[1]王学滨,祝铭泽,岑子豪.常村煤矿S6-8工作面岩层运动的连续-非连续方法模拟[J].中国安全生产科学技术,2020,16(7):82-87.[doi:10.11731/j.issn.1673-193x.2020.07.013]
WANG Xuebin,ZHU Mingze,CEN Zihao.Simulation on strata motion of S6-8 working face in Changcun coal mine with continuumdiscontinuum method[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(7):82-87.[doi:10.11731/j.issn.1673-193x.2020.07.013]
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常村煤矿S6-8工作面岩层运动的连续-非连续方法模拟
WANG Xuebin,ZHU Mingze,CEN Zihao.Simulation on strata motion of S6-8 working face in Changcun coal mine with continuumdiscontinuum method[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(7):82-87.[doi:10.11731/j.issn.1673-193x.2020.07.013]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 16
- 期数:
- 2020年7期
- 页码:
- 82-87
- 栏目:
- 职业安全卫生管理与技术
- 出版日期:
- 2020-07-30
文章信息/Info
- Title:
- Simulation on strata motion of S6-8 working face in Changcun coal mine with continuumdiscontinuum method
- 文章编号:
- 1673-193X(2020)-07-0082-06
- 关键词:
- 连续-非连续方法; 应力跌落; 准静力计算; 变形-开裂-运动过程; 周期垮落
- Keywords:
- continuum-discontinuum method; stress drop; quasi-static calculation; deformation-cracking-motion process; periodic collapse
- 分类号:
- X936
- 文献标志码:
- A
- 摘要:
- 为了细致地模拟煤矿开采中复杂的岩层运动现象，探讨开采速度的影响，采用自主开发的连续-非连续方法，通过引入应力跌落和准静力计算模式，以常村煤矿S6-8工作面为背景建立数值模型，模拟采动诱发采场上覆岩层的变形-开裂-运动过程。结果表明：本方法可较为细致地模拟煤矿开采中一系列复杂现象，例如，采场上覆岩层的弯曲变形、下沉、开裂、离层和层间错动、直接顶的周期垮落、工作面煤壁上方岩层近似平行展布的倾斜穿层裂缝、若干破断岩块形成的近似等腰梯形结构和采空区局部闭合；开采速度越快，直接顶初次垮距越大，这是由于采场上覆岩层向下运动不充分，直接顶垮落主要受自身和开采卸荷的影响。
- Abstract:
- In order to simulate the complex phenomenon of strata motion during the mining of coal mine in detail,and discuss the influence of mining velocity,through applying the self-developed continuum-discontinuum method and introducing into the stress drop and quasi-static calculation mode,a numerical model was established by taking the S6-8 working face in Changcun coal mine as the background,and the deformationcrackingmotion process of overlying strata in the stope induced by mining was simulated.The results showed that this method could simulate a series of complex phenomena during the mining of coal mine in detail,such as the bending deformation,subsidence,cracking,abscising layer and shear movement of overlying strata in the stope,the periodic collapse of immediate roof,the inclined across-layer fracture with approximately parallel traversing in the strata above the coal wall of working face,the approximately isosceles trapezoid structure formed by some fracturing rock block,and the local closure of goaf.The faster the mining velocity,the larger the first collapse distance of immediate roof,which was due to the downward motion of overlying strata in the stope was insufficient,and the collapse of immediate roof was mainly affected by itself and mining unloading.
参考文献/References:
［1］JING L,HUDSON J A.Numerical methods in rock mechanics［J］.International Journal of Rock Mechanics and Mining Science,2002,39（4）:402-427.
［2］PALUSZNY A,ZIMMERMAN R W.Modeling of primary fragmentation in block caving mines using a finite-element based fracture mechanics approach［J］.Geomechanics and Geophysics for Geo-Energy and Geo-Resources,2017,3(2):121-130.
［3］王志强,徐春虎,任亚军,等.孤岛工作面支承压力影响下顶板破坏机理研究［J］.中国安全生产科学技术,2019,15(6):105-112.
WANG Zhiqiang,XU Chunhu,REN Yajun,et al.Study on roof failure mechanism of isolated island working face under abutment pressure［J］.Journal of Safety Science and Technology,2019,15(6):105-112.
［4］JIN A B,SUN H,MA G W,et al.A study on the draw laws of caved ore and rock using the discrete element method［J］.Computers and Geotechnics,2016,80:59-70.
［5］李春意,车宇航,王石岩.煤矿开采地表沉陷盆地边界的再认识［J］.中国安全生产科学技术,2018 14(12):84-89.
LI Chunyi,CHE Yuhang,WANG Shiyan.Reconsideration of surface subsidence basin boundary induced by coal mining［J］.Journal of Safety Science and Technology,2018,14(12):84-89.
［6］LOLLINO P,ANDRIANI G F.Role of brittle behaviour of softcalcarenites under low confinement:Laboratory observations and numerical investigation［J］.Rock Mechanics and Rock Engineering,2017,50(7):1863-1882.
［7］FENG C,LI S H,LIU X Y,et al.Semi-spring and semi-edge combined contact model in CDEM and its application to analysis of Jiweishan landslide［J］.Journal of Rock Mechanics and Geotechnical Engineering,2014,6(1):26-35.
［8］王学滨.拉格朗日元方法、变形体离散元方法及虚拟裂纹模型耦合的连续-非连续介质分析方法研究［R］.北京:中国矿业大学(北京),2015.
［9］郭翔,王学滨,白雪元,等.加载方式及抗拉强度对巴西圆盘试验影响的数值模拟［J］.岩土力学,2017,38(1):214-220.
GUO Xiang,WANG Xuebin,BAI Xueyuan,et al.Numerical simulation of effects of loading types and tensile strengths on Brazilian disk test［J］.Rock and Soil Mechanics,2017,38(1):214-220.
［10］王学滨,郭翔,芦伟男,等.单层采动诱发长壁开采水平岩层开裂、冒落过程模拟—基于连续-非连续方法［J］.防灾减灾工程学报,2018,38(1):1-6.
WANG Xuebin,GUO Xiang,LU Weinan,et al.Modeling of