CN201262097Y

CN201262097Y - Coal mine down-hole block-resistant producing area coal bunker

Info

Publication number: CN201262097Y
Application number: CNU2008200266819U
Authority: CN
Inventors: 刘玉果; 于传明; 张磊鑫; 孙常军; 秦立伦; 王敏; 李长录
Original assignee: SHANDONG HUAHENG MINE CO Ltd
Current assignee: SHANDONG HUAHENG MINE CO Ltd
Priority date: 2008-08-05
Filing date: 2008-08-05
Publication date: 2009-06-24
Anticipated expiration: 2018-08-05

Abstract

The utility model discloses a coal mine downhole clogging-prevention mining district coal bunker, which comprises a downhole coal bunker body with a volume of 1,000 tones and a round section. The lower necking openings are double-tunnel type bunker openings; each lower necking opening has a hyperbolic curve-shaped necking opening; a high-pressure water pipe is pre-buried on the periphery of the lower necking opening; and the inner wall surface of the coal bunker is supported via an anchor rod, a metal mesh and concrete. The mining district coal bunker has the advantages of large volume, low clogging liability of the lower necking openings, high support strength, shock resistance, no collapse of coal wall.

Description

Block-resistant type district coal bin under the coal mine

Technical field

The utility model relates to the colliery gate road bunker.

Background technology

In coal production process, district coal bin must be arranged in each exploiting field.Along with the raising of mining machinery degree, the pit mining scope is increasing, and the exploiting field strike length is more and more longer, and exploiting field production capacity more and more higher is also more and more longer to the transportation range of mine shaft coal pocket from district coal bin.

The general design capacity of past district coal bin is 200～300 tons; The coal bunker support form is spray of anchor net or concreting supporting; Following reducing is the straight line reducing, single Hatch Opening.Mainly there is the following aspects problem in conventional district coal bin:

1, the district coal bin capacity is less, and capacity is generally less than the output of a circulation of a work plane, in case main haulage roadway overhauls or goes wrong, just causes the exploiting field to stop production, and the district coal bin of low capacity seriously restricts production.

2, supporting intensity is little, easily wall caving.Along with continuing to increase of the pit mining degree of depth, mine pressure is increasing, because supporting intensity is on the low side, coal flows down drop impact, often causes coal bunker wall caving, stifled storehouse, even causes coal bunker to use, and has a strong impact on the safety in production of mine.

3, because stifled storehouse difficulty is handled in the existence of stifled storehouse phenomenon, dangerous.Often occur stifled storehouse phenomenon in process of production, adopt the stifled storehouse accident of handling of blowing out usually, dangerous big, gently then destroy the coal bunker bulkhead, blow up funnel, heavy then the personal safety accident takes place, potential safety hazard is many.

The existence of above problem makes the practice of high-yield and high-efficiency construction of coal mine be subjected to serious restriction, and is unfavorable for safety in production, for addressing the above problem, now proposes a kind of big capacity, anti-blocking district coal bin.

Summary of the invention

Have the technical problem that coal bunker exists now for solving, the utility model provides big, the difficult stifled storehouse of a kind of capacity, the stifled storehouse of processing to be easy to district coal bin.

The technical solution of the utility model is: it comprises the coal bunker body of the circular cross section of volume more than 1000 tons of a down-hole developing, it is characterized in that: two funneling Hatch Openings are adopted in reducing under the coal bunker body; Each is the reducing pattern of reducing employing hyperbola down; Pre-buried high-pressure water pipe around following reducing is convenient to handle stifled storehouse with water under high pressure; Coal bunker body internal face employing anchor pole adds wire lath and adds concrete combined support form.

The utility model good effect is:

1, because capacity is big and adopt two funneling Hatch Openings to design, the accumulating ability is increased, adapt to the needs of large-scale mine.2, because following reducing is a hyperbola, be difficult for resulting in blockage.3, because pre-buried high-pressure water pipe, can be directly with the stifled storehouse of down-hole high pressure water treatment, handling safety is not destroyed coal bunker funnel.4, owing to adopt the combined supporting pattern, supporting intensity is big, and is shock-resistant, and the wall caving phenomenon does not take place.

Description of drawings

Fig. 1 is that the district coal bin of the embodiment of the invention is arranged schematic top plan view;

Fig. 2 is A-A sectional view of Fig. 1; Only show down the shape of reducing among the figure;

Fig. 3 is B-B sectional view of Fig. 1; Only show the arrangement form of the two funnels of two Hatch Openings among the figure;

Marginal data: 1---coal bunker body; 2---reducing under the coal bunker; 3---anchor pole; 4---wire lath; 5---high-pressure water pipe; 6---girder steel; 7---concrete; 8---the bend arrangement of reinforcement; 9---blow out gate; 10---mining roadway.

The specific embodiment

As Fig. 1, Fig. 2, shown in Figure 3: district coal bin body 1 is that an excavation is built in the height 30～40m at mining roadway 10 tops, the circular well body of diameter 6m, and bulkhead adopts anchor pole 3 to add wire lath 4 and concrete seven combined supporting form.Two funneling Hatch Openings are adopted in the following reducing 2 of coal bunker 1, and each Hatch Opening is the rectangle Hatch Opening; Hyperbolic shape is adopted in following reducing 2, Hatch Opening is supported by girder steel 6, put coal gate 9 by girder steel 6 installations, supporting and protection structure is with relayable rail prewire hyperbolic shape, as reducing bend arrangement of reinforcement 8 under the coal bunker, bend arrangement of reinforcement 8 arranged props up template placing of concrete 7 again after putting, during pouring coagulation 7 under coal bunker even pre-buried six roots of sensation high-pressure water pipe 5 around the reducing 2.

Claims

1, block-resistant type district coal bin under a kind of coal mine, it comprises the coal bunker body of the circular cross section of volume more than 1000 tons of a down-hole developing, it is characterized in that: two funneling Hatch Openings are adopted in reducing under the coal bunker body; Each is the reducing pattern of reducing employing hyperbola down; Pre-buried high-pressure water pipe around following reducing; Coal bunker body internal face employing anchor pole adds wire lath and adds concrete combined support form.