN103233751A (en) * 2013-05-07 2013-08-07 中国矿业大学 Double-layer anchoring and balancing arch supporting system for coal roadway with extremely-weak top plates
CN103233751B (en) * 2013-05-07 2015-06-17 中国矿业大学 Double-layer anchoring and balancing arch supporting system for coal roadway with extremely-weak top plates
CN103277124B (en) * 2013-06-06 2015-03-25 武汉科技大学 Anchor-rod-combined supporting method for high-sulfur crush rock mine
CN103277124A (en) * 2013-06-06 2013-09-04 武汉科技大学 Anchor-rod-combined supporting method for high-sulfur crush rock mine
CN103422869A (en) * 2013-08-22 2013-12-04 山东科技大学 Jet grouting and anchoring comprehensive construction method of soft rock tunnel
CN103670470A (en) * 2013-12-31 2014-03-26 大同煤矿集团有限责任公司 Full coal roadway safe and speedy drivage supporting method
CN103883340A (en) * 2014-02-26 2014-06-25 山东科技大学 Mining anchoring steel belt and roadway top plate anchor rod supporting method
CN104879150A (en) * 2014-12-31 2015-09-02 龙口矿业集团有限公司 Anchor cable support method for deep soft rock roadway without stable rock stratum
CN105626095A (en) * 2015-12-29 2016-06-01 大同煤矿集团有限责任公司 Small coal pillar protection roadway surrounding rock support method under condition of coal seam group mining hard roof
CN105604591A (en) * 2016-03-16 2016-05-25 重庆工程职业技术学院 Supporting method and structure for coal seam group
CN106089238A (en) * 2016-08-19 2016-11-09 淮南矿业(集团)有限责任公司 A kind of high seam driuing along goaf support system
CN106837386A (en) * 2017-02-17 2017-06-13 淮矿西部煤矿投资管理有限公司 A kind of ultra thick coal bed fully mechanized amplification anti-risk topmast protection structure of span stope drift active workings
CN106837386B (en) * 2017-02-17 2019-05-14 淮矿西部煤矿投资管理有限公司 A kind of ultra thick coal bed fully mechanized anti-risk topmast protection structure of amplification span stope drift active workings
CN111088989A (en) * 2019-12-12 2020-05-01 大同煤矿集团有限责任公司 Gob-side entry driving surrounding rock control method for fully mechanized caving section of extra-thick coal seam

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20111207

Termination date: 20170507