洛河组砂岩含水层下大采高工作面导水断裂带演化规律
Evolution law of water-conducting fault zone in large mining height working face under sandstone aquifer of Luohe Formation
-
摘要: 针对旬耀矿区厚煤层大采高工作面上覆洛河组砂岩含水层下的安全采煤问题,采用理论分析、相似材料试验和数值模拟研究了某矿1109大采高工作面覆岩破断及裂隙演化规律。研究表明:上覆岩层经历了直接顶破断、基本顶初次破断与周期破断、亚关键层初次破断与周期破断5个阶段,破断发生引起工作面煤壁上方裂隙密度和开度发生跃变,采空区覆岩裂隙经历孕育、产生、张开、闭合、压实5个动态阶段;从开切眼到充分采动过程中,在裂隙带的上部、工作面煤壁上方及开切眼上方裂隙较为发育,裂隙区近似“抛物线”状,采空区中部覆岩裂隙闭合而边界处裂隙不易闭合;工作面充分采动后,导水断裂带发育高度82~85 m,未导通上覆洛河组砂岩。Abstract: Aiming at the problem of safe coal mining under the sandstone aquifer covering Luohe Formation in the thick coal seam mining face of Xunyao Mining Area, theoretical analysis, similar material test and numerical simulation were used to study the overlying rock fracture and fracture evolution of large mining height in 1109 mining face. The results indicate that: under the condition of fully mechanized caving mining, overburden strata has experienced 5 changes, immediate roof broken, basic roof broken, basic roof periodic broken, key strata broken and key strata periodic broken. The density and width of fracture above working face will have a leap when the overburden rock is broken. In this process, the mining-induced fractures also have experienced 5 dynamic changes: preparation, production, stretch, close and compaction; many cracks will generate on fracture zone top, working face top and open-off cuts top in the course from open-off cuts to the full mining stage. The crack area which spreads around compacting area is parabolic shape. Namely, the cracks in central zone of overburden strata will close easily but the cracks in border zone will not; after the working face is fully excavated, the height of the water-conducting fissure zone is about 82 m to 85 m, and the sandstone overlying Luohe Formation is not connected.
-
-
[1] 戴华阳,廖孟光,孟宪营,等.峰峰矿区九龙矿水库下采煤安全性分析[J].煤炭学报,2014,39(S2):295. DAI Huayang, LIAO Menggang, MEGN Xianying, et al. Analysis of the security of mining under the reservoir in Jiulong Coal Mine of Fengfeng mining area[J]. Journal of China Coal Society, 2014,39(S2): 295.
[2] 任丽泉,黄玉凯,白国良.水库坝体下综放开采安全性研究[J].煤矿开采,2016,21(6):61-64. REN Liquan, HUANG Yukai, BAI Guoliang, et al. Safety of fully mechanized top coal caving under dam of reservoir[J]. Coal Mining Technology, 2016, 21(6): 61-64.
[3] 鞠金峰,许家林,李全生,等.我国水体下保水采煤技术研究进展[J].煤炭科学技术,2018,46(1):12-19. JU Jinfeng, XU Jialin, LI Quansheng, et al. Progress of water-preserved coal mining under water in China[J]. Coal Science and Technology, 2018, 46(1): 12-19.
[4] 高保彬,王晓蕾,李回贵,等.水体下综放开采可行性分析[J].水资源与水工程学报,2013,24(1):35-39. GAO Baobin, WANG Xiaolei, LI Huigui, et al. Feasibility analysis if fully mechanized mining under water body[J]. Journal of Water Resources & Water Engineering, 2013, 24(1): 35-39.
[5] 姜耀东,杨英明,马振乾,等.大面积巷式采空区覆岩破坏机理及上行开采可行性分析[J].煤炭学报,2016,41(4):801-807. JIANG Yaodong, YANG Yingming, MA Zhenqian, et al. Breakage mechanism of roof strata above widespread mined-out area with roadway mining method and feasibility analysis of upward mining[J]. Journal of China Coal Society, 2016, 41(4): 801-807.
[6] 杨建立,滕永海.综采放顶煤导水裂缝带发育规律分析[J].煤炭科学技术,2009,37(12):100-102. YANG Jianli, TENG Yonghai. Study on development law of water conducted fracture zone in top coal of fully mechanized top coal caving mining face[J]. Coal Science and Technology, 2009, 37(12): 100-102.
[7] 韩军,张宏伟,高照宇,等.巨厚煤层软弱覆岩分层综放开采覆岩破坏高度研究[J].采矿与安全工程学报,2016,33(2):226-230. HAN Jun, ZHANG Hongwei, GAO Zhaoyu, et al. Failure height of weak overburden by layered fully-mechanized mining in extremely thick coal seam[J]. Journal of Mining & Safety Engineering, 2016, 33(2): 226-230.
[8] 许家林,王晓振,刘文涛,等.覆岩主关键层位置对导水裂隙带高度的影响[J].岩石力学与工程学报,2009,28(2):380-385. XU Jialin, WANG Xiaozhen, LIU Wentao, et al. Effects of primary key stratum location on height of water flowing fracture zone[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(2): 380-385.
[9] 李全生,鞠金峰,曹志国,等.基于导水裂隙带高度的地下水库适应性评价[J].煤炭学报,2017,42(8):2116-2124. LI Quansheng, JU Jinfeng, CAO Zhiguo, et al. Suitability evaluation of underground reservoir technology based on the discriminant of the height of water conduction fracture zone[J]. Journal of China Coal Society, 2017, 42(8): 2116-2124.
[10] 施龙青,辛恒奇,翟培合,等.大采深条件下导水裂隙带高度计算研究[J].中国矿业大学学报,2012,41(1):37-41. SHI Longqing, XIN Hengqi, ZHAI Peihe, et al. Calculating the height of water flowing fracture zone in deep mining[J]. Journal of China University of Mining & Technology, 2012, 41(1): 37-41.
[11] 钱鸣高,刘听成.矿山压力及其控制[M].北京:煤炭工业出版社,1991. [12] 刘天泉.矿山岩体采动影响与控制工程学及其应用[J].煤炭学报,1995,20(1):1-5. LIU Tianquan.Influence of mining activities on mine rock mass and control engineering[J]. Journal of China Coal Society, 1995, 20(1): 1-5.
[13] 来兴平,崔峰,曹建涛,等.三软煤层综放工作面覆岩垮落及裂隙导水特征分析[J].煤炭学报,2017,42(1):148-154. LAI Xingping, CUI Feng, CAO Jiantao, et al. Analysis on characteristics of overlying rock caving and fissure conductive water in top-coal caving working face at three soft coal seam[J]. Journal of China Coal Society, 2017, 42(1): 148-154.
[14] 李树刚,丁洋,安朝峰,等.近距离煤层重复采动覆岩裂隙形态及其演化规律试验研究[J].采矿与安全工程学报,2016,33(5):904-910. LI Shugang, DING Yang, AN Chaofeng, et al. Experimental research on the shape and dynamic evolution of repeated mining-induced fractures in short-distance coal seams[J]. Journal of Mining & Safety Engineering, 2016, 33(5): 904-910.
[15] 王新丰,高明中,李隆钦.深部采场采动应力、覆岩运移以及裂隙场分布的时空耦合规律[J].采矿与安全工程学报,2016,33(4):604-610. WANG Xinfeng, GAO Mingzhong, LI Longqin. Spatiotemporal coupling law of mining pressure,strata movement and fracture field distribution in deep stope[J]. Journal of Mining & Safety Engineering, 2016, 33(4): 604-610.
-
期刊类型引用(9)
1. 刘欣. 基于滑动平均滤波的矿用光离子化传感器设计. 煤矿机械. 2024(03): 11-13 . 
百度学术
2. 许伟健. 基于CAN总线和IAP的煤矿用传感器程序离线升级技术研究. 煤炭技术. 2024(06): 250-254 . 百度学术
3. 罗楚江，滕宪斌，王明峰，李聚保. 一种改进差分算法的远程升级系统设计. 工业控制计算机. 2024(06): 108-110+119 . 百度学术
4. 翟延忠，杨程锦，刘泽华，魏景新. 煤矿井下设备异构通信式远程升级技术. 煤炭技术. 2024(10): 203-208 . 百度学术
5. 王飞，刘芬. 基于RS485总线的IAP升级方法. 自动化与仪器仪表. 2023(02): 12-15 . 百度学术
6. 张杰建，党书东，张永生. 电梯外呼设备在线升级设计. 机电工程技术. 2023(06): 244-248 . 百度学术
7. 王俊秀. 矿用智能车载终端远程升级OTA系统设计. 煤矿机械. 2023(08): 207-209 . 百度学术
8. 马建，黄增波，李泽芳. 煤矿安全监控系统传感器在线升级技术研究. 煤矿安全. 2022(04): 135-139 . 本站查看
9. 刘瑞瑞. 提高CO传感器灵敏度的优化设计分析. 机械管理开发. 2022(10): 32-33+38 . 百度学术
其他类型引用(2)
计量
- 文章访问数: 57
- HTML全文浏览量: 0
- PDF下载量: 0
- 被引次数: 11
下载:
