CN203847126U - Island soft rock roadway retaining and protecting device in underground dynamic pressure environment of coal mine - Google Patents

Island soft rock roadway retaining and protecting device in underground dynamic pressure environment of coal mine Download PDF

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Publication number
CN203847126U
CN203847126U CN201420244876.6U CN201420244876U CN203847126U CN 203847126 U CN203847126 U CN 203847126U CN 201420244876 U CN201420244876 U CN 201420244876U CN 203847126 U CN203847126 U CN 203847126U
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CN
China
Prior art keywords
tunnel
anchor
inwall
coal mine
dynamic pressure
Prior art date
Application number
CN201420244876.6U
Other languages
Chinese (zh)
Inventor
孟益平
倪建明
郭家标
祝金龙
许帮贵
张毅
王金柱
李斌
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许帮贵
孟益平
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Application filed by 许帮贵, 孟益平 filed Critical 许帮贵
Priority to CN201420244876.6U priority Critical patent/CN203847126U/en
Application granted granted Critical
Publication of CN203847126U publication Critical patent/CN203847126U/en

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Abstract

The utility model discloses an island soft rock roadway retaining and protecting device in the underground dynamic pressure environment of a coal mine, and relates to a roadway retaining and protecting device. The device solves the problem that a soft rock roadway deforms easily. According to the island soft rock roadway retaining and protecting device in the underground dynamic pressure environment of the coal mine, anchor nets are arranged on the side and the top of the roadway; anchor rods are arranged on the anchor nets at equal intervals, and U-shaped sheds are arranged on the outer sides of the anchor nets and the bottom of the roadway at equal intervals; grouting anchor rods and anchor cables are arranged perpendicular to the inner wall of the side of the roadway and the inner wall of the top of the roadway at equal intervals. The island soft rock roadway retaining and protecting device in the underground dynamic pressure environment of the coal mine is simple in structure, convenient to construct and capable of greatly prolonging service life of the roadway.

Description

Isolated island soft rock roadway support device under dynamic pressure environment under coal mine

Technical field

The utility model relates to a kind of roadway support device, is specifically related under a kind of coal mine isolated island soft rock roadway support device under dynamic pressure environment.

Background technology

At present, under coal mine, adopt tunnel after traditional Roadway Support Technology application life shorter be two months, what the time was long is also no more than 2 years, the vicious circle of repairing again after the redeformation of rear tunnel and redeformation is repaired, repaired in tunnel after adopting general Roadway Support Technology to make tunnel under coal mine easily be absorbed in the use roadway deformation.The maintenance repeatedly in tunnel is caused on the one hand to a large amount of wastes of manpower and materials, improve the cost of production of enterprise; Also have a strong impact on the other hand the manufacturing schedule of coal mining enterprise simultaneously; Even due to be subject to appearance part, mining influence tunnel fall top or laitance coating ftracture, cause underground work personnel to form potential safety hazard.The roadway support that is particularly positioned at the weak broken isolated island body place that is subject to mining influence is more difficult, therefore how to improve tunnel especially the application life in soft rock mass tunnel be the Roadway Support Technology difficult problem that the urgent need that faces of coal production enterprise solves.

Utility model content

The purpose of this utility model is in order to overcome deficiency of the prior art, a kind of simple in structure, easy construction is provided and can have greatly improved under the coal mine in application life of tunnel isolated island soft rock roadway support device under dynamic pressure environment.

For achieving the above object, the utility model provides under a kind of coal mine isolated island soft rock roadway support device under dynamic pressure environment, and described isolated island soft-rock tunnel comprises tunnel portion of side, top, tunnel and bottom, tunnel, and described tunnel portion of side and top, tunnel arrange one deck anchor net; Online and perpendicular to the inwall of tunnel portion of side and the equidistant anchor pole that arranges of the inwall at top, tunnel, described anchor net is fixed on the inwall of tunnel portion of side and the inwall at top, tunnel by the supporting plate on anchor pole and nut at described anchor; In the anchor net outside of the inwall of tunnel portion of side and the inwall at top, tunnel and bottom, tunnel is equidistant that U-shaped canopy is set; Perpendicular to the inwall of tunnel portion of side and the equidistant grouted anchor bar that arranges of the inwall at top, tunnel; Perpendicular to the inwall of tunnel portion of side and the equidistant anchor cable that arranges of the inwall at top, tunnel.

