[1]刘永立,丛 利,王振锁.高静载回采巷道矿压的显现规律及其防治[J].黑龙江科技大学学报,2021,31(05):531-537.[doi:10.3969/j.issn.2095-7262.2021.05.001 ]
 Liu Yongli,Cong Li,Wang Zhensuo.Mine pressure behavior law behind mining roadways with high static load and their prevention and control[J].Journal of Heilonhjiang Institute of Science and Technology,2021,31(05):531-537.[doi:10.3969/j.issn.2095-7262.2021.05.001 ]
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高静载回采巷道矿压的显现规律及其防治()
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《黑龙江科技大学学报》[ISSN:2095-7266/CN:2301588/TD]

卷:
31
期数:
2021年05
页码:
531-537
栏目:
出版日期:
2021-09-30

文章信息/Info

Title:
Mine pressure behavior law behind mining roadways with high static load and their prevention and control
文章编号:
2095-7262(2021)05-0531-07 文献标志码:A
作者:
刘永立1 丛 利2 王振锁1
(1.黑龙江科技大学 矿业工程学院, 哈尔滨 150022; 2.黑龙江科技大学 安全工程学院, 哈尔滨 150022)
Author(s):
Liu Yongli1 Cong Li2 Wang Zhensuo1
(1.School of Mining Engineering, Heilongjiang University of Science & Technology, Harbin 150022, China; 2.School of Safety Engineering, Heilongjiang University of Science & Technology, Harbin 150022, China)
关键词:
矿压 高静载 回采巷道 冲击地压 大直径钻孔
Keywords:
mine press high static load miming roadway rock burst large diameter borehole
分类号:
TD315
DOI:
10.3969/j.issn.2095-7262.2021.05.001
文献标志码:
A
摘要:
针对葫芦素煤矿21103回采巷道底鼓、煤柱帮鼓、锚杆锚索脱落等冲击显现问题,在超前区域使用大直径钻孔卸压技术,通过数值模拟、工业测试等方法,研究21103回采巷道的冲击地压显现规律。研究结果表明:21103回风巷左侧煤柱超前工作面68 m范围高应力集中; 随着工作面的推进,工作面临空侧应力呈“L”型分布,超前区域出现应力集中; 大直径钻孔卸压后,煤层能够有效释放积聚的弹性能,回风巷煤柱侧、工作面侧应力峰值降幅分别为53.72%、58.12%,降幅明显; 经现场工业测试验证,超前工作面16 m范围内进行大直径钻孔卸压效果显著。该研究可降低21103回采巷道发生冲击地压的风险,保障了下一个工作面顺利开采。
Abstract:
This paper is an attempt to overcome notorious difficulties such as floor heave, coal pillar side heave, and anchor cable falling off, as occurs in the 21103 mining roadway of Hulusu Coal Mine. The study involves investigating the rock burst behavior law of 21103 mining roadway by means of numerical simulation and industrial test, and relieving pressure in the leading area using large diameter boreholes.The results show that the high stress concentration occurs in the 68 m range of the leading face of the coal pillar on the left side of the 21103 return air roadway; and with the advance of the working face comes an “L” stress distribution on the empty side of the working face, contributing to the stress concentration in the leading area.The pressure relief of large diameter boreholes allows the accumulated elastic energy to be effectively released in the coal seams, leading to significant decrease of about 53.72% and 58.12% in the peak stress of the two sides of the return air roadway; as is shown by the on-site industrial tests, the pressure relief of large diameter drilling provides remarkable effect within 16m of the leading working face.The study could reduce the risk of rock bursts in 21103 mining roadway and, ensure the smooth mining of the next working face.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2021-06-21
基金项目: 黑龙江省“百千万”工程科技重大专项项目(SC2020ZXO4A0006)
第一作者简介: 刘永立(1968-),男,黑龙江省宾县人,教授,博士,研究方向:煤矿应急救援,E-mail:yongliliu1968@126.com。
编辑 晁晓筠 校对 张永彬
更新日期/Last Update: 2021-09-25