Skip-mining type wangeviry stope branch roadway filling and coal mining method

Abstract

A transportation main roadway and stope branch roadways are arranged by adopting a wangeviry coal mining method. A plurality of stope branch roadways are divided into multiple mining stages, based on which the stope branch roadways are skip-mined; and coal pillars are not reserved among the stope branch roadways. The transportation main roadway is a main transportation channel, and the stope branch roadways are coal mining roadways. All the stope branch roadways are sequentially stoped in a skip-mining manner according to the designed mining sequence and are sequentially and timely filled. The coal never stoped or the filled stope branch roadways is/are used as supports for controlling roofs at the two sides of the stope branch roadways, and the stope branch roadways are sequentially stoped according to a plurality of mining stages, and finally the coal pillar-free mining is realized.

Claims

1. A skip-mining type wangeviry stope branch roadway filling and coal mining method, comprising the following steps: a. at a terminal of a coal mining working face, from a centralized transportation roadway towards an air return roadway, tunneling an inclined transportation main roadway in communication with the air return roadway, with an exit of the transportation main roadway in communication with the air return roadway being disposed in the middle of the coal mining working face; b. dividing a plurality of coal bodies at the left and right sides of the transportation main roadway into multiple stope branch roadways opposite orthogonally by strip mining, according to a geological condition of a surrounding rock of a mining area; c. allocating the multiple stope branch roadways opposite orthogonally into multiple mining stages, and mining a first one of the multiple stope branch roadways allocated in a first mining stage at first, comprising mining from the transportation main roadway at one side of the air return roadway towards a first transverse stope branch roadway on the left, and then filling the first transverse stope branch roadway immediately after the mining, next, mining from the transportation main roadway towards a first longitudinal stope branch roadway on the right, and then filling the first longitudinal stope branch roadway immediately after the mining; d. mining each of the first stope branch roadways in a next mining stage sequentially, comprising mining from the transportation main roadway towards the first transverse stope branch roadway in the next mining stage on the left, and then filling the first transverse stope branch roadway immediately after the mining; next, mining from the transportation main roadway towards the first longitudinal stope branch roadway in the next mining stage on the right, and then filling the first longitudinal stope branch roadway immediately after the mining, until the each of the first stope branch roadways allocated in all mining stages are mined and filled; e. mining a second stope branch roadway in the first mining stage, comprising mining from the transportation main roadway towards a second transverse stope branch roadway in the first mining stage on the left, and then filling the second transverse stope branch roadway immediately after the mining, next, mining from the transportation main roadway towards a second longitudinal stope branch roadway in the first mining stage on the right, and then filling the second longitudinal stope branch roadway immediately after the mining; f. mining the second stope branch roadway in the next mining stage sequentially, comprising mining from the transportation main roadway towards the second transverse stope branch roadway in the next mining stage on the left, and then filling the second transverse stope branch roadway immediately after the mining, next, mining from the transportation main roadway towards the second longitudinal stope branch roadway in the next mining stage on the right, and then filling the second longitudinal stope branch roadway immediately after the mining, until the second stope branch roadways in all mining stages are mined and filled; g. repeatedly, mining a next stope branch roadway in the next mining stage sequentially, comprising mining from the transportation main roadway towards a next transverse stope branch roadway in the next mining stage on the left, and then filling the next transverse stope branch roadway immediately after the mining; next, mining from the transportation main roadway towards a next longitudinal stope branch roadway in the next mining stage on the right, and then filling the next longitudinal stope branch roadway immediately after the mining, until all stope branch roadways allocated in all mining stages are mined and filled; and h. filling the transportation main roadway after all stope branch roadways allocated in the all mining stages have been mined and filled.

2. The skip-mining type wangeviry stope branch roadway filling and coal mining method according to claim 1, wherein, the transportation main roadway has a width of substantially 5 m to 6 m, and each of; the stope branch roadways has a width greater than or equal to 3.3 m and has a length of substantially 5 m to 150 m.

Description

DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a schematic diagram of the mining and filling sequence for the first stope branch roadways allocated in all mining stages in the present invention.

(2) FIG. 2 is a schematic diagram of the mining and filling sequence for the second stope branch roadways allocated in all mining stages in the present invention.

(3) FIG. 3 is a schematic diagram of the mining and filling sequence for the third stope branch roadways allocated in all mining stages in the present invention.

(4) FIG. 4 is a schematic diagram of the mining and filling sequence for the fourth stope branch roadways allocated in all mining stages in the present invention.

