切顶卸压沿空留巷围岩控制效果数值模拟研究
Numerical study on surrounding rock control effect of gob-side entry retaining by roof cutting and pressure relief
-
摘要: 为研究切顶卸压对沿空留巷围岩控制效果的影响规律，基于UDEC软件，对沿空留巷侧向顶板悬顶与垮落2种情况下的围岩受力变形特征进行深入分析。研究表明：相对于直接顶悬顶状态，直接顶垮落时煤帮侧煤层和巷旁支护墙体上的垂直应力集中系数分别降低0.19和0.49；直接顶垮落状态下沿空巷道顶板下沉、底板鼓起、煤帮内移和墙体内移量相对于直接顶未垮落状态下，分别降低73%、60%、27%、75%；巷道侧向悬顶是造成沿空巷道围岩大变形的重要原因，切顶会促使采空区上方直接顶有效垮落，采空区上覆岩层的重力无法有效向巷道周围的煤岩体中传递，且垮落的岩层会对顶板起到一定的支撑作用，有助于降低巷道围岩所承受的压力。Abstract: To study the influence of roof cutting and pressure relief on the surrounding rock control effect of gob-side entry retaining, numerical simulation was carried out by UDEC software, and the stress and deformation characteristics law of roadway surrounding rock under two states of whether the lateral roof collapsed or not were analyzed. The results show that compared with the state of the direct roof hanging, the vertical stress concentration coefficient of the coal seam on the coal side and the supporting wall beside the roadway are reduced by 0.19 and 0.49 respectively when the direct roof collapses. Under the condition of direct roof caving, the roof settlement, floor heave, coal wall internal displacement and wall internal displacement of roadway are reduced by 73%, 60%, 27% and 75% of that of direct roof hanging respectively. The direct roof hanging is an important reason for the large deformation of surrounding rock in gob-side entry. Cutting the roof will make the direct roof above the goaf collapse effectively, and the weight of overlying strata can not effectively transfer to the surrounding rock, and the collapsed rock stratum will play a certain supporting role on the roof, and also help to reduce the surrounding rock pressure.
-
-
[1] 武精科，阚甲广，谢生荣，等．深井高应力软岩沿空留巷围岩破坏机制及控制[J]．岩土力学，2017，38（3）：793－800. WU Jingke, KAN Jiaguang, XIE Shengrong, et al. Failure mechanisms and control of surrounding rock of deep gob-side entry retaining in soft rock strata under high stress[J]. Rock and Soil Mechanics, 2017, 38（3）: 793-800.
[2] Zhang Zizheng, Wang Weijun, Li Shuqing, et al. Analysis on Rockbolt Support Interaction with Roof Dilatancy Above Roadside Backfill Area in Gob-Side Entry Retaining[J]. Geotechnical and Geological Engineering, 2018, 36（4）: 2577-2591. [3] 张农，韩昌良，阚甲广，等．沿空留巷围岩控制理论与实践[J]．煤炭学报，2014，39（8）：1635－1641. ZHANG Nong, HAN Changliang, KAN Jiaguang, et al. Theory and practice of surrounding rock control for pillarless gob-side entry retaining[J]. Journal of China Coal Society, 2014, 39（8）: 1635-1641.
[4] 曹树刚，陈先哲，杨红运，等．沿空留巷巷旁控制技术及其适用条件分析[J]．煤炭科学技术，2016，44（4）：27－33. CAO Shugang, CHEN Xianzhe, YANG Hongyun, et al. Analysis on roadside control technology of gob－side entry retaining and applicable conditions[J]. Coal Science and Technology, 2016, 44（4）: 27-33.
[5] 林东才，栾恒杰．榫卯结构砌块墙沿空留巷技术研究及应用[J]．矿业研究与开发，2014，34（6）：26－28. LIN Dongcai, LUAN Hengjie. Research and application on drifting along the empty stope with mortise and tenon structure block wall[J]. Mining Research and Development, 2014, 34（6）: 26-28.
[6] 张国锋，何满潮，俞学平，等．白皎矿保护层沿空切顶成巷无煤柱开采技术研究[J]．采矿与安全工程学报，2011，28（4）：511－516. ZHANG Guofeng, HE Manchao, YU Shuping, et al. Research on the technique of no-pillar mining with gob-side entry formed by advanced roof caving in the protective seam in Baijiao coal mine[J]. Journal of Mining & Safety Engineering, 2011, 28（4）: 511-516.
[7] 何满潮，高玉兵，杨军，等．无煤柱自成巷聚能切缝技术及其对围岩应力演化的影响研究[J]．岩石力学与工程学报，2017，36（6）：1314－1325. HE Manchao, GAO Yubing, YANG Jun, et al. An energy-gathered roof cutting technique in no-pillar mining and its impact on stress variation in surrounding rocks[J]. Chinese Journal of Rock Mechanics and Engineering, 2017, 36（6）:1314-1325.
