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

Info

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
Authority
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
Original Assignee
许帮贵
孟益平
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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

Links

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)

Publication Number Publication Date
CN203847126U true CN203847126U (en) 2014-09-24

Family

ID=51560160

Family Applications (1)

Application Number Title Priority Date Filing Date
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

Country Status (1)

Country Link
CN (1) CN203847126U (en)

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

Similar Documents

Publication Publication Date Title
WO2018133492A1 (en) Non-uniform support structure for gob-side entry driving under deep unstable overburden rock and construction method
CN101514633B (en) Non-roadside supporting gob-side entry retaining process
AU2013354613B2 (en) Method of local filling to control surface subsidence in worked-out area
CN203756182U (en) Support structure applied to shallow road tunnel in weak rock area
CN204691789U (en) A kind of adjustable tunnel support structure
CN102296976B (en) Asymmetrical bolt-net-cable combined supporting method for special-shaped recovery tunnel of large inclination angle coal bed
CN103696803B (en) A kind of for mine down-hole tailing cemented filling barricade device
CN101280684A (en) Goaf surrounding rock around gob-side supporting method under three soft geological condition
CN103075165B (en) Vertical beam of coal road combined type supporting method
CN105178981A (en) Total-section closed type deep-shallow coupling yielding, bolting-grouting and supporting method for incompact and fractured soft-rock roadway
CN109681248B (en) Advanced support method for grouting anchor cable
CN102562093B (en) Full-length anchoring supporting method with intensive resin anchor rod and anchor-shotcrete net
CN205532656U (en) Deep well weak surrounding rock roadway support device
CN103670470B (en) Full coal roadway safe and speedy drivage supporting method
CN102383806A (en) Construction technology for allowing tunnel to pass through ultra-large karst cave
CN202882943U (en) Yielding type restrained concrete arc frame high-strength three-dimensional supporting and protecting system
CN102852534B (en) Quantitative yielding node applicable to underground engineering support lagging jack
CN102720498B (en) Gob-side entry retaining mining process for coal face
CN102425438A (en) Supporting method of laneway under multiple goafs in ultra-close coal seam group
CN205329688U (en) Resistance -increasing slip casting stock
CN102337903B (en) Method of active coupling support in time and space for control of minimum deformation of surrounding rock of deep well roadway
CN204402520U (en) A kind of coal mine down-hole tunnel boring head provisional protection net
CN202215249U (en) Layering pack wall along for hollow entry retaining in solid filling coal mining
CN103821167A (en) Construction method for subway station body
CN107288653A (en) A kind of the benching tunnelling method excavation supporting structure of weak surrounding rock large cross-section tunnel double -side approach three and construction method

Legal Events

Date Code Title Description
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