(5) FIG. 5 is a schematic diagram illustrating the situation after all stope branch roadways allocated in all mining stages are mined and filled in the present invention.

(6) Among the figures: 1transportation main roadway, 2stope branch roadway, 3air return roadway, 4filled wall, 5protective coal pillar, 6centralized transportation roadway, 7rail roadway, 8filled stope branch roadway

DETAILED DESCRIPTION

(7) Hereunder the present invention will be described in details with reference to the accompanying drawings.

(8) The skip-mining type wangeviry stope branch roadway filling and coal mining method provided in the present invention includes the following steps.

(9) At the terminal of a coal mining working face, from a centralized transportation roadway 6 towards an air return roadway 3, tunnel an inclined transportation main roadway 1 in communication with the air return roadway 3, with the exit of the transportation main roadway 1 in communication with the air return roadway 3 being disposed in the middle of the coal mining working face. The transportation main roadway 1 has a width of 5 m6 m. The stope branch roadway 2 has a width of 3.3 m and a length of 5 m150 m. the equipment required for the working face is transported through a rail roadway 7.

(10) Dividing the coal bodies at the left and right sides of the transportation main roadway 1 into multiple stope branch roadways 2 opposite orthogonally by strip mining, according to the geological condition of the surrounding rocks of the mining area.

(11) Allocating multiple stope branch roadways 2 opposite orthogonally into multiple mining stages, and mining the first stope branch roadway 2 allocated in the first mining stage first, i.e., mining from the transportation main roadway 1 at one side of the air return roadway 3 towards the first transverse stope branch roadway a.sub.1 on the left, and then filling the transverse stope branch roadway a.sub.1 immediately after mining, next, mining from the transportation main roadway 1 towards the first longitudinal stope branch roadway a.sub.2 on the right, and then filling the longitudinal stope branch roadway a.sub.2 immediately after mining.

(12) Mining the first stope branch roadway 2 in the next mining stage sequentially, i.e., mining from the transportation main roadway 1 towards the first transverse stope branch roadway a.sub.3 in the next mining stage on the left, and then filling the transverse stope branch roadway immediately after the mining, next, stoping from the transportation main roadway towards the first longitudinal stope branch roadway a.sub.4 in the next mining stage on the right, and then filling the stope branch roadway immediately after the mining. Repeating in that way, until the first stope branch roadways a.sub.i allocated in all mining stages are mined and filled.

(13) Mining the second stope branch roadway 2 in the first mining stage, i.e., mining from the transportation main roadway 1 towards the second transverse stope branch roadway b.sub.1 in the first mining stage on the left, adjacent to the filled stope branch roadway, and then filling the transverse stope branch roadway b.sub.1 immediately after the stoping, next, mining from the transportation main roadway 1 towards the second longitudinal stope branch roadway b.sub.2 in the first mining stage on the right, adjacent to the filled stope branch roadway 8, and then filling the stope branch roadway b.sub.2 immediately after the mining.

(14) Mining the second stope branch roadway 2 in the next mining stage sequentially, adjacent to the filled stope branch roadway 8, i.e., mining from the transportation main roadway 1 towards the second transverse stope branch roadway b.sub.3 in the next mining stage on the left, and then filling the transverse stope branch roadway b.sub.3 immediately after the mining, next, mining from the transportation main roadway towards the second longitudinal stope branch roadway b.sub.4 in the next mining stage on the right, and then filling the stope branch roadway b.sub.4 immediately after the mining, till the second stope branch roadways b.sub.i allocated in all mining stages are mined and filled.

(15) Back and forth, mining the next stope branch roadway 2 in the next mining stage sequentially, adjacent to the filled stope branch roadway 8, i.e., mining from the transportation main roadway 1 towards the next transverse stope branch roadway 2 in the next mining stage on the left, and then filling the transverse stope branch roadway 2 immediately after the mining, next, mining from the transportation main roadway 1 towards the next longitudinal stope branch roadway 2 in the next mining stage on the right, and then filling the stope branch roadway 2 immediately after the mining, till all stope branch roadways 2 allocated in all mining stages are mined and filled. Finally, only protective coal pillars 5 in the centralized transportation roadway 6 are left, and the entire working face is completely filled and supported by filled walls 4. thus, pillar-free coal mining is realized.

