| Citation: |
WANG Guangsen, SUN Chenke. Research on technology of replacing roadway with borehole for gas control in large mining height working faces[J]. Journal of Mine Automation，2025，51（7）：97-104. DOI: 10.13272/j.issn.1671-251x.2025030019
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At present, most studies on the borehole layout parameters in the gas drainage technology of replacing roadway with borehole determine the borehole height only based on the "three-zone" distribution, while there is little research on the horizontal position and spacing of boreholes. To address this problem, taking Pingmei 15050 working face as the engineering background, the layout parameters of directional long boreholes in the roof of a large mining height working face were determined by combining physical similarity simulation experiments, theoretical analysis, and numerical simulation. Physical similarity simulation experiments were established in both the strike and dip directions of the 15050 working face. The characteristics of overburden collapse in strike and dip directions of the large mining height working face were analyzed. The height of the caving zone was found to be 11.5 m, and the height of the fracture zone was 11.5-52.0 m. The gas enrichment areas in the goaf were determined as the fracture zones near the return airway and the working face, which indicated the direction for the drilling locations of directional long boreholes. To accurately calculate the horizontal position of the corresponding boreholes, a calculation model for the horizontal position of directional long boreholes was established based on the results of physical similarity simulation in the dip direction, and a formula for calculating the horizontal position of boreholes was derived. In order to determine the reasonable spacing of boreholes, a gas drainage model for the roof directional long boreholes was established, and the gas flow direction and concentration distribution were simulated under conditions without long boreholes and with different borehole spacings. The reasonable spacing of boreholes was determined to be 5 m in the vertical direction and 3 m in the horizontal direction. Field application results showed that the average gas volume fraction was 16.1%, the average net drainage volume was 4.1 m³/min, and the average gas volume fraction in the upper corner was 0.43%, achieving the expected effect of gas control in the working face by replacing roadway with borehole.
| [1] |
李宏,马金魁. 大直径顶板定向长钻孔替代高抽岩巷的瓦斯抽采效果分析[J]. 煤炭科学技术,2020,48(7):304-310.
LI Hong,MA Jinkui. Analysis on gas drainage effect of large diameter roof directional long borehole instead of high drainage rock roadway[J]. Coal Science and Technology,2020,48(7):304-310.
|
| [2] |
王勇,马金魁. 顶板定向长钻孔“以孔代巷”抽采瓦斯技术研究[J]. 矿业安全与环保,2019,46(5):95-98,103. DOI: 10.3969/j.issn.1008-4495.2019.05.020
WANG Yong,MA Jinkui. Gas drainage technology by directional long borehole in roof to replace gateway[J]. Mining Safety & Environmental Protection,2019,46(5):95-98,103. DOI: 10.3969/j.issn.1008-4495.2019.05.020
|
| [3] |
史永涛. 顺层定向长钻孔在厚煤层沿顶掘进工作面的应用[J]. 工矿自动化,2020,46(6):76-80,97.
SHI Yongtao. Application of bedding directional long borehole in thick coal-seam along top excavating face[J]. Industry and Mine Automation,2020,46(6):76-80,97.
|
| [4] |
邓明,张国枢,刘泽功,等. 高瓦斯面顶板走向钻孔抽放数值模拟与试验[J]. 煤田地质与勘探,2008,36(5):20-23. DOI: 10.3969/j.issn.1001-1986.2008.05.005
DENG Ming,ZHANG Guoshu,LIU Zegong,et al. Numerical simulation and experimental study of methane drainage of goaf from drills along roof strike[J]. Coal Geology & Exploration,2008,36(5):20-23. DOI: 10.3969/j.issn.1001-1986.2008.05.005
|
| [5] |
王鲜,许超,李泉新,等. 淮南矿区顶板复杂地层中高位定向钻孔钻进工艺研究[J]. 煤炭科学技术,2018,46(11):145-150.
WANG Xian,XU Chao,LI Quanxin,et al. Study on high-level directional borehole technology in complex roof stratum of Huainan Mining Area[J]. Coal Science and Technology,2018,46(11):145-150.
|
| [6] |
曹文超,龚选平,李红波,等. 综放工作面采空区高位定向钻孔抽采效果影响因素分析[J]. 煤炭工程,2020,52(5):87-91.
CAO Wenchao,GONG Xuanping,LI Hongbo,et al. Influencing factors of high level directional drilling in goaf of fully-mechanized top-coal caving face[J]. Coal Engineering,2020,52(5):87-91.
|
| [7] |
白刚,杨忠,段会军. 定向高位长钻孔上隅角瓦斯治理技术[J]. 工矿自动化,2020,46(3):84-88.
BAI Gang,YANG Zhong,DUAN Huijun. Gas control technology of directional high-level long borehole at upper corner[J]. Industry and Mine Automation,2020,46(3):84-88.
|
| [8] |
陈龙,龚选平,成小雨,等. 低瓦斯高强度开采综放工作面卸压瓦斯抽采关键技术[J]. 西安科技大学学报,2021,41(5):815-824.
