GAN Zhihui, SHANG Hui, DU Rongjun, ZHAN Huizhu. Mining subsidence analysis of gently inclined coal seams based on FLAC3D and DEM data[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(3): 158-166. DOI: 10.3969/j.issn.1001-1986.2021.03.020
Citation: GAN Zhihui, SHANG Hui, DU Rongjun, ZHAN Huizhu. Mining subsidence analysis of gently inclined coal seams based on FLAC3D and DEM data[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(3): 158-166. DOI: 10.3969/j.issn.1001-1986.2021.03.020

Mining subsidence analysis of gently inclined coal seams based on FLAC3D and DEM data

More Information
  • Received Date: November 05, 2020
  • Revised Date: April 13, 2021
  • Published Date: June 24, 2021
  • Shizuishan Mining Area in Ningxia Province is located in the western Yellow River. The subsidence of the mined-out area causes frequent surface ecological and environmental problems. The analysis of coal mining subsidence will play a positive role in environmental remediation the Yellow River Basin. Taking Shizuishan Coal Mine as an object to study the evolution characteristics of surrounding rock stress and displacement field of gently inclined coal seam, a three-dimensional numerical model of the gently inclined coal seam based on the numerical simulation software FLAC3D was established. The variation of stress, plastic zone, and displacement in the surrounding rocks in goaf were calculated and analyzed, and the surface displacement variation of the coal mining area was obtained from the bi-temporal images DEM superposition statistics which was verified with the numerical simulation results. The results showed that mining activities destroyed the stress balance of the surrounding rocks and causes stress redistribution. An obvious stress concentration appeared in the roof and coal pillar of the goaf. The maximum principal stress decreased gradually from coal seam roof to surface. The vertical displacements of the rock formation near the mining area were larger, and gradually decreased as it moved away from the mining area. After the end of three level coal seam mining, the maximum vertical displacement of the surface was about 12 m. With the increasing area of the mined-out area, the plastic zone around the mined-out area and corners gradually extended and expanded, which was mainly shear failure. The surface subsidence basin was asymmetric. The two subsidence centers occurred in the middle of the subsidence basin and downhill direction, and the influence range on downhill direction was larger than uphill direction. The settlement results and trends were basically consistent with both the numerical method and two-phase DEM overlay statistical analysis. The research results can provide a reference for safe mining activities and a new method for ground subsidence monitoring.
  • [1]
    钱鸣高, 缪协兴, 许家林. 岩层控制中的关键层理论研究[J]. 煤炭学报, 1996, 21(3): 225-230. DOI: 10.3321/j.issn:0253-9993.1996.03.001

    QIAN Minggao, MIAO Xiexing, XU Jialin. Theoretical study of key stratum in ground control[J]. Journal of China Coal Society, 1996, 21(3): 225-230. DOI: 10.3321/j.issn:0253-9993.1996.03.001
    [2]
    吴立新, 王金庄. 连续大面积开采托板控制岩层变形模式的研究[J]. 煤炭学报, 1994, 19(3): 233-242. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB403.001.htm

    WU Lixin, WANG Jinzhuang. Study of deformation model of a controlling holding-plate when large area is extracted continuously[J]. Journal of China Coal Society, 1994, 19(3): 233-242. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB403.001.htm
    [3]
    钱鸣高, 缪协兴, 何富连. 采场"砌体梁"结构的关键块分析[J]. 煤炭学报, 1994, 19(6): 557-563. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB406.000.htm

    QIAN Minggao, MIAO Xiexing, HE Fulian. Analysis of key block in the structure of voussoir beam in longwall mining[J]. Journal of China Coal Society, 1994, 19(6): 557-563. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB406.000.htm
    [4]
    麻凤海, 丁彧. 大倾角多煤层开采地表移动规律的数值模拟研究[J]. 中国矿业, 2009, 18(6): 71-73. DOI: 10.3969/j.issn.1004-4051.2009.06.021

