(1. State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines，Anhui University of Science and Technology，Huainan，Anhui 232001，China；2. Geological Resources and Geological Engineering Post-Doctoral Flow Station，Anhui University of Science and Technology，Huainan，Anhui 232001，China；3. Chexplor Resource Exploration Technology Co.，Ltd.，Huaibei，Anhui 235000，China；4. School of Civil and Resources Engineering，University of
Science and Technology Beijing，Beijing 100083，China)
Abstract：To improve the reliability of rockburst prevention in the filling face of a deep coal seam and to ensure the stability of the surrounding rock structure in the stope and achieve safe mining，this study focuses on a filling face in a deep well with super-high water content in Shandong，China. Through a combination of theoretical analysis，numerical simulation，and field measurement，the spatial structure model and stability of the“goaf-coal pillar-key strata”T-type overlying rock structure during gob-side entry retaining mining were investigated. Furthermore，the reasonable coal pillar width considering both rockburst prevention and water-retaining performance of the filling body was explored. The results indicate that：(1) the coal pillar can effectively“isolate”the goaf and provide support to the key strata and their overlying spatial structure，under the conditions that meet the fracture line of the roof strata and the supporting strength factors. (2) The“goaf-coal pillar-key strata”forms an approximately T-shaped overlying rock spatial structure. The horizontal and vertical structures of this T-shaped model primarily undergo flexural and compressive deformation，respectively，with the coal pillar being the main structure controlling the stability of the T-type model. (3) The stability of the coal pillar in the filling face is mainly related to the static(dynamic) average supporting stress and its own bearing strength R. The overall impact-induced instability criterion or was established，based on which the reasonable width of the coal pillar was determined to be 10 meters. The theoretical model?s validity and the reliability of the analysis results were verified through field monitoring of microseismic activity，stress，and surface subsidence. The findings provide theoretical and practical value for the design of coal pillar width and rockburst prevention in the filling face of deep coal seams.
张 明1，2，3，魏凯祥1，年 宾3，姜福兴4，王 昆3，朱海虎1，胡 浩1. 深井冲击煤层充填工作面区段煤柱宽度研究[J]. 岩石力学与工程学报, 2025, 44(2): 316-330.
ZHANG Ming1，2，3，WEI Kaixiang1，NIAN Bin3，JIANG Fuxing4，WANG Kun3，ZHU Haihu1，HU Hao1. Study on the width of section coal pillar in filling face of coal seam with rockburst hazards in deep mine. , 2025, 44(2): 316-330.
[1] 潘一山，宋义敏，刘 军. 我国煤矿冲击地压防治的格局、变局和新局[J]. 岩石力学与工程学报，2023，42(9)：2 081–2 095.(PAN Yishan，SONG Yimin，LIU Jun. The pattern，change and new situation of coal mine rock burst prevention and control in China[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(9)：2 081– 2 095.(in Chinese))
[2] 王兆会，陈明振，李 强，等. 冲击地压矿井充填工作面超前采动应力对充填体充实率的反馈机制[J]. 煤炭学报，2024，49(4)： 1 804–1 818.(WANG Zhaohui，CHEN Mingzhen，LI Qiang，et al. Feedback mechanism of advanced mining stress on filling body filling rate in filling face of rock burst mine[J]. Journal of China Coal Society，2024，49(4)：1 804–1 818.(in Chinese))
[3] 张吉雄，缪协兴，郭广礼. 矸石(固体废物)直接充填采煤技术发展现状[J]. 采矿与安全工程学报，2009，26(4)：395–401.(ZHANG Jixiong，MIAO Xiexing，GUO Guangli. Development status of gangue (solid waste) direct filling coal mining technology[J]. Journal of Mining and Safety Engineering，2009，26(4)：395–401.(in Chinese))
[4] QI F，MA Z. Investigation of the roof presplitting and rock mass filling approach on controlling large deformations and coal bumps in deep high-stress roadways[J]. Latin American Journal of Solids and Structures，2019，16(4)：1–24.