CHEN Long,GONG Xuanping,CHENG Xiaoyu,et al. Key technologies of pressure relief gas drainage in fully-mechanized caving face with low gas and high strength mining[J]. Journal of Xi'an University of Science and Technology,2021,41(5):815-824.
|
| [9] |
洪建俊,张杰,刘杰. 复杂岩层高位定向长钻孔成孔技术应用研究[J]. 煤炭工程,2020,52(3):57-61.
HONG Jianjun,ZHANG Jie,LIU Jie. Application of high directional long hole drilling in complex rock formation[J]. Coal Engineering,2020,52(3):57-61.
|
| [10] |
童碧. 复杂顶板高位定向长钻孔全程下筛管技术实践[J]. 煤矿安全,2021,52(9):85-89.
TONG Bi. Technical practice of running screen in the whole process for high level directional drilling of complex roof[J]. Safety in Coal Mines,2021,52(9):85-89.
|
| [11] |
程志恒,卢云,苏士龙,等. 采空区顶板高位走向长钻孔高效抽采瓦斯机理研究[J]. 煤炭科学技术,2020,48(2):136-142.
CHENG Zhiheng,LU Yun,SU Shilong,et al. Mechanism study on high efficiency gas drainage of high level strike long boreholes in gob roof[J]. Coal Science and Technology,2020,48(2):136-142.
|
| [12] |
景长宝,张宝第,褚志伟,等. 复杂顶板高位定向长钻孔钻完孔技术[J]. 煤矿安全,2023,54(10):201-205.
JING Changbao,ZHANG Baodi,CHU Zhiwei,et al. Hole completion technology for high level directional long borehole in complex roof[J]. Safety in Coal Mines,2023,54(10):201-205.
|
| [13] |
胡国忠,李康,许家林,等. 覆岩采动裂隙空间形态反演方法及在瓦斯抽采中的应用[J]. 煤炭学报,2023,48(2):750-762.
HU Guozhong,LI Kang,XU Jialin,et al. Spatial morphology inversion method of mining-induced fractures of overburden and its application in gas drainage[J]. Journal of China Coal Society,2023,48(2):750-762.
|
| [14] |
郝世俊,段会军,莫海涛,等. 大直径高位定向长钻孔瓦斯抽采技术及实践[J]. 煤田地质与勘探,2020,48(6):243-248. DOI: 10.3969/j.issn.1001-1986.2020.06.032
HAO Shijun,DUAN Huijun,MO Haitao,et al. Gas drainage technology and practice analysis of large diameter high position directional long borehole[J]. Coal Geology & Exploration,2020,48(6):243-248. DOI: 10.3969/j.issn.1001-1986.2020.06.032
|
| [15] |
张育磊. 高瓦斯煤层群顶板定向长钻孔抽采技术研究[J]. 矿业安全与环保,2022,49(1):59-64.
ZHANG Yulei. Study on directional long borehole extraction technology in roof of coal seam group with high gas content[J]. Mining Safety & Environmental Protection,2022,49(1):59-64.
|
| [16] |
魏宏超. 高位定向长钻孔替代高抽巷瓦斯抽采技术应用研究[J]. 煤炭技术,2023,42(6):175-178.
WEI Hongchao. Application and study on gas extraction technology of high directional long drilling instead of high-level pumping roadway[J]. Coal Technology,2023,42(6):175-178.
|
| [17] |
姜周民. 基于COMSOL的顶板定向长钻孔布置参数研究[J]. 煤炭工程,2023,55(3):127-132.
JIANG Zhoumin. Layout parameters of long directional boreholes in roof based on COMSOL[J]. Coal Engineering,2023,55(3):127-132.
|
| [18] |
贾晓亮. 老厂矿区高位定向长钻孔“以孔代巷”瓦斯抽采技术研究[J]. 矿业安全与环保,2021,48(5):103-107.
JIA Xiaoliang. Research on gas drainage technology by high level directional long drilling to replace drainage gateway in Laochang mining area[J]. Mining Safety & Environmental Protection,2021,48(5):103-107.
|
| [19] |
赵鹏翔,康新朋,李树刚,等. 卸压瓦斯运移区“孔−巷”协同抽采布置参数优化及高效抽采[J]. 煤炭科学技术,2022,50(2):137-146.
ZHAO Pengxiang,KANG Xinpeng,LI Shugang,et al. Optimization of "hole-drift" collaborative drainage layout parameters and high efficient drainage in pressure relief gas migration area[J]. Coal Science and Technology,2022,50(2):137-146.
|
| [20] |
许石青,余婕,田世祥,等. 采空区瓦斯高位定向长钻孔抽采技术研究[J]. 矿业研究与开发,2021,41(4):27-31.
XU Shiqing,YU Jie,TIAN Shixiang,et al. Study on gas drainage technology of high-location directional long drilling in goaf[J]. Mining Research and Development,2021,41(4):27-31.
|
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