    MA Fenghai, DING Yu. Numerical simulation of ground movement behavior inclined multiple seams mining with deep dip angle[J]. China Mining Magazine, 2009, 18(6): 71-73. DOI: 10.3969/j.issn.1004-4051.2009.06.021
    [5]
    刘飞, 胡斌, 宋丹, 等. 苏家里新村地面及建筑物裂缝成因分析[J]. 煤田地质与勘探, 2015, 43(6): 87-91. DOI: 10.3969/j.issn.1001-1986.2015.06.018

    LIU Fei, HU Bin, SONG Dan, et al. The genetic analysis of cracks of the ground and buildings in New Sujiali Village[J]. Coal Geology & Exploration, 2015, 43(6): 87-91. DOI: 10.3969/j.issn.1001-1986.2015.06.018
    [6]
    黎良杰, 钱鸣高, 殷有泉. 采场底板突水相似材料模拟研究[J]. 煤田地质与勘探, 1997, 25(1): 33-36. http://mdkt.cbpt.cnki.net/WKD/WebPublication/paperDigest.aspx?paperID=6e695471-fdcf-49e5-90c3-e176c14c0db9

    LI Liangjie, QIAN Minggao, YIN Youquan. Research on the tests of water-inrush from floor simulated by similar materials[J]. Coal Geology & Exploration, 1997, 25(1): 33-36. http://mdkt.cbpt.cnki.net/WKD/WebPublication/paperDigest.aspx?paperID=6e695471-fdcf-49e5-90c3-e176c14c0db9
    [7]
    张杰, 侯忠杰. 浅埋煤层非坚硬顶板强制放顶实验研究[J]. 煤田地质与勘探, 2005, 33(2): 15-17. DOI: 10.3969/j.issn.1001-1986.2005.02.005

    ZHANG Jie, HOU Zhongjie. Experimental research on non-hard overhead caving in shallow buried coal seam[J]. Coal Geology & Exploration, 2005, 33(2): 15-17. DOI: 10.3969/j.issn.1001-1986.2005.02.005
    [8]
    许家林, 钱鸣高, 朱卫兵. 覆岩主关键层对地表下沉动态的影响研究[J]. 岩石力学与工程学报, 2005, 24(5): 787-791. DOI: 10.3321/j.issn:1000-6915.2005.05.009

    XU Jialin, QIAN Minggao, ZHU Weibing. Study on influences of primary key stratum on surface dynamic subsidence[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(5): 787-791. DOI: 10.3321/j.issn:1000-6915.2005.05.009
    [9]
    尹光志, 鲜学福, 代高飞, 等. 大倾角煤层开采岩移基本规律的研究[J]. 岩土工程学报, 2001, 23(4): 450-453. DOI: 10.3321/j.issn:1000-4548.2001.04.014

    YIN Guangzhi, XIAN Xuefu, DAI Gaofei, et al. Basic behaviour of strata movement in seam with deep dip angle[J]. Chinese Journal of Geotechnical Engineering, 2001, 23(4): 450-453. DOI: 10.3321/j.issn:1000-4548.2001.04.014
    [10]
    孙学阳, 张齐, 李成, 等. 陕北某矿双煤层开采对覆岩影响的模拟对比[J]. 煤田地质与勘探, 2020, 48(4): 183-189. DOI: 10.3969/j.issn.1001-1986.2020.04.025

    SUN Xueyang, ZHANG Qi, LI Cheng, et al. Overburden failure simulation under double coal seams mining in a coal mine in north Shaanxi Province[J]. Coal Geology & Exploration, 2020, 48(4): 183-189. DOI: 10.3969/j.issn.1001-1986.2020.04.025
    [11]
    孙学阳, 卢明皎, 李成, 等. 双煤层错距开采优选及对隔水关键层影响研究[J]. 采矿与安全工程学报, 2021, 38(1): 51-57.