[8] 何满潮，陈上元，郭志飚，等．切顶卸压沿空留巷围岩结构控制及其工程应用[J]．中国矿业大学学报，2017， 46（5）：959－969. HE Manchao, CHEN Shangyuan, GUO Zhibiao, et al. Control of surrounding rock structure for gob-side entry retaining by cutting roof to release pressure and its engineering application[J]. Journal of China University of Mining & Technology,2017, 46（5）: 959-969.
[9] 何满潮，高玉兵，杨军，等．厚煤层快速回采切顶卸压无煤柱自成巷工程试验[J]．岩土力学，2018，39（1）：254－264. HE Manchao, GAO Yubing, YANG Jun, et al. Engineering experimentation of gob-side entry retaining formed by roof cutting and pressure release in a thick-seam fast-extracted mining face[J]. Rock and Soil Mechanics, 2018, 39（1）: 254-264.
[10] 郭志飚，王将，曹天培，等．薄煤层切顶卸压自动成巷关键参数研究[J]．中国矿业大学学报，2016，45（5）：879－885. GUO Zhibiao, WANG Jiang, CAO Tianpei, et al. Engineering experimentation of gob-side entry retaining formed by roof cutting and pressure release in a thick-seam fast-extracted mining face[J]. Journal of China University of Mining & Technology, 2016, 45（5）: 879-885.
[11] 高玉兵，郭志飚，杨军，等．沿空切顶巷道围岩结构稳态分析及恒压让位协调控制[J]．煤炭学报，2017，42（7）：1672－1681. GAO Yubing, GUO Zhibiao, YANG Jun, et al. Steady analysis of gob-side entry retaining formed by roof fracturing and control techniques by optimizing mine pressure[J]. Journal of China Coal Society, 2017, 42（7）: 1672-1681.
[12] 郭鹏飞，张国锋，陶志刚．坚硬软弱复合顶板切顶卸压沿空留巷爆破技术[J]．煤炭科学技术，2016，44（10）：120－124. GUO Pengfei, ZHANG Guofeng, TAO Zhigang. Blasting technology of gateway retaining along goaf pressure release by roof cutting in hard and weak complex roof[J]. Coal Science and Technology, 2016, 44（10）: 120-124.
[13] 宋立兵．神东矿区切顶卸压成巷技术研究[J]．煤炭科学技术，2016，44（8）：80－85. SONG Libing. Study on roof cutting，pressure released and gateway driving technology in Shendong Mining Area[J]. Coal Science and Technology, 2016, 44（8）: 80-85.
[14] 童碧，焦先军．直接硬厚顶板条件下无煤柱沿空留巷预裂爆破顶板控制技术[J]．煤矿安全，2016，47（6）：90－93. TONG Bi, JIAO Xianjun. Roof control technology by coal mining without pillars and gob－side entry retaining pre-splitting blasting under condition of direct hard-and-thick roof[J]. Safety in Coal Mines, 2016, 47（6）: 90-93.
[15] 王炯，朱道勇，宫伟力，等．切顶卸压自动成巷岩层运动规律物理模拟实验[J]．岩石力学与工程学报，2018，37（11）：2536. WANG Jiong, ZHU Daoyong, GONG Weili, et al. Physical simulation experiment on the movement of rock strata upon automatic roadway forming by roof cutting and pressure releasing[J]. Chinese Journal of Rock Mechanics and Engineering, 2018, 37（11）: 2536.
[16] 孙晓明，刘鑫，梁广峰，等．薄煤层切顶卸压沿空留巷关键参数研究[J]．岩石力学与工程学报， 2014（7）：1449－1456. SUN Xiaoming, LIU Xin, LIANG Guangfeng, et al. Key parameters of gob-side entry retaining formed by roof cut and pressure releasing in thin coal seams[J]. Chinese Journal of Rock Mechanics and Engineering, 2014（7）: 1449-1456.
[17] 杨森，周冰川，李迎富，等．无巷旁充填切顶卸压沿空留巷矿压显现规律及关键支护技术[J]．煤矿安全， 2018，49（8）：222. YANG Sen, ZHOU Bingchuan, LI Yingfu, et al. Ground pressure laws and key supporting technology of roof cutting and pressure relief without roadside filling along gob[J]. Safety in Coal Mines, 2018, 49（8）: 222.
[18] 韩昌良，张农，李保玉，等．坚硬顶板沿空留巷硬卸压与结构稳定机理研究[J]．中南大学学报，2015，22（11）： 4445－4455. HAN Changliang, ZHANG Nong, LI Baoyu, et al. Pressure relief and structure stability mechanism of hard roof for gob-side entry retaining[J]. Journal of Central South University, 2015, 22（11）: 4445-4455.