Mesh length and wide 100mm, the 100mm of being respectively of described anchor net, the bar diameter of anchor net is 10mm; The diameter of anchor pole is 20mm, and the length of anchor pole is 2400mm, and anchor pole spacing is 700mm, and anchor pole array pitch is 700mm.

Described U-shaped canopy is 36U shaped steel, and U-shaped canopy spacing is 600mm; The diameter of described grouted anchor bar is 21.5mm, and the length of grouted anchor bar is 2000mm, and grouted anchor bar spacing is 1600mm, and grouted anchor bar array pitch is 1200mm; The diameter of described anchor cable is 17.8mm, and the length of anchor cable is 6500mm, and anchor cable array pitch is 1200mm.

The beneficial effects of the utility model: under coal mine of the present utility model, under dynamic pressure environment, isolated island soft rock roadway support apparatus structure is simple, has reduced roadway support material, cost-saving; Easy construction, saves manpower; Greatly improve the application life in tunnel, reduced roadway maintenance expense; Ensure the quick propelling of coal-face, improved coal production and benefit; Strengthen the reliability of roadway support, eliminated the potential safety hazard of roadway deformation in producing, effectively contained that coal mine roof plate accident occurs; Alleviate underground work personnel's labour intensity, improved underground work personnel's operating environment.

Below in conjunction with accompanying drawing, isolated island soft rock roadway support device under dynamic pressure environment under coal mine of the present utility model is described further.

Brief description of the drawings

Fig. 1 is the utility model coal mine roadway intersection three-switch door structural representation;

Fig. 2 is that the utility model coal mine roadway intersection four branches off door schematic diagram;

Fig. 3 is the utility model colliery isolated island soft rock roadway support top view;

Fig. 4 is the utility model colliery isolated island soft rock roadway support apparatus structure cut-away view.

In figure: 1, tunnel portion of side, 2, top, tunnel, 3, bottom, tunnel, 4, anchor net, 5, anchor pole, 6, U-shaped canopy, 7, grouted anchor bar, 8, anchor cable, 9, isolated island, 10, isolated island periphery tunnel.

Specific embodiment

As shown in Figures 1 and 2, isolated island soft-rock tunnel three-switch door and four isolated island 9 and the isolated island periphery tunnels 10 of trouble in doors under dynamic pressure environment under the coal mine of the present embodiment.As shown in Figures 3 and 4, under the coal mine of the present embodiment, under dynamic pressure environment, the isolated island soft-rock tunnel of isolated island soft rock roadway support device comprises tunnel portion of side 1, top, tunnel 2 and bottom, tunnel 3.Tunnel portion of side 1 and top, tunnel 2 arrange one deck anchor net 4.On anchor net 4 and perpendicular to the inwall of tunnel portion of side 1 and the equidistant anchor pole 5 that arranges of the inwall at top, tunnel 2, anchor net 4 is fixed on the inwall of tunnel portion of side 1 and the inwall at top, tunnel 2 by the supporting plate on anchor pole 5 and nut.Mesh length and wide 100mm, the 100mm of being respectively of anchor net 4, the bar diameter of anchor net 4 is 10mm; The diameter of anchor pole 5 is 20mm, and the length of anchor pole 5 is 2400mm, and anchor pole 5 spacing are 700mm, and anchor pole 5 array pitch are 700mm.In anchor net 4 outsides of the inwall of tunnel portion of side 1 and the inwall at top, tunnel 2 and bottom, tunnel 3 is equidistant that U-shaped canopy 6 is set, U-shaped canopy 6 is 36U shaped steel, and U-shaped canopy 6 spacing are 600mm.The rear inwall to tunnel portion of side 1 of the good U-shaped canopy 6 of frame and the inwall at top, tunnel 2 are whitewashed, and shotcrete thickness is 150mm.After inwall to tunnel portion of side 1 and the inwall at top, tunnel 2 are whitewashed, perpendicular to the inwall of tunnel portion of side 1 and the equidistant grouted anchor bar 7 that arranges of the inwall at top, tunnel 2, the slip casting water/binder ratio 0.75~1: 1 of grouted anchor bar 7, the diameter of grouted anchor bar 7 is 21.5mm, the length of grouted anchor bar 7 is 2000mm, grouted anchor bar 7 spacing are 1600mm, and grouted anchor bar 7 array pitch are 1200mm.Perpendicular to the inwall of tunnel portion of side 1 and the equidistant anchor cable 8 that arranges of the inwall at top, tunnel 2, the diameter of anchor cable 8 is 17.8mm, and the length of anchor cable 8 is 6500mm, and anchor cable 8 array pitch are 1200mm.