    SUN Xueyang, LU Mingjiao, LI Cheng, et al. Optimal selection of staggered distance mining in double seams and its influence on water-resisting key strata[J]. Journal of Mining & Safety Engineering, 2021, 38(1): 51-57.
    [12]
    王永国, 王明, 许蓬. 巴彦高勒煤矿3-1煤层顶板垮落裂缝带发育特征[J]. 煤田地质与勘探, 2019, 47(增刊1): 37-42. http://mdkt.cbpt.cnki.net/WKD/WebPublication/paperDigest.aspx?paperID=1f910b9f-405e-416d-af49-36a1fd73753e

    WANG Yongguo, WANG Ming, XU Peng. Characteristics of collapsed fractured zone development of No. 3-1 seam roof in Bayangaole Coal Mine[J]. Coal Geology & Exploration, 2019, 47(Sup. 1): 37-42. http://mdkt.cbpt.cnki.net/WKD/WebPublication/paperDigest.aspx?paperID=1f910b9f-405e-416d-af49-36a1fd73753e
    [13]
    王永国, 王明, 刘增平, 等. 巴彦高勒煤矿多相变沉积条件下煤层顶板含水层富水性特征[J]. 煤田地质与勘探, 2019, 47(增刊1): 56-61. http://mdkt.cbpt.cnki.net/WKD/WebPublication/paperDigest.aspx?paperID=c9393f67-8025-4ca5-9889-1005537ce578

    WANG Yongguo, WANG Ming, LIU Zengping, et al. Water enrichment characteristics of roof aquifer under conditions of multi-facie sedimentation in Bayangaole Coal Mine[J]. Coal Geology & Exploration, 2019, 47(Sup. 1): 56-61. http://mdkt.cbpt.cnki.net/WKD/WebPublication/paperDigest.aspx?paperID=c9393f67-8025-4ca5-9889-1005537ce578
    [14]
    黄庆享, 杜君武, 侯恩科, 等. 浅埋煤层群覆岩与地表裂隙发育规律和形成机理研究[J]. 采矿与安全工程学报, 2019, 36(1): 7-15. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL201901002.htm

    HUANG Qingxiang, DU Junwu, HOU Enke, et al. Research on overburden and ground surface cracks distribution and formation mechanism in shallow coal seams group mining[J]. Journal of Mining & Safety Engineering, 2019, 36(1): 7-15. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL201901002.htm
    [15]
    黄庆享, 韩金博. 浅埋近距离煤层开采裂隙演化机理研究[J]. 采矿与安全工程学报, 2019, 36(4): 706-711. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL201904008.htm

    HUANG Qingxiang, HAN Jinbo. Study on fracture evolution mechanism of shallow-buried close coal seam mining[J]. Journal of Mining & Safety Engineering, 2019, 36(4): 706-711. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL201904008.htm
    [16]
    尚慧. 宁夏矿山地质环境评价与动态监测分析[D]. 西安: 长安大学, 2013.

    SHANG Hui. Assessment and dynamic monitoring of mining geo-environment in Ningxia[D]. Xi'an: Chang'an University, 2013.
    [17]
    尚慧, 倪万魁. 石嘴山矿区地表环境动态变化遥感监测[J]. 国土资源遥感, 2013, 25(2): 113-120. https://www.cnki.com.cn/Article/CJFDTOTAL-GTYG201302021.htm

    SHANG Hui, NI Wankui. Remote sensing monitoring of dynamic changes of surface environment in Shizuishan mining area[J]. Remote Sensing for Land and Resources, 2013, 25(2): 113-120. https://www.cnki.com.cn/Article/CJFDTOTAL-GTYG201302021.htm
    [18]
    谢和平, 周宏伟, 王金安, 等. FLAC在煤矿开采沉陷预测中的应用及对比分析[J]. 岩石力学与工程学报, 1999, 18(4): 397-401. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX904.007.htm

    XIE Heping, ZHOU Hongwei, WANG Jin'an, et al. Application of FLAC to predict ground surface displacements due to coal extraction and its comparative analysis[J]. Chinese Journal of Rock Mechanics and Engineering, 1999, 18(4): 397-401. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX904.007.htm
    [19]
    武崇福, 刘东彦, 方志. FLAC3D在采空区稳定性分析中的应用[J]. 河南理工大学学报(自然科学版), 2007, 26(2): 136-140. https://www.cnki.com.cn/Article/CJFDTOTAL-JGXB200702005.htm

