CN-122014245-A - Roadway arrangement method for vertical trough coal mining

CN122014245ACN 122014245 ACN122014245 ACN 122014245ACN-122014245-A

Abstract

The invention relates to the technical field of coal exploitation, in particular to a roadway arrangement method for vertical trough coal exploitation, which comprises the following steps: and 1, arranging an exploitation system, namely arranging a main vertical shaft, a secondary vertical shaft and a return air vertical shaft in a side rock layer of a coal bed bottom plate, communicating the main vertical shaft, the secondary vertical shaft and the return air vertical shaft with a shaft bottom car park underground, and exploiting a return air main roadway, a transportation main roadway and a track main roadway which are arranged in the rock layer of the coal bed bottom plate from the shaft bottom car park. The invention has reasonable and compact structure and convenient use, realizes the construction of a three-dimensional communication network through arranging a plurality of communication lanes between the material conveying crossheading well and the pedestrian special crossheading well, and realizes the mechanized, safe and intelligent continuous exploitation of the vertical slot coal seam with the thickness of 4-10 meters by constructing a comprehensive lane arrangement system which takes the crossheading well as a core and is communicated with each horizontal lane and a coal chute through a stone gate, and has the characteristics of high efficiency, high recovery rate and simple working procedure.

Inventors

HAN YONGQIANG
LIU QINGLI
SUN SHUO
JING GANG
JIN ZHIYUAN
MA LIQIANG
WANG CHAOYANG
PENG MINGQI
AN YI

Assignees

天山实验室
郑州郑煤设计工程有限公司
新疆工程学院
郑州煤矿机械集团有限责任公司
陕西科索矿业有限公司

Dates

Publication Date: 20260512
Application Date: 20260215

Claims (10)

