煤层底板破碎带区域注浆围岩稳定性分析
Stability analysis of grouting surrounding rock in fracture zone in coal seam floor
-
摘要: 受地质隐蔽性、复杂性影响，裂隙存在注浆不到位而开采诱发二次破坏的安全风险。以张集矿1612A工作面邻近导水破碎带注浆底板为背景，基于所提出的数值模拟与微震监测结合的分析方法，研究了破碎带注浆治理效果，揭示了注浆前后采动应力影响及注浆岩体的稳定性。结果表明：相比较未注浆时，注浆围岩的应力异常区域减小，不再发生耦合贯通至工作面；应力在距巷帮约10 m后随距离增大扰动程度减小。微震监测同时验证了计算结果：岩石破裂信号在注浆波及区发生“绕路”现象，注浆区域微震事件数量较少，注浆岩体处于稳定状态。Abstract: Affected by the geological concealment and complexity, there is a potential safety risk of mining induced damage due to insufficient grouting in fissures. Based on the analysis method of combining numerical simulation and microseismic monitoring, the grouting treatment effect of water conducting channel is analyzed based on the background of the grouting floor of 1612A working face in Zhangji Coal Mine. The influence of mining stress and the stability of grouting rock mass are revealed before and after grouting. The results show that: compared with the non-grouting, the abnormal stress area of surrounding rock decreases. The coupling is no longer connected to the working face. After 10 m away from the roadway side, the disturbance degree decreases with the increase of distance. Microseismic monitoring further verified the calculation results: the rock fracture signal “detours” in the grouting affected area. The number of microseismic events in surrounding rock area is small, and the grouted rock mass is in stable state.
-
Keywords:
- coal floor /
- fracture zone /
- grouted rock /
- numerical calculation /
- microseismic monitoring
-
-
[1] 武强.我国矿井水防控与资源化利用的研究进展、问题和展望[J].煤炭学报，2014，39（5）：795-805. WU Qiang. Progress, problems and prospects of prevention and control technology of mine water and reutilization in China[J]. Journal of China Coal Society, 2014, 39（5）:795-805.
[2] 陈军涛，郭惟嘉，尹立明，等.深部开采底板裂隙扩展演化规律试验研究[J].岩石力学与工程学报，2016， 35（11）：2298-2306. CHEN Juntao, GUO Weijia, YIN Liming, et al. Experimental study of floor cracking under deep mining[J]. Chinese Journal of Rock Mechanics and Engineering, 2016, 35（11）: 2298-2306.
[3] 宋文成，梁正召，刘伟韬，等.采场底板破坏特征及稳定性理论分析与试验研究[J].岩石力学与工程学报， 2019，38（11）：2208-2218. SONG Wencheng, LIANG Zhengzhao, LIU Weitao, et al. Theoretical analysis and experimental investigation on failure characteristics and stability of stope floors[J]. Chinese Journal of Rock Mechanics and Engineering, 2019, 38（11）: 2208-2218.
[4] 李连崇，唐春安，梁正召，等.含断层煤层底板突水通道形成过程的仿真分析[J].岩石力学与工程学报，2009，28（2）：290-297. LI Lianchong, TANG Chunan, LIANG Zhengzhao, et al. Numerical analysis of pathway formation of groundwater inrush from faults in coal seam floor[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28（2）: 290-297.
[5] 宋文成，梁正召，赵春波.承压水上开采沿工作面倾向底板力学破坏特征[J].岩石力学与工程学报，2018， 37（9）：2131-2143. SONG Wencheng, LIANG Zhengzhao, ZHAO Chunbo. Mechanical failure characteristics of mining floor along working face inclination above confined water[J]. Chinese Journal of Rock Mechanics and Engineering, 2018, 37（9）: 2131-2143.