    WU Chongfu, LIU Dongyan, FANG Zhi. The application of FLAC3D in the analysis on stability of the waste cave[J]. Journal of Henan Polytechnic University(Natural Science), 2007, 26(2): 136-140. https://www.cnki.com.cn/Article/CJFDTOTAL-JGXB200702005.htm
    [20]
    李克妮, 张军, 吴鹏, 等. 深埋高地温水工隧洞开挖损伤区特征及分布规律研究[C]//第29届全国结构工程学术会议论文集(第Ⅱ册). 武汉: 2020: 24-31.

    LI Keni, ZHANG Jun, WU Peng, et al. Study on characteristics and distribution law of excavation damage zone of deep-buried high temperature warm water tunnel[C]//Proceedings of the 29th National Conference on Structural Engineering(No. Ⅱ). Wuhan: 2020: 24-31.
  • Related Articles

    [1]YAN Yunxiang, LI Pei, ZHI Min, LIU Jianda, WANG Zichen, ZHANG Ying, PEI Gendi, LI Linyuan, MOU Qi, JIA Jin. Optimization of data acquisition parameters for deep seismic reflection surveys in complex terrain[J]. COAL GEOLOGY & EXPLORATION.
    [2]YAN Yunxiang, LI Pei, ZHI Min, LIU Jianda, WANG Zichen, ZHANG Ying, PEI Gendi, LI Linyuan, MOU Qi, JIA Jin. Optimization of data acquisition parameters for deep seismic reflection surveys in complex terrain[J]. COAL GEOLOGY & EXPLORATION, 2023, 51(12): 83-92. DOI: 10.12363/issn.1001-1986.23.10.0629
    [3]SHI Xianxin, LIU Qiang, HU Jiwu, WANG Pan, LIAN Chenguang, JIA Qian, ZHANG Miaomiao, NIE Ailan. A 3D seismic physical modeling system of large double triaxial air-supported positioning and multichannel data acquisition and its application[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(6): 81-86. DOI: 10.3969/j.issn.1001-1986.2021.06.009
    [4]WANG Huaixiu, QIU Shuai, ZHU Guowei, CHEN Bo. Three-component seismic data acquisition system of coal mine based on MEMS and LwIP[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(4): 8-14. DOI: 10.3969/j.issn.1001-1986.2021.04.002
    [5]DUAN Jianhua, WANG Yunhong, WANG Baoli. Development of data acquisition and control software for seismic monitoring with mining[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(3): 35-40. DOI: 10.3969/j.issn.1001-1986.2019.03.007
    [6]SHEN Jing-jing, WU Xiao-ming, WANG Peng, LU Gui-ying, HU Yu-le, NIU Hong-liang. Design and implementation of HDD rig condition Data Detector[J]. COAL GEOLOGY & EXPLORATION, 2009, 37(6): 77-80.
    [7]WU Lai-jie, MENG Gao-tou, WANG Jun-ping, YAO Deng-you, LIU Chuan. Data acquisition system of piezocone penetration test(CPTU)[J]. COAL GEOLOGY & EXPLORATION, 2006, 34(2): 64-66.
    [8]Meng Xiande. THE METHOD OF DATA ACQUISITION AND DESIGN OF THREE-DIMENSIONAL IN LAKE REGIONS[J]. COAL GEOLOGY & EXPLORATION, 1999, 27(S1): 55-57.
    [9]Guo Aihuang. REAL TIME DATA ACQUISITION AND PROCESSING SYSTEM AND ITS APPLICATION[J]. COAL GEOLOGY & EXPLORATION, 1999, 27(1): 60-63.
    [10]Qiu Xingguo, Luo Yi, Sai Yunxiu. THE IMPROVEMENT OF THE DATA ACQUISITION METHOD IN TYSC-3Q TYPE LOGGING TOOL[J]. COAL GEOLOGY & EXPLORATION, 1998, 26(3): 57-60.

Catalog

    Article Metrics

    Article views (253) PDF downloads (39) Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return