[19] 杨军，魏庆龙，王亚军，等．切顶卸压无煤柱自成巷顶板变形机制及控制对策研究[J]．岩土力学，2020，41（3）：989－998. YANG Jun, WEI Qinglong, WANG Yajun, et al. Roof deformation mechanism and control measures of pillarless mining with gob-side entry retaining by roof cutting and pressure relief[J]. Rock and Soil Mechanics, 2020, 41（3）: 989-998.
[20] 朱珍，张科学，袁红平．切顶卸压沿空留巷碎石巷帮控制技术及应用[J]．煤炭科学技术，2018，46（3）：25－32. ZHU Zhen, ZHANG Kexue, YUAN Hongping. Control technology and its application of roadway side wall formed by gangue in gob－side entry retaining formed by roof cutting and pressure releasing[J]. Coal Science and Technology, 2018, 46（3）: 25-32.
-
期刊类型引用(23)
1. 赵建光，刘振华，李海龙，郭智. 厚煤层复合顶板强矿压沿空掘巷围岩应力动态分布规律研究. 采矿技术. 2025(01): 64-71 . 
百度学术
2. 靳苏平. 厚煤层沿空留巷“煤—支护体”组合承载结构力学特性分析. 能源与环保. 2024(02): 256-261+268 . 百度学术
3. 刘春记. 切顶卸压及复合支护体系在沿空留巷中的应用. 煤炭与化工. 2024(05): 14-18 . 百度学术
4. 张俊虎，陈振江，高贤成，张磊，李建华，邓鹏江. 深部大采高工作面沿空留巷围岩控制技术. 煤矿安全. 2024(07): 118-126 . 本站查看
5. 李壮，刘明，王勇，赵志强. 基于精细化建模与有限差分计算的采空区围岩形变数值分析研究. 采矿技术. 2024(04): 95-99 . 百度学术
6. 陈磊，涂智凌. 窄煤柱工作面巷旁充填沿空留巷控制技术及应用. 煤炭技术. 2023(02): 81-85 . 百度学术
7. 孙志锋. 龙马煤矿切顶卸压爆破炮孔间距研究. 能源技术与管理. 2023(02): 39-40+91 . 百度学术
8. 张云宏，张艳宏. 煤矿回采巷道围岩应力演化规律及超前支护可行性研究. 能源与环保. 2023(08): 284-291+297 . 百度学术
9. 雷雨龙，李赵岩. 矿井综放工作面沿空留巷技术及矿压显现规律探析. 内蒙古煤炭经济. 2023(13): 34-36 . 百度学术
10. 翟春宝. 神东矿区上湾煤矿沿空留巷技术应用. 煤炭工程. 2023(S1): 37-42 . 百度学术
11. 魏振宇. 综采面切顶沿空留巷采空区帮控制技术研究. 山东煤炭科技. 2022(02): 70-71+74 . 百度学术
12. 杨俊文. 浅谈厚煤层开采切顶卸压的煤柱控制技术. 煤. 2022(03): 85-87 . 百度学术
13. 徐筝峥，杨玉贵，陈勇，侯珊珊，陈晓虎. 深部大采高沿空留巷围岩应力分布与变形规律研究. 煤矿安全. 2022(05): 59-66 . 本站查看
14. 王龙. 综采工作面切顶卸压沿空成巷无煤柱开采技术的应用. 能源与节能. 2022(05): 167-169 . 百度学术
15. 朱永，殷帅峰，李昊. 沿空留巷不同切顶参数卸压效果的数值模拟. 华北科技学院学报. 2022(02): 56-62 . 百度学术
16. 魏昌彪. 沿空留巷切顶卸压技术研究. 机械管理开发. 2022(04): 113-115 . 百度学术
17. 侯晋刚. 薄及中厚煤层沿空留巷中切顶卸压技术的应用探析. 西部探矿工程. 2022(08): 129-131+134 . 百度学术
18. 马文伟. 大采高坚硬顶板工作面巷道围岩控制技术. 煤矿安全. 2022(08): 94-103 . 本站查看
19. 张国辉，邢永. 综放工作面切顶卸压沿空留巷开采技术应用. 煤矿现代化. 2022(05): 5-8 . 百度学术
20. 高翔. 临汾宏大煤矿矸石充填开采沿空留巷围岩稳定性控制技术. 山东煤炭科技. 2022(08): 90-92 . 百度学术
21. 范宁潇. 古城煤矿N1303工作面切顶卸压沿空留巷技术应用. 山东煤炭科技. 2022(11): 49-51 . 百度学术
22. 朱伟，王玉浩，王天一. 沿空巷道水力切顶围岩控制数值模拟研究. 能源技术与管理. 2022(06): 1-3+13 . 百度学术
23. 张荣刚，王帅锋，袁显湖，崔东亮. 沿空留巷两回采巷道分区域围岩控制技术研究. 煤炭工程. 2022(S1): 37-43 . 百度学术
其他类型引用(3)
计量
- 文章访问数: 50
- HTML全文浏览量: 0
- PDF下载量: 78
- 被引次数: 26
下载:
