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| Study on Surrounding rock control technology of soft rock crossing roadway under complex surrounding rock conditions in Changcun Mine |
| Chen Xianwei1, Shi Yuan2 |
| 1. Changcun Mine of Shanxi Lu 'an Environmental Energy Development Co., Ltd., Changzhi 046102, China; 2. Shanxi Science and Technology Resources and Large Instruments Open Sharing Center, Taiyuan 030006, China |
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Abstract Aiming at the problem that the surrounding rock of 470 auxiliary transportation roadway in Changcun Mine was weak and the large deformation of surrounding rock was caused by cross-layer excavation, FLAC 3D numerical simulation software was used to compare and analyze the displacement of roadway under three conditions : no support, original support scheme and design support scheme. The reasonable support scheme suitable for soft rock cross-layer roadway was obtained, and the field industrial test was carried out. The results showed that:(1)The technology of downward anchoring bolt and bottom inverted arch could control the heave of roadway floor ; (2) After adopting the optimized support scheme, the maximum displacement of the roof and floor was 91 mm, which was 53.23 % lower than that of the original support. The maximum displacement of the two sides was 78 mm, which was 50.32 % lower than the original support, which basically met the engineering requirements.
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| [ 1 ] 国家统计局. 2018年国民经济和社会发展统计公报.
[ 2 ] 谢和平,吴立新,郑德志. 2025年中国能源消费及煤炭需求预测[ J ]. 煤炭学报,2019,44( 7 ):1 949 - 1 960.
[ 3 ] 杜贝举,刘长友,吴锋锋,等. 深井高应力软弱围岩巷道变形机理及控制研究[ J ]. 采矿与安全工程学报,2020,37( 6 ):1 123 - 1 132.
[ 4 ] 付玉凯,王 涛,孙志勇,等. 复合软岩巷道长短锚索层次控制技术及实践[ J ]. 采矿与安全工程学报,2021,38( 2 ):237 - 245.
[ 5 ] 夏德威,冷坤鹏,张镇铄,等. 基于FLAC~(3D)数值模拟的软岩巷道围岩稳定性及布置方案研究[ J ]. 矿业研究与开发,2020,40( 12 ):92 - 99.
[ 6 ] 曾冬艳,刘增辉,史金伟,等. 考虑围岩性质劣化的软岩巷道破坏规律数值模拟研究[ J ]. 矿业研究与开发,2021,41( 2 ):45 - 51.
[ 7 ] 赵增辉,马 庆,高晓杰,等. 弱胶结软岩巷道围岩非协同变形及灾变机制[ J ]. 采矿与安全工程学报,2019,36( 2 ):272 - 279,289.
[ 8 ] 康红普,姜鹏飞,黄炳香,等. 煤矿千米深井巷道围岩支护-改性-卸压协同控制技术[ J ]. 煤炭学报,2020,45( 3 ):845 - 864.
[ 9 ] 姜鹏飞,康红普,王志根,等. 千米深井软岩大巷围岩锚架充协同控制原理、技术及应用[ J ]. 煤炭学报,2020,45( 3 ):1 020 - 1 035.
[ 10 ] 孙大增,许兴亮,田素川,等. 园子沟煤矿回风大巷底鼓机理分析及修复技术研究[ J ]. 矿业研究与开发,2020,40( 6 ):57 - 62.
[ 11 ] 李 冲,何思锋,陈 梁. 大跨度穿断层软岩巷道顶板非对称破裂机制与控制对策研究[ J ]. 采矿与安全工程学报,2021,38( 6 ):1 081 - 1 090.
[ 12 ] 左建平,史 月,刘德军,等. 深部软岩巷道开槽卸压等效椭圆模型及模拟分析[ J ]. 中国矿业大学学报,2019,48( 1 ):1 - 11.
[ 13 ] 陈顺满,吴爱祥,王少勇,等. 软弱围岩巷道变形机理及返修控制技术[ J ]. 中国矿业大学学报,2018,47( 4 ):830 -
837.
[ 14 ] 杨仁树,李永亮,郭东明,等. 深部高应力软岩巷道变形破坏原因及支护技术[ J ]. 采矿与安全工程学报,2017,34( 6 ):1 035 - 1 041. |
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