[5] 李 猛，张吉雄，黄 鹏，等. 深井矸石充填采场顶板下沉控制因素及影响规律研究[J]. 采矿与安全工程学报，2022，39(2)：227–238.(LI Meng，ZHANG Jixiong，HUANG Peng，et al. Study on the control factors and influence law of roof subsidence in deep gangue filling stope[J]. Journal of Mining and Safety Engineering，2022，39(2)：227–238.(in Chinese))
[6] 赵兵朝，王京滨，张 晴，等. 侧限条件下充填体-煤柱耦合承载协同作用机制[J]. 煤炭学报，2023，48(12)：4 380–4 392.(ZHAO Bingchao，WANG Jingbin，ZHANG Qing，et al. Coupling mechanism of backfill-coal pillar under confined conditions[J]. Journal of China Coal Society，2023，48(12)：4 380–4 392.(in Chinese))
[7] 崔博强，白锦文，冯国瑞，等. 柱旁单侧充填煤充结构体的破坏响应特征与失稳机制[J]. 中南大学学报：自然科学版，2023，54(6)：2 431–2 446.(CUI Boqiang，BAI Jinwen，FENG Guorui，et al. Failure response characteristics and instability mechanism of coal-filled structure with unilateral filling beside the column[J]. Journal of Central South University：Natural Science，2023，54(6)：2 431–2 446.(in Chinese))
[8] 杨胜利，李 杨，王兆会，等. 充填体支撑作用下坚硬顶板运动模式与控制方法[J]. 采矿与安全工程学报，2023，40(5)：1 057–1 066. (YANG Shengli，LI Yang，WANG Zhaohui，et al. Motion mode and control method of hard roof under the support of filling body[J]. Journal of Mining and Safety Engineering，2023，40(5)：1 057–1 066.(in Chinese))
[9] 冯国瑞，赵永辉，郭育霞，等. 柱式充填体单轴压缩损伤演化及破坏特征研究[J]. 中南大学学报：自然科学版，2022，53(10)：4 012–4 023.(FENG Guorui，ZHAO Yonghui，GUO Yuxia，et al. Study on damage evolution and failure characteristics of cylindrical backfill under uniaxial compression[J]. Journal of Central South University：Natural Science，2022，53(10)：4 012–4 023.(in Chinese))
[10] 王方田，高 翔，冯光明，等. 深井煤层超高水充填工作面充填体—支架—煤体协同承载机制[J]. 采矿与安全工程学报，2022，39(4)：663–673.(WANG Fangtian，GAO Xiang，FENG Guangming，et al. Synergistic bearing mechanism of filling body-support-coal body in ultra-high water filling working face of deep coal seam[J]. Journal of Mining and Safety Engineering，2022，39(4)：663–673. (in Chinese))
[11] WU P，ZHAO J，JIN J. Similar simulation of overburden movement characteristics under paste filling mining conditions[J]. Scientific Reports，2023，13(1)，https：//doi.org/10.1038/s41598–023–39782–3.
[12] SADAT K F，HADI A，YOUSEFI R M，et al. An experimental study on the mechanical properties of underground mining backfill materials obtained from recycling of construction and demolition waste[J]. Case Studies in Construction Materials，2023，18：e02046.
[13] EHAB G，EL-NAGDY K A. Optimal backfilling materials with high compressive strength based on multiple linear regression[J]. Mining，Metallurgy and Exploration，2023，40(6)：2 183–2 191.
[14] 刘金海，姜福兴，王乃国，等. 深井特厚煤层综放工作面区段煤柱合理宽度研究[J]. 岩石力学与工程学报，2012，31(5)：921–927. (LIU Jinhai，JIANG Fuxing，WANG Naiguo，et al. Research on reasonable width of segment pillar of fully mechanized caving face inextra-thick coal seam of deep shaft[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(5)：921–927.(in Chinese))
[15] 何文瑞，何富连，陈冬冬，等. 坚硬厚基本顶特厚煤层综放沿空掘巷煤柱宽度与围岩控制[J]. 采矿与安全工程学报，2020，37(2)：349–358.(HE Wenrui，HE Fulian，CHEN Dongdong，et al. Coal pillar width and surrounding rock control of gob-side entry driving in extra-thick coal seam with hard and thick main roof[J]. Journal of Mining and Safety Engineering，2020，37(2)：349–358.(in Chinese))
[16] ZHU S，FENG Y，JIANG F. Determination of abutment pressure in coal mines with extremely thick alluvium stratum：a typical kind of rockburst mines in China[J]. Rock Mechanics and Rock Engineering，2016，49(5)：1 943–1 952.