(16) As shown in FIG. 1, in a case that multiple stope branch roadways 2 opposite orthogonally are allocated into four mining stages, the steps are as follows:

(17) At the terminal of a coal mining working face, from a centralized transportation roadway 6 towards an air return roadway 3, tunnel an inclined transportation main roadway 1 in communication with the air return roadway 3, with the exit of the transportation main roadway 1 in communication with the air return roadway 3 being disposed in the middle of the coal mining working face. the transportation main roadway 1 has a width of 5 m6 m. The stope branch roadway 2 has a width of 3.3 m and a length of 5 m150 m. the equipment required for the working face is transported through a rail roadway 7.

(18) Divide the coal bodies at the left and right sides of the transportation main roadway 1 into multiple stope branch roadway 2 opposite orthogonally by strip mining.

(19) Allocating multiple stope branch roadways 2 opposite orthogonally into four mining stages, and mining the first stope branch roadway 2 allocated in the first mining stage first, i.e., mining from the transportation main roadway 1 at one side of the air return roadway 3 towards the first transverse stope branch roadway a.sub.1 on the left, and then filling the transverse stope branch roadway a.sub.1 immediately after the mining, next, mining from the transportation main roadway 1 towards the first longitudinal stope branch roadway a.sub.2 on the right, and then filling the longitudinal stope branch roadway a.sub.2 immediately after the mining.

(20) Mining the first stope branch roadway 2 in the second mining stage, i.e., mining from the transportation main roadway 1 towards the first transverse stope branch roadway a.sub.3 in the second mining stage on the left, and then filling the transverse stope branch roadway a.sub.3 immediately after the mining, next, mining from the transportation main roadway towards the first longitudinal stope branch roadway a.sub.4 in the second mining stage on the right, and then filling the longitudinal stope branch roadway a.sub.4 immediately after the mining.

(21) Mining the first stope branch roadway 2 in the third mining stage, i.e., mining from the transportation main roadway 1 towards the first transverse stope branch roadway a.sub.5 in the third mining stage on the left, and then filling the transverse stope branch roadway a.sub.5 immediately after the mining, next, mining from the transportation main roadway towards the first longitudinal stope branch roadway a.sub.6 in the third mining stage on the right, and then filling the longitudinal stope branch roadway a.sub.6 immediately after the mining.

(22) Mining the first stope branch roadway 2 in the fourth mining stage, i.e., mining from the transportation main roadway 1 towards the first transverse stope branch roadway a.sub.7 in the fourth mining stage on the left, and then filling the transverse stope branch roadway a.sub.7 immediately after the mining, next, mining from the transportation main roadway towards the first longitudinal stope branch roadway a.sub.8 in the fourth mining stage on the right, and then filling the longitudinal stope branch roadway a.sub.8 immediately after the mining.

(23) Now, the first stope branch roadways 2 in all mining stages have been mined and filled, and the mining sequence of the first stope branch roadways in all mining stages is shown in FIG. 1.

(24) Mining the second stope branch roadway 2 in the first mining stage, i.e., mining from the transportation main roadway 1 towards the second transverse stope branch roadway b.sub.1 in the first mining stage on the left, and then filling the transverse stope branch roadway b.sub.1 immediately after the mining, next, mining from the transportation main roadway 1 towards the second longitudinal stope branch roadway b.sub.2 in the first mining stage on the right, and then filling the longitudinal stope branch roadway b.sub.2 immediately after the mining.

(25) Mining the second stope branch roadway 2 in the second mining stage, i.e., mining from the transportation main roadway 1 towards the second transverse stope branch roadway b.sub.3 in the second mining stage on the left, and then filling the transverse stope branch roadway b.sub.3 immediately after the mining, next, mining from the transportation main roadway towards the second longitudinal stope branch roadway b.sub.4 in the second mining stage on the right, and then filling the longitudinal stope branch roadway b.sub.4 immediately after the mining.

(26) Mining the second stope branch roadway 2 in the third mining stage, i.e., mining from the transportation main roadway 1 towards the second transverse stope branch roadway b.sub.5 in the third mining stage on the left, and then filling the transverse stope branch roadway b.sub.5 immediately after the mining, next, mining from the transportation main roadway towards the second longitudinal stope branch roadway b.sub.6 in the third mining stage on the right, and then filling the longitudinal stope branch roadway b.sub.6 immediately after the mining.

