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Conveyor gateway large-angle rotary stoping method of unequal length fully-mechanized mining working surfaces

A technology of fully mechanized mining face and transportation along the trough, which is used in ground mining, earthwork drilling, underground mining, etc., can solve the problems of unbendable coal transportation routes, large rotation angle of transportation along the trough, etc., to solve the problem of scraper conveyor. swaying effect

Inactive Publication Date: 2014-04-02
铁法煤业(集团)有限责任公司晓南矿
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Problems solved by technology

[0008] The advantages of the present invention are: using multi-section straight roadways to form arc-shaped roadways as auxiliary roadways, during the rotary mining process, the rotary mining arcs are segmented to adjust the inclination and mining, which solves the problem that the rotation angle of the transportation channel is too large and the coal transportation route cannot be bent. , forming an arc section roadway suitable for the normal advancement of the reload conveyor

Method used

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  • Conveyor gateway large-angle rotary stoping method of unequal length fully-mechanized mining working surfaces
  • Conveyor gateway large-angle rotary stoping method of unequal length fully-mechanized mining working surfaces
  • Conveyor gateway large-angle rotary stoping method of unequal length fully-mechanized mining working surfaces

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Embodiment Construction

[0014] The embodiment of the method of transporting along the groove and rotating the unequal-length fully mechanized mining face provided by the present invention is as follows:

[0015] See figure 2 , 3 , the arc-shaped auxiliary roadway is set at the corner of the L-shaped joint working face where the working face 1 and the working face 2 form an angle β of 70°-90°, and the length of the entire arc-shaped auxiliary roadway is 248m ( image 3 The two tangent points f point to point g in the middle), according to the problem that there are many equipments and cannot advance along the arc roadway, in order to meet the requirements of the L-shaped joint working face of rotary mining at 75°-90°, it is necessary to ensure the safety of the transportation equipment Smooth operation, the arc-shaped auxiliary roadway is transformed into 4 straight roadways, with a total length of 186m ( Figure 4 from point a to point e in ), plus 6 transport lanes (to the tangent point) connecte...

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Abstract

The invention discloses a conveyor gateway large-angle rotary stoping method of unequal length fully-mechanized mining working surfaces, and is characterized in that the turning part of the L-shaped working surface is provided with an arc auxiliary roadway formed by a plurality of linear roadways, wherein the rotation angle between adjacent linear roadways is 13-17 degrees; the length of each linear roadway not only exceeds the length of a transfer conveyor, but also does not exceed the maximal conveying length of a small scraper conveyor; the rotation center is subjected to secondary confirmation through rotation slope regulation, the hydraulic support is increased during the regulation process of the rotation center; the state of the scraper conveyor is regulated through the auxiliary hydraulic cylinder; and a timely top contact frame moving mode is adopted at the rotation center region of the operating surface, and maintaining is strengthened by an auxiliary supporting mode in the range of the section. According to the invention, the arc roadways are formed by a plurality linear roadways, the rotary stoping arc subsection is subjected to slope regulating and stoping, and the difficulties that the rotation angle of the conveyer gateway is over large and the coal conveying path can not be bent are solved. The rotation center is pushed appropriately, a top plate at the rotation center region is maintained greatly, and the problems that the support pushing quantity at the rotation center is less and is required to be supported repeatedly, and the top plate is difficult to maintain are solved.

Description

technical field [0001] The invention relates to an underground coal mining method, in particular to a large-angle rotary mining method for unequal-length fully-mechanized mining working faces that are transported along a trough and are jointly arranged with a running longwall fully-mechanized mining working face and an inclined longwall fully-mechanized mining working face. Background technique [0002] In coal mines, the preparation of a new mining area is to determine the working face according to the geological conditions, the mining replacement position and the established system conditions, for example, such as figure 1 As shown, according to the conventional design in the past, it is necessary to arrange the area to be mined into three working faces of the second-phase mining area (W 3 711-1,W 3 711-2,W 3 711-3 working face) and a working face in the first-phase mining area (W 3 707 working face), a total of four adjacent mining working faces need to be arranged. A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/16
Inventor 李延奎李鑫王德民金玉华胡成忠康成靳瑞刘铁臣宋文官贾东修王则行鲁连喜娄凤坡王业繁
Owner 铁法煤业(集团)有限责任公司晓南矿
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