[6] 宋文成，梁正召.承压水上开采倾斜底板破坏特征与突水危险性分析[J].岩土力学，2020，41（2）：624. SONG Wencheng, LIANG Zhengzhao. Investigation on failure characteristics and water inrush risk of inclined floor mining above confined aquifer[J]. Rock and Soil Mechanics, 2020, 41（2）:624.
[7] 姚邦华，茅献彪，魏建平，等.考虑颗粒迁移的陷落柱流固耦合动力学模型研究[J].中国矿业大学学报，2014，43（1）：30-35. YAO Banghua, MAO Xianbiao, WEI Jianping, et al. Study on coupled fluid-solid model for collapse columns considering the effect of particle transport[J]. Journal of China University of Mining and Technology, 2014, 43（1）: 30-35.
[8] 张村，屠世浩，白庆升，等.陷落柱周边应力变化及推采控制研究[J].中国矿业大学学报，2014，43（6）：974-980. ZHANG Cun, TU Shihao, BAI Qingsheng, et al. Stress changes around collapse column and the control technology by directly passing operation in longwall working face[J]. Journal of China University of Mining and Technology, 2014, 43（6）: 974-980.
[9] 李见波，许延春.承压水渗流条件下预防陷落柱突水力学模型及应用[J].中国矿业大学学报，2016，45（2）：217-224. LI Jianbo, XU Yanchun. Mechanical model of the collapse column water inrush prevention considering the confined water seepage and its application[J]. Journal of China University of Mining and Technology, 2016, 45（2）: 217-224.
[10] 郑士田.两淮煤田煤层底板灰岩水害区域超前探查治理技术[J].煤田地质与勘探，2018，46（4）：142. ZHENG Shitian. Advanced exploration and control technology of limestone water hazard in coal seam floor in Huainan and Huaibei coalfields[J]. Coal Geology & Exploration, 2018, 46（4）: 142.
[11] 许延春，黄磊，俞洪庆，等．基于注浆钻孔数据集的注浆工作面底板突水危险性评价体系[J].煤炭学报，2020，45（3）：1150-1159. XU Yanchun, HUANG Lei, YU Hongqing, et al． Evaluation system for floor water inrush risk in grout-reinforced working faces based on grouting boreholes dataset[J]． Journal of China Coal Society, 2020, 45（3）: 1150-1159.
[12] 谢志钢，刘启蒙，柴辉婵，等.煤层底板隐伏陷落柱突水预测及采前注浆加固评价[J].中国安全生产科学技术，2019，15（5）：105-110. XIE Zhigang, LIU Qimeng, CHAI Huichan, et al. Prediction of water inrush from hidden collapse column at coal seam floor and evaluation of grouting reinforcement before mining[J]. Journal of Safety Science and Technology, 2019, 15（5）: 105-110.
[13] 姜福兴，叶根喜，王存文，等．高精度微震监测技术在煤矿突水监测中的应用[J]．岩石力学与工程学报，2008，27（9）：1932-1938. JIANG Fuxing, YE Genxi, WANG Cunwen, et al. Application of high-precision microseimic monitoring technique to water inrush monitoring in coal mine[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27（9）: 1932-1938.
[14] 李书奎，张连福，张少峰.微震监测技术在煤层底板突水防治中的应用[J].煤矿开采，2011，16（5）：94. LI Shukui, ZHANG Lianfu, ZHANG Shaofeng. Application of micro-seismic monitoring technology in floor water-burst prevention[J]. Coal Mining Technology, 2011, 16（5）: 94.
[15] 王悦，于水，王苏健，等.微震监测技术在煤矿底板突水预警中的应用[J].煤炭科学技术，2018，46（8）：68-73. WANG Yue, YU Shui, WANG Sujian, et al. Application of microseismic monitoring technology in water inrush warning of coal mine floor[J]. Coal Science and Technology, 2018, 46（8）: 68-73.
