CN201170104Y

CN201170104Y - Top board support component in fully mechanized caving face ending

Info

Publication number: CN201170104Y
Application number: CNU2008200765272U
Authority: CN
Inventors: 安火宁; 李建国; 吉敦云; 孟海龙; 晁先会; 郑志新
Original assignee: Shanxi Lanhua Sci Tech Venture Co Ltd
Current assignee: Shanxi Lanhua Sci Tech Venture Co Ltd
Priority date: 2008-03-12
Filing date: 2008-03-12
Publication date: 2008-12-24
Anticipated expiration: 2018-03-12

Abstract

The utility model relates to a support device for mining, in particular to a roof support member for use in the ending of a fully mechanized caving face. The roof support is to solve the problems that the roof for use in the ending of the prior mechanized caving face adopts an anchor web and a wooden plate girder support so that wooden materials are consumed, the compression strength is low, and potential safety hazard exists during the operation of a worker. The device comprises wire nettings, an anchor rod and an anchor rope, wherein the wire nettings are overlapped mutually to be laid on the lower side of the roof, and the anchor rod and the anchor rope are arranged at intervals. Wire ropes are also laid at intervals on the lower side of the wire nettings. The wire ropes and the wire nettings are connected at a distance by net connecting wires. A continuous support zone is formed so that the bearing strength of the roof is improved, the subsidence of the roof is effectively controlled, and a safe prop pulling space is created. At the same time, the wire ropes are used as flexible support members so that the insecurity hidden danger during the operation of a worker under a large area hollow top when a wooden plate girder is arranged is effectively avoided. The consumption of wooden material is reduced, and the labor intensity of the work is reduced. Furthermore, the cost of the wire rope is very low so that a large amount of material expense is saved. The device has a certain popularization value.

Description

Roof timbering member in the fully mechanized coal face ending

Technical field

The utility model relates to mining suspension device, is specially roof timbering member in a kind of fully mechanized coal face ending.

Background technology

Can known, fully mechanized coal face removal of home be the too many levels sex work of a technical strong and more complicated, be directly connected to a mine and finish normal production and take over, realize stable yields, efficient.Yet, in the middle of real work, top board (coal) when exploitation with adopting with falling, very easily broken, stop production and remove inbreak thereupon behind the frame, so be difficult to safeguard when removing frame.Adopt the back top board and be equivalent to semi girder for working face wall, semi girder one end pressure concentrates on work plane and stops adopting the line rib, causes coal wall caving, even local roof delamination, loses integrality; The other end of semi girder acts on goaf top plate and emits on the coal petrography that falls, and makes to emit the coal petrography compacting gradually that falls.What really play a supporting role during this period is hydraulic support, so hydraulic support is along with the sinking of top board and the continuity of time and produce down and contract, when deflection surpasses the breaking limit of rock, top board is that fulcrum produces the step sinking with the rib, lose globality, post-rift rock weight acts on the support fully, causes the rack restoring difficulty, has a strong impact on the removal of home progress of fully mechanized coal face.

Problem at removing supporters difficulty under the above-mentioned breaking roof (coal), common way is to adopt bolting with wire mesh at present, below wire lath, lay simultaneously timber plate girder, solved an above-mentioned difficult problem to a certain extent, but also there is following problem, the one, consumed a large amount of timber, and timber plate girder cost height, 1 cubic metre about 1100 yuan; The 2nd, timber plate girder compressive strength is low; The 3rd, the workman needs repeatedly the lifting hydraulic support to come the timber boarding beam in operating process, has certain potential safety hazard; The 4th, timber plate girder can't form a continuous protecting band when supporting.

Summary of the invention

The utility model adopts anchor net and timber plate girder supporting to exist to consume a large amount of timber in order to solve in the existing fully mechanized coal face ending top board, compressive strength is low, and there is the problem of certain potential safety hazard when operating in the workman, and roof timbering member in a kind of fully mechanized coal face ending is provided.

The utility model is to adopt following technical scheme to realize: roof timbering member in the fully mechanized coal face ending, comprise mutual lapped layup in the wire lath of top board below and anchor pole, the anchor cable that is provided with at interval, the wire lath below also is equipped with the wire rope that is parallel to work plane at interval.The utility model replaces to beformable body material wire rope with timber plate girder on the basis of original support unit, through mechanical analysis, can satisfy fully and protect the safety requirements that frame is removed on the top.The area of described single piece of metal net, quantity, the distribution situation of anchor pole, anchor cable and the spacing distance of wire rope, thickness etc. determine that by the actual conditions of top board this is that those of ordinary skill in the art is easy to realize.

Be connected by the networking silk every a segment distance between described wire rope and the wire lath, so that whole support system is more firm.

Compared with prior art, the utlity model has following advantage: adopt the anchor nettle to unite and protect the top ending, the change passive protecting is active support, make top board (coal) form the continuous composite beam that a plurality of fulcrums constitute, improved the bearing strength of top board (coal), effectively control the sinking of top board (coal), guaranteed to remove the height of frame passage; And, make top board (coal) smooth at continuous protecting band of cover frame trigonum formation, created safe prop drawing space; Simultaneously with wire rope as the beformable body support unit, the hidden danger of workman's operation under the empty top of large tracts of land when effectively having avoided the timber boarding beam, reduced lumber consumption, improved the frame speed of removing, created the working environment of safety and Health, alleviate labor strength, improved the running rate of equipment; And the cost of wire rope is extremely low, has saved the wide variety of materials expense, has obtained good economic benefit, has certain popularization value.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is a user mode schematic diagram of the present utility model

Among the figure: 1-top board 2-wire lath 3-anchor pole 4-anchor cable 5-wire rope 6-hydraulic support

The specific embodiment

Roof timbering member in the fully mechanized coal face ending comprises mutual lapped layup in the wire lath 2 of top board 1 below and anchor pole 3, the anchor cable 4 that is provided with at interval, and wire lath 2 belows also are equipped with the wire rope 5 that is parallel to work plane at interval; Be connected by the networking silk every a segment distance between wire rope 5 and the wire lath 2.

During concrete enforcement, wire lath adopts the rhombus net of 8# galvanized wire braiding, the diameter of wire rope is not less than 12.5mm, and the anchor pole diameter is the vertical muscle screw-thread steel of the left-handed nothing of 22mm, and the anchor cable diameter is the steel strand of 15.24mm, every anchor pole is rolled up the anchoring agent with two, each volume of double speed and middling speed, every anchor cable is rolled up the anchoring agent with three, two volume double speeds, one volume middling speed, networking silk 14# galvanized wire.It is lapping-networking-shop wire rope-temporary lining-beat anchor pole (anchor cable) that the anchor nettle is united the technological process of protecting the top, in lapping at laying wire rope off the net, wire rope is parallel to work plane and lays, the shop being aligned, wire rope and wire lath are twisted two circle semijoins once every 200mm with bifilar galvanized wire, wire rope spacing 600mm.

In the real work, use timber plate girder to protect the top ending and remove frame and need 25 days, adopt the anchor nettle to unite to protect the top ending to remove frame and only finished with 18 days, removal of home has been shortened 7 days, 5.6 ten thousand yuan of saving labour costs, and economical with materials is taken 12.3 ten thousand yuan, remarkable in economical benefits.

Claims

1, roof timbering member in a kind of fully mechanized coal face ending, comprise mutual lapped layup in the wire lath (2) of top board (1) below and anchor pole (3), the anchor cable (4) that is provided with at interval, it is characterized in that wire lath (2) below also is equipped with the wire rope (5) that is parallel to work plane at interval.

2, roof timbering member in the fully mechanized coal face according to claim 1 ending is characterized in that between wire rope (5) and the wire lath (2) thread being connected by networking every a segment distance.