Therefore, under coal mine under dynamic pressure environment the inwall of tunnel portion of side 1 of isolated island soft-rock tunnel and the inwall at top, tunnel 2 and bottom 3, tunnel by mooring anchor net and frame canopy, and whitewash and slip casting, then reinforce by anchor cable, thereby make the isolated island soft-rock tunnel length of service longer.

Claims (3)

1. an isolated island soft rock roadway support device under dynamic pressure environment under coal mine, described isolated island soft-rock tunnel comprises tunnel portion of side, top, tunnel and bottom, tunnel, it is characterized in that, described tunnel portion of side and top, tunnel arrange one deck anchor net; Online and perpendicular to the inwall of tunnel portion of side and the equidistant anchor pole that arranges of the inwall at top, tunnel, described anchor net is fixed on the inwall of tunnel portion of side and the inwall at top, tunnel by the supporting plate on anchor pole and nut at described anchor; In the anchor net outside of the inwall of tunnel portion of side and the inwall at top, tunnel and bottom, tunnel is equidistant that U-shaped canopy is set; Perpendicular to the inwall of tunnel portion of side and the equidistant grouted anchor bar that arranges of the inwall at top, tunnel; Perpendicular to the inwall of tunnel portion of side and the equidistant anchor cable that arranges of the inwall at top, tunnel.
2. isolated island soft rock roadway support device under dynamic pressure environment under coal mine according to claim 1, is characterized in that, long and wide 100mm, the 100mm of being respectively of the mesh of described anchor net, and the bar diameter of anchor net is 10mm; The diameter of anchor pole is 20mm, and the length of anchor pole is 2400mm, and anchor pole spacing is 700mm, and anchor pole array pitch is 700mm.
3. isolated island soft rock roadway support device under dynamic pressure environment under coal mine according to claim 1, is characterized in that, described U-shaped canopy is 36U shaped steel, and U-shaped canopy spacing is 600mm; The diameter of described grouted anchor bar is 21.5mm, and the length of grouted anchor bar is 2000mm, and grouted anchor bar spacing is 1600mm, and grouted anchor bar array pitch is 1200mm; The diameter of described anchor cable is 17.8mm, and the length of anchor cable is 6500mm, and anchor cable array pitch is 1200mm.
CN201420244876.6U 2014-05-10 2014-05-10 Island soft rock roadway retaining and protecting device in underground dynamic pressure environment of coal mine CN203847126U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420244876.6U CN203847126U (en) 2014-05-10 2014-05-10 Island soft rock roadway retaining and protecting device in underground dynamic pressure environment of coal mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420244876.6U CN203847126U (en) 2014-05-10 2014-05-10 Island soft rock roadway retaining and protecting device in underground dynamic pressure environment of coal mine

Publications (1)

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CN203847126U true CN203847126U (en) 2014-09-24

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CN201420244876.6U CN203847126U (en) 2014-05-10 2014-05-10 Island soft rock roadway retaining and protecting device in underground dynamic pressure environment of coal mine

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105569699A (en) * 2015-12-22 2016-05-11 大同煤矿集团有限责任公司 Inclined shaft development support technology for isolated coal pillar
CN110344854A (en) * 2019-07-24 2019-10-18 辽宁工程技术大学 Press laneway support method to a kind of thump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105569699A (en) * 2015-12-22 2016-05-11 大同煤矿集团有限责任公司 Inclined shaft development support technology for isolated coal pillar
CN110344854A (en) * 2019-07-24 2019-10-18 辽宁工程技术大学 Press laneway support method to a kind of thump

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140924

Termination date: 20150510

EXPY Termination of patent right or utility model