1. The well lane arrangement method for mining the vertical trough coal is characterized by comprising the following steps of: step 1, arranging an exploitation system, namely arranging a main vertical shaft, a secondary vertical shaft and a return air vertical shaft in a side rock layer of a coal bed bottom plate, communicating the main vertical shaft, the secondary vertical shaft and the return air vertical shaft with a shaft bottom car park underground, and exploitation a return air main roadway, a transportation main roadway and a track main roadway which are arranged in the rock layer of the coal bed bottom plate from the shaft bottom car park; Step 2, arranging working surfaces, namely dividing a horizontal vertical trough coal in a well field into a plurality of inclined stoping working surfaces along the direction of the trend of the coal bed, wherein each stoping working surface is a stoping working surface, each stoping roadway comprises a working surface cutting hole, a return air sequential trough well, a material conveying sequential trough well and at least 2 coal sliding holes penetrating through the stoping working surfaces, the working surface cutting holes of the stoping working surfaces are horizontally arranged along the direction of the coal bed, the return air sequential trough well, the material conveying sequential trough well and the coal sliding holes are all arranged along the inclined direction of the coal bed, and the stoping working surfaces are stoped from top to bottom along the inclined direction of the coal bed; and 3, communicating the lower end of the coal chute with a large transportation roadway through a transportation stone door, communicating the upper end of a return air gate well with the large rail roadway through a first return air stone door, communicating the lower end of the return air gate well with the large rail roadway through a second return air stone door, communicating the upper end of the conveying gate well with the large rail roadway through a third return air stone door, communicating the lower end of the conveying gate well with the large rail roadway through a conveying stone door, communicating the upper end of the return air communicating well with the large rail roadway through a fourth return air stone door, communicating the lower end of the return air communicating well with the tail end of the large transportation roadway and the tail end of the large rail roadway through a fifth return air stone door respectively, and cutting eyes of the upper ends of the return air gate well and the conveying gate well.
2. The mine roadway arrangement method for the vertical trough coal mining according to claim 1, wherein in the step 2, the stoping roadway further comprises a pedestrian dedicated gate shaft, a return air gate shaft and a material conveying gate shaft are respectively constructed on the left side and the right side of a stoping working face, a pedestrian dedicated gate shaft positioned in a rock layer on the side of a coal bed bottom plate is arranged beside the material conveying gate shaft, the upper end of the pedestrian dedicated gate shaft is communicated with a working face cutting hole, and the material conveying gate shaft is communicated with the pedestrian dedicated gate shaft through a plurality of connecting roadways arranged at intervals up and down.
3. The mine roadway arrangement method for mining the vertical trough coal, according to claim 2, is characterized in that a pedestrian-specific gate shaft and a material conveying gate shaft are arranged in parallel, and the upper end of the pedestrian-specific gate shaft is communicated with a return air main roadway through a six-number return air stone door.
4. The mine roadway arrangement method for the vertical trough coal mining according to claim 2, wherein the pedestrian-specific gate shaft is arranged vertically to the horizontal plane, the upper end of the pedestrian-specific gate shaft is communicated with the return air main roadway through a third return air gate, and the lower end of the pedestrian-specific gate shaft is communicated with the track main roadway through a material conveying gate.
5. The mine shaft layout method of vertical trough coal mining according to claim 2 or 3 or 4, characterized in that the distance between the upper and lower sides of the connecting shaft is 5 to 10 meters.
6. The mine roadway arrangement method for the vertical trough coal mining according to claim 2, 3 or 4, wherein in the step 2, return air mine shafts, material conveying mine shafts and pedestrian dedicated mine shafts are all arranged along a floor of a vertical trough coal seam, and the coal chute holes, the return air mine shafts, the material conveying mine shafts and the pedestrian dedicated mine shafts are all half coal mine roadways or full coal mine roadways.
7. The mine roadway arrangement method for mining the vertical trough coal, according to claim 5, wherein in the step 2, return air roadway wells, material conveying roadway wells and pedestrian dedicated roadway wells are all arranged along a floor of the vertical trough coal layer, and the coal chute holes, the return air roadway wells, the material conveying roadway wells and the pedestrian dedicated roadway wells are all half coal rock roadways or full coal roadways.
8. The mine roadway arrangement method for mining vertical trough coal according to claim 1, 2, 3,4 or 7 is characterized in that in the step 2, coal sliding holes are uniformly distributed in the middle of a stope face, the distance between adjacent coal sliding holes is 50-100 m, a sleeve which can be detached in a segmented mode is arranged in each coal sliding hole, a buffer device is arranged at each coal sliding hole, or/and in the step 1, a return air main roadway is arranged on the bottom plate side of each horizontal top boundary coal seam, a transportation main roadway and a track main roadway are arranged on the bottom plate side of each horizontal bottom boundary coal seam, and the transportation main roadway is higher than the track main roadway.
9. The mine roadway arrangement method for vertical trough coal mining according to claim 5, wherein in the step 2, coal sliding eyes are uniformly distributed in the middle of a stope face, the distance between adjacent coal sliding eyes is 50-100 m, a sleeve pipe which can be detached in a segmented mode is arranged in each coal sliding eye, and a buffer device is arranged at the coal sliding eye part, or/and in the step 1, a return air main roadway is arranged on the bottom plate side of each horizontal top boundary coal seam, a transportation main roadway and a track main roadway are arranged on the bottom plate side of each horizontal bottom boundary coal seam, and the transportation main roadway is higher than the track main roadway.
10. The mine roadway arrangement method for vertical trough coal mining according to claim 6, wherein in the step 2, coal sliding eyes are uniformly distributed in the middle of a stope face, the distance between adjacent coal sliding eyes is 50-100 m, a sleeve pipe which can be detached in a segmented mode is arranged in each coal sliding eye, and a buffer device is arranged at the coal sliding eye part, or/and in the step 1, a return air main roadway is arranged on the bottom plate side of each horizontal top boundary coal seam, a transportation main roadway and a track main roadway are arranged on the bottom plate side of each horizontal bottom boundary coal seam, and the transportation main roadway is higher than the track main roadway.

