刘启蒙¹,刘瑜²,张缓缓³
LIU Qimeng¹, LIU Yu², ZHANG Huanhuan³

• 1:安徽理工大学地球与环境学院，安徽 淮南 232001
• 2:中国矿业大学资源与地球科学学院，江苏 徐州 221116
• 3:江西煤田地质局 224 队，江西 新余 336600

摘要(Abstract)：

传统采动破坏深度计算中认为底板结构完整，未考虑实际岩体损伤。以淮南潘北矿11113工作面A组煤开采为背景，利用FLAC^3D对完整与损伤底板采动应力变化特征进行了分析，推导并计算了底板岩层损伤变量与底板破坏深度。此外，为验证该方法的有效性，对比分析了计算结果与测量结果。结果表明：采动应力的最大值出现在煤壁前后方，底板完整时为14.8 MPa，底板损伤时为17.5 MPa；底板岩层损伤变量D为0.574，基于损伤变量计算得出的底板最大破坏深度为16.15 m，对比并行电法探测结果16.00 m，该方法的计算准确率高。研究结果为快速准确确定底板采动破坏深度提供了一个新思路。
In the traditional calculation of mining failure depth, it is considered that the floor structure is intact and the actual rock mass damage is not taken into account. Taking the Panbei mine working face 11113 as the background, the integrity and damage of floor mining stress changes were analyzed by FLAC^3D. The damage variable of floor rock and the failure depth of bottom plate were deduced and calculated. In order to verify the effectiveness of the method, the calculation results were compared and analyzed with measurement results. The results show that the maximum value of the mining stress appears in the front and rear of the coal wall. When the floor is intact, it is 14.8 MPa, and it is 17.5 MPa when the floor is damaged. The damage variable of the floor rock is 0.574. Based on the damage variable, the maximum failure depth of the floor is 16.15 m. Comparing the results of parallel electrical prospecting of 16.00 m, the method is accurate in calculation. The research results can provide a new idea for determining the failure-depth of the floor mining rapidly and accurately.

关键词(KeyWords)： 岩体损伤;破坏深度;数值模型;电法勘探技术
rock mass damage;failure depth;numerical model;electrical prospecting technique

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（41472235）；安徽省高等学校省级自然科学研究重大项目（KJ2014ZD11）

作者(Author): 刘启蒙¹,刘瑜²,张缓缓³
LIU Qimeng¹, LIU Yu², ZHANG Huanhuan³

DOI: 10.3969/j.issn.1001-1986.2017.06.020

参考文献(References)：

• [1] 王启云. 矿井防治水工作研究[J]. 煤炭技术,2010,29(1):127-128. WANG Qiyun. Research on prevention and treatment of mine water[J]. Coal Technology,2010,29(1):127-128.
  [2] 乔伟,李文平,赵成喜. 煤矿底板突水评价突水系数-单位涌水量法[J]. 岩石力学与工程学报,2009,28(12):2466-2474. QIAO Wei,LI Wenping,ZHAO Chengxi. Water inrush coefficient-unit inflow method for water inrush evaluation for coal mine floor[J]. Chinese Journal of Rock Mechanics and Engineering,2009,28(12):2466-2474.
  [3] 张蕊,姜振泉,李秀晗. 大采深厚煤层底板采动破坏深度[J]. 煤炭学报,2013,38(1):67-72. ZHANG Rui,JIANG Zhenquan,LI Xiuhan. Study on the failure depth of thick seam floor in deep mining[J]. Journal of China Coal Society,2013,38(1):67-72.
  [4] 刘其声. 关于突水系数的讨论[J]. 煤田地质与勘探,2009, 37(4):34-37. LIU Qisheng. A discussion on water inrush cofficient[J]. Coal Geology & Exploration,2009,37(4):34-37.
  [5] LI Wenping,LIU Yu,QIAN Wei,et al. An improved vulnerability assessment model for floor water bursting from a confined aquifer based on the water inrush coefficient method[J]. Mine Water & the Environment,2017. DOI 10.1007/s10230-017-0463-3.
  [6] 武强,张波,赵文德. 煤层底板突水评价的新型实用方法-基于GIS的ANN型、证据权型、Logistic回归型脆弱性指数法的比较[J]. 煤炭学报,2013,38(1):21-26. WU Qiang,ZHANG Bo,ZHAO Wende. A new practical methodology of coal seam floor water burst evaluation:The comparison study among ANN the weight of evidence and the logistic regression vulnerable index method based on GIS[J]. Journal of China Coal Society,2013,38(1):21-26.
  [7] 李鹏飞,刘启蒙,陈秀艳. 近厚松散层开采煤层底板采动破坏研究[J]. 煤炭技术,2017,36(4):69-70. LI Pengfei,LIU Qimeng,CHEN Xiuyan. Study on mining destruction of coal seam floor near thick loose layer[J]. Coal Technology,2017,36(4):69-70.
  [8] 张忠文. 青东煤矿10煤层底板岩体结构特征及突水危险性研究[D]. 淮南:安徽理工大学,2014.
  [9] 施龙青,韩进,高延法. 采场损伤底板破坏深度研究[J]. 煤炭学报,2004,29(增刊1):1-4. SHI Longqing,HAN Jin,GAO Yanfa. Study on failure depth of stope damage floor[J]. Journal of China Coal Society,2004, 29(S1):1-4.
  [10] 武昱东,琚宜文,侯泉林. 断层分层信息维及其在深部煤炭开采地质条件预测中的应用[J]. 煤炭学报,2010,35(8):1323-1330. WU Yudong,JU Yiwen,HOU Quanlin. Application of fault's information dimensions among different coal seams in the prediction of deep coal resources exploitation[J]. Journal of China Coal Society,2010,35(8):1323-1330.
  [11] 贾晓亮,崔洪庆,张子敏. 断层端部地应力影响因素数值分析[J]. 煤田地质与勘探,2010,38(4):47-51. JIA Xiaoliang,CUI Hongqing,ZHANG Zimin. Numerical simulation of geostatic stress influencing factor at the end of fault[J]. Coal Geology & Exploration,2010,38(4):47-51.
  [12] 李兴高,高延法. 采场底板岩层破坏与损伤分析[J]. 岩石力学与工程学报,2003,22(1):35-39. LI Xinggao,GAO Yanfa. Damage analysis of floor strata[J]. Chinese Journal of Rock Mechanics and Engineering,2003, 22(1):35-39.
  [13] 陆银龙,王连国. 含断层煤层底板损伤破坏演化数值模拟及微震监测研究[J]. 采矿与安全工程学报,2013,30(1):38-44. LU Yinlong,WANG Lianguo. Modeling and micro seismic monitoring of damage and failure evolution of faulty coal seam floor[J]. Journal of Mining & Safety Engineering,2013,30(1):38-44.
  [14] 张培森,颜伟,张文泉,等. 固液耦合模式下含断层缺陷煤层回采诱发底板损伤及断层活化突水机制研究[J]. 岩土工程学报,2016,38(5):877-889. ZHANG Peisen,YAN Wei,ZHANG Wenquan,et al. Mechanism of water inrush due to damage of floor and fault activation induced by mining coal seam with fault defects under fluid-solid coupling mode[J]. Chinese Journal of Geotechnical Engineering, 2016,38(5):877-889.
  [15] 金解放,李夕兵,殷志强,等. 循环冲击下波阻抗定义岩石损伤变量的研究[J]. 岩土力学,2011,32(5):1385-1393. JIN Jiefang,LI Xibing,YIN Zhiqiang,et al. A method for defining rock damage variable by wave impedance under cyclic impact loadings[J]. Rock and Soil Mechanics,2011,32(5):1385-1393.
  [16] 于海祥,武建华,李强. 一维损伤变量的合理定义方法[J]. 重庆大学学报,2008,31(11):1261-1266. YU Haiyang,WU Jianhua,LI Qiang. A rational method for defining damage variables in one dimension[J]. Journal of Chongqing University,2008,31(11):1261-1266.
  [17] 张全胜,杨更社,任建喜. 岩石损伤变量及本构方程的新探讨[J]. 岩石力学与工程学报,2003,22(1):30-34. ZHANG Quansheng,YANG Gengshe,REN Jianxi. New study of damage variable and constitutive equation of rock[J]. Chinese Journal of Rock Mechanics and Engineering,2003,22(1):30-34.
  [18] 刘红岩, 李俊峰. 非贯通节理岩体损伤变量计算方法研究[J]. 岩土力学,2016(增刊1):95-100. LIU Hongyan,LI Junfeng. A method for calculating damage variable of rock mass with non-persistent joints[J]. Rock and Soil Mechanics,2016(S1):95-100.
  [19] 唐鑫,姜振泉,雷娟,等. 深部开采煤层底板采动变形破坏规律研究[J]. 矿业安全与环保,2013(4):8-10. TANG Xin,JIANG Zhenquan,LEI Juan,et al. Study on floor deformation and failure law of deep mining coal seam[J]. Mining Safety & Environmental Protection,2013(4):8-10.
  [20] 朱术云,曹丁涛,周海洋. 采动底板岩性及组合结构对破坏深度的制约作用[J]. 采矿与安全工程学报,2014,31(1):90-96. ZHU Shuyun, CAO Dingtao, ZHOU Haiyang. Restrictive function of lithology and its composite structure on deformation and failure depth of mining coal seam floor[J]. Journal of Mining & Safety Engineering,2014,31(1):90-96.
  [21] 黎良杰,钱鸣高. 采场底板突水相似材料模拟研究[J]. 煤田地质与勘探,1997,(1):33-36. LI Liangjie,QIAN Minggao. Similar material simulation of water inrush from stope floor[J]. Coal Geology & Exploration, 1997,25(1):33-36.
  [22] 李海梅,关英斌,杨大兵. 邯邢地区煤层底板应力分布的相似材料模拟分析[J]. 矿业安全与环保,2007,34(6):24-25. LI Haimei,GUAN Yingbin,YANG Dabing. Handan Xingtai area coal seam floor stress distribution of similar material simulation and analysis[J]. Mining Safety & Environmental Protection, 2007,34(6):24-25.
  [23] 张平松,刘盛东,舒玉峰. 煤层开采覆岩破坏发育规律动态测试分析[J]. 煤炭学报,2011,36(2):217-222. ZHANG Pingsong,LIU Shengdong,SHU Yufeng. Analysis on dynamic testing results of distortion and collapsing of the top rock by geophysical method during mining of coal seam[J]. Journal of China Coal Society,2011,36(2):217-222.

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