[17] 钱鸣高，廖协兴，许家林. 岩层控制的关键层理论[M]. 徐州：中国矿业大学出版社，2003：59–88.(QIAN Minggao，LIAO Xiexing，XU Jialin. Key strata theory of strata control[M]. Xuzhou：China University of Mining and Technology Press，2003：59–88.(in Chinese))
[18] PENG K，YIN X，YIN G，et al. Galerkin solution of Winkler foundation-based irregular Kirchhoff plate model and its application in crown pillar optimization[J]. Journal of Central South University，2016，23(5)：1 253–1 263.
[19] 曹安业，白贤栖，蔡 武，等. 覆岩厚度变化应力异常机制及冲击矿压诱发机制[J]. 岩土工程学报，2023，45(3)：512–520.(CAO Anye，BAI Xianqi，CAI Wu，et al. Stress anomaly mechanism of overburden thickness change and induced mechanism of rock burst[J]. Chinese Journal of Geotechnical Engineering，2023，45(3)：512–520.(in Chinese))
[20] WANG P，JIANG J，ZHANG P，et al. Breaking process and mining stress evolution characteristics of a high-position hard and thick stratum[J]. International Journal of Mining Science and Technology，2016，26(4)：563–569.
[21] 许 斌，蒋金泉，代 进，等. 采场上覆关键层破断角的力学推导和实验模拟[J]. 煤炭学报，2018，43(3)：599–606.(XU Bin，JIANG Jinquan，DAI Jin，et al. Mechanical derivation and experimental simulation of fracture angle of overlying key strata in stope[J]. Journal of China Coal Society，2018，43(3)：599–606.(in Chinese))
[22] 朱广安，窦林名，丁自伟，等. 孤岛工作面采前冲击危险性预评估研究[J]. 岩土工程学报，2018，40(5)：819–827.(ZHU Guang?an，DOU Linming，DING Ziwei，et al. Pre-evaluation of rock burst risk before mining in island working face[J]. Chinese Journal of Geotechnical Engineering，2018，40(5)：819–827.(in Chinese))
[23] 窦林名，何 江，曹安业，等. 煤矿冲击矿压动静载叠加原理及其防治[J]. 煤炭学报，2015，40(7)：1 469–1 476.(DOU Linming，HEJiang，CAO Anye，et al. Rock burst prevention methods based on theory of dynamic and static combined load induced in coal mine[J]. Journal of China Coal Society，2015，40(7)：1 469–1 476.(in Chinese))
[24] ZHANG J，JIANG F，ZHU S，et al. Width design for gobs and isolated coal pillars based on overall burst-instability prevention in coal mines[J]. Journal of Rock Mechanics and Geotechnical Engineering，2016，8(4)：551–558.
[25] CHENG Y H，BAI J Z，MA Y K，et al. Control mechanism of rock burst in the floor of roadway driven along next goaf in thick coal seam with large obliquity angle in deep well[J]. Shock and Vibration，2015，DOI：10.1155/2015/750807.
[26] 张 明，成云海，王 磊，等. 浅埋复采工作面厚硬岩层–煤柱结构模型及其稳定性研究[J]. 岩石力学与工程学报，2019，38(1)：87–100.(ZHANG Ming，CHENG Yunhai，WANG Lei，et al. Research on thick and hard rock-coal pillar structure model and its stability in shallow mining face[J]. Chinese Journal of Rock mechanics and Engineering，2019，38(1)：87–100.(in Chinese))
[27] 中华人民共和国国家标准编写组. GB/T 25217.6—2019 冲击地压测定、监测与防治方法第6部分：钻屑监测方法[S]. 北京：中国标准出版社，2019.(The National Standards Compilation Group of People?s Republic of China. GB/T 25217.6—2019 Methods for test，monitoring and prevention of rockburst-Part 6：Monitoring method of drilling bits[S]. Beijing：Standards Press of China，2019.(in Chinese))
2025, Vol. 44 