Description

Roadway arrangement method for vertical trough coal mining Technical Field The invention relates to the technical field of coal mining, in particular to a roadway arrangement method for vertical trough coal mining. Background In the field of coal mining technology, steeply inclined coal seams with an inclination angle of 60 ° to 90 ° are generally defined as standing seam coal. Currently, mining techniques for such coal seams are relatively scarce. Driven by short-term high profit and low cost, partial small mines mainly mine the outcrop part of the vertical trough coal, but the small mines generally have the problems of extremely low recovery rate, lag in mining process, poor safety condition and the like. Although there is a possibility of mechanized production in theory for a wide range of standing groove coal occurrence zones, practical application faces a number of difficulties. The existing comprehensive mechanized production mode is mainly concentrated in mines with coal thickness of more than 20 meters, short-arm mining is adopted, production efficiency is relatively low, and stable coal seams with coal thickness of 1.5 meters to 6 meters are produced by adopting pseudo-inclined flexible shield supports. However, the production mode essentially belongs to the blasting and mining technology, has low mechanization degree and low mining efficiency, and needs to frequently install and remove the bracket, thereby being not beneficial to popularization of intelligent production technology. Especially for vertical trough coal with the thickness of 4-10 meters, no mature comprehensive mechanized mining technology exists at present. The Chinese patent document with the publication number of CN110566205B discloses a steeply inclined coal seam mining method, which is characterized by comprising the step of horizontally sectionally mining the steeply inclined coal seam, wherein a return air cis-duct is arranged at the upper part of a section, a transportation cis-duct is arranged at the lower part of the section, a cutting hole is obliquely arranged along the trend of the coal seam, the included angle between the cutting hole and the transportation cis-duct is 8-40 degrees, and a hydraulic support, a scraper conveyor and a coal mining machine with n-shaped cross sections are arranged in the cutting hole. The mining method is mainly used for steeply inclined coal beds with the coal bed thickness being smaller than 8m and the inclination angle being larger than 45 degrees, but has the following problems when being applied to mining of 4-10 m vertical trough coal, wherein (1) the scheme depends on specific inclined angle arrangement of 8-40 degrees between an open-cut hole and a transportation cis trough, when the coal bed thickness is increased to 4-10 m, the stability control difficulty of a bracket is increased, the trend length of a working face is limited, large-scale continuous mining is not facilitated, (2) a hydraulic bracket with an n-shaped cross section is adopted, the structure is complex, the manufacturing cost is high, the anti-fall and anti-skid and maintenance difficulty of the bracket are extremely high under the condition of vertical trough coal approaching to 90 degrees, and (3) the upper limit of the coal bed thickness is 8m, and the equipment matching capacity and the adaptability of the mining process are insufficient for the part with the larger thickness in the range of 4-10 m, so that the full-range efficient mechanical mining is difficult to realize. The Chinese patent document with publication number CN118933780A discloses an intelligent mining process for steeply inclined complex-structure coal beds, which is characterized in that the steeply inclined coal beds are classified according to the thickness and the inclination angle of the coal beds, a single gasification surface linear mining gasifier or a double gasification surface U-shaped underground gasifier is arranged, and an oxygen-containing gasifying agent is injected into the coal beds through a gas injection well and a production well to gasify the coal beds. The technology aims to solve the mining problem of the steeply inclined complex-structure coal seam, but when the technology is applied to mining of 4-10 m vertical trough coal, the technology mainly adopts an underground gasification technology, namely coal is directly converted into gas underground, the technology is essentially different from a mining mode of directly obtaining solid coal resources through mechanical equipment, the requirement of coal as solid resources cannot be met, the applicable coal seam inclination angle of the technology is classified as less than 65 degrees or less than 60 degrees and does not comprise a vertical trough coal range of 60-90 degrees, the mining problem of high-angle vertical trough coal cannot be solved, and (3) underground gasification is easy to generate underground water pollution and ground surface subsidence risk, the resource