(27) Mining the second stope branch roadway 2 in the fourth mining stage, i.e., mining from the transportation main roadway 1 towards the second transverse stope branch roadway b.sub.7 in the fourth mining stage on the left, and then filling the transverse stope branch roadway b.sub.7 immediately after the mining, next, mining from the transportation main roadway towards the second longitudinal stope branch roadway b.sub.8 in the fourth mining stage on the right, and then filling the longitudinal stope branch roadway b.sub.8 immediately after the mining.

(28) Now, the second stope branch roadways 2 in all mining stages have been mined and filled, and the mining sequence of the second stope branch roadways in all mining stages is shown in FIG. 2.

(29) Mining the third stope branch roadway 2 in the first mining stage, i.e., mining from the transportation main roadway 1 towards the third transverse stope branch roadway c.sub.1 in the first mining stage on the left, and then filling the transverse stope branch roadway c.sub.1 immediately after the mining, next, mining from the transportation main roadway 1 towards the third longitudinal stope branch roadway c.sub.2 in the first mining stage on the right, and then filling the longitudinal stope branch roadway c.sub.2 immediately after the mining.

(30) Mining the third stope branch roadway 2 in the second mining stage, i.e., mining from the transportation main roadway 1 towards the third transverse stope branch roadway c.sub.3 in the second mining stage on the left, and then filling the transverse stope branch roadway c.sub.3 immediately after the mining, next, mining from the transportation main roadway towards the third longitudinal stope branch roadway c.sub.4 in the second mining stage on the right, and then filling the longitudinal stope branch roadway c.sub.4 immediately after the mining.

(31) Mining the third stope branch roadway 2 in the third mining stage, i.e., mining from the transportation main roadway 1 towards the third transverse stope branch roadway c.sub.5 in the third mining stage on the left, and then filling the transverse stope branch roadway c.sub.5 immediately after the mining, next, mining from the transportation main roadway towards the third longitudinal stope branch roadway c.sub.6 in the third mining stage on the right, and then filling the longitudinal stope branch roadway c.sub.6 immediately after the mining.

(32) Mining the third stope branch roadway 2 in the fourth mining stage, i.e., mining from the transportation main roadway 1 towards the third transverse stope branch roadway c.sub.7 in the fourth mining stage on the left, and then filling the transverse stope branch roadway c.sub.7 immediately after the mining.

(33) Now, the third stope branch roadways 2 in all mining stages haven been mined and filled, and the mining sequence of the third stope branch roadways in all mining stages is shown in FIG. 3.

(34) Mining the fourth stope branch roadway 2 in the first mining stage, i.e., mining from the transportation main roadway 1 towards the fourth transverse stope branch roadway d.sub.1 in the first mining stage on the left, and then filling the transverse stope branch roadway d.sub.1 immediately after the mining, next, mining from the transportation main roadway 1 towards the fourth longitudinal stope branch roadway d.sub.2 in the first mining stage on the right, and then filling the longitudinal stope branch roadway d.sub.2 immediately after the mining.

(35) Mining the fourth stope branch roadway 2 in the second mining stage, i.e., mining from the transportation main roadway 1 towards the fourth transverse stope branch roadway d.sub.3 in the second mining stage on the left, and then filling the transverse stope branch roadway d.sub.3 immediately after the mining, next, mining from the transportation main roadway towards the fourth longitudinal stope branch roadway d.sub.4 in the second mining stage on the right, and then filling the longitudinal stope branch roadway d.sub.4 immediately after the mining.

(36) Mining the fourth stope branch roadway 2 in the third mining stage, i.e., mining from the transportation main roadway 1 towards the fourth transverse stope branch roadway d.sub.5 in the third mining stage on the left, and then filling the transverse stope branch roadway d.sub.5 immediately after the mining, next, mining from the transportation main roadway towards the fourth longitudinal stope branch roadway d.sub.6 in the third mining stage on the right, and then filling the longitudinal stope branch roadway d.sub.6 immediately after the mining.

(37) Mining the fourth stope branch roadway 2 in the fourth mining stage, i.e., mining from the transportation main roadway 1 towards the fourth transverse stope branch roadway d.sub.7 in the fourth mining stage on the left, and then filling the transverse stope branch roadway d.sub.7 immediately after the mining.

(38) Now, the fourth stope branch roadways 2 in all mining stages have been mined and filled, and the mining sequence of the fourth stope branch roadways in all mining stages is shown in FIG. 4.

(39) Filling the transportation main roadway 1 after all stope branch roadways allocated in all mining stages have been mined and filled, thus, the entire working face is completely filled and supported by filled walls 4, as shown in FIG. 5.