[16] 苏明金，许光泉，李佩全，等.张集煤矿A组煤层开采可行性探讨[J].煤炭工程，2010，42（4）：51-53. [17] 江东海，张冬.房式开采煤柱回收时工作面围岩应力分布模拟[J].煤矿安全，2014，45（2）：172-177. JIANG Donghai, ZHANG Dong. Working face surrounding rock stress distribution simulation in coal pillar recovery by room mining[J]. Safety in Coal Mines, 2014, 45（2）: 172-177.
[18] 刘晓国，魏廷双，余国锋，等.张集煤矿突水危险域微震监测系统应用[J].煤矿安全，2020，51（3）：111. LIU Xiaoguo, WEI Tingshuang, YU Guofeng, et al. Application of micro-seismic monitoring system in dangerous area of water inrush in Zhangji Coal Mine[J]. Safety in Coal Mines, 2020, 51（3）: 111.
-
期刊类型引用(15)
1. 张铎，孙伟，郭曦蔓，岑孝鑫，代爱萍. 煤制油气化灰渣防灭火凝胶的制备及性能. 材料导报. 2024(03): 255-261 . 
百度学术
2. 姜小龙，孙明，常建平，董红娟. 矿井煤自燃防灭火材料阻燃机理综述. 内蒙古科技大学学报. 2024(03): 226-229 . 百度学术
3. 李洋，戴广龙，杨苗苗. 高保水矿用凝胶阻化材料的制备和性能研究. 煤炭技术. 2023(03): 173-177 . 百度学术
4. 段西凯，周睿，何勇军. 矿用超吸水防灭火凝胶制备及性能研究. 煤矿安全. 2023(02): 71-76 . 本站查看
5. 谢军，卞兆庆，解恒星，王怡，王法铨. 基于CiteSpace的矿用凝胶研究趋势分析. 煤矿安全. 2023(02): 54-60 . 本站查看
6. 王海军，吴艳，马良，陈崇枫，孙保平，王相业，吴敏杰，刘善德. 陕北浅埋煤层一体化漏风通道探查技术. 煤矿安全. 2023(04): 83-90 . 本站查看
7. 陈鹏燕，周春山，程熙宇. CMC/AlCit/GDL防灭火凝胶的流变性能及本构方程研究. 应用化工. 2023(04): 1010-1014 . 百度学术
8. 唐金召，范利丹，张纪云，徐峰，余雳伟，杨杰，赵伟. 我国煤矿巷道锚杆支护理论及技术研究进展. 煤矿安全. 2023(06): 131-143 . 本站查看
9. 王毅泽，董凯丽，张玉龙，董智宇，王俊峰. CMC/ZrCit/GDL防灭火凝胶泡沫的制备及特性研究. 煤炭科学技术. 2023(06): 122-129 . 百度学术
10. 陈鹏燕，周春山. 矿用双网络凝胶防灭火特性研究. 煤矿安全. 2023(11): 84-91 . 本站查看
11. 杨苗苗，戴广龙. 矿用煤自燃防治高吸水高保水性水凝胶的制备及性能研究. 煤矿安全. 2022(02): 40-45 . 本站查看
12. 卜祝龙，张铎，吕英英，王慧，王泓皓，杨娟娟. 煤渣填充防火凝胶配比实验研究. 粘接. 2022(01): 12-18 . 百度学术
13. 韩福志，邵和，司俊鸿，张俊. 矿用堵漏无机触变防灭火凝胶的流变特性研究. 矿业安全与环保. 2022(01): 1-7 . 百度学术
14. 刘东. 基于程序升温实验的煤低温氧化特性数值模拟研究. 煤矿安全. 2022(05): 40-45 . 本站查看
15. 秦存利，刘袁昊，李军. 新型高分子材料防灭火技术研究与安全评估. 山东煤炭科技. 2021(10): 212-215+218+225 . 百度学术
其他类型引用(10)
计量
- 文章访问数: 27
- HTML全文浏览量: 0
- PDF下载量: 12
- 被引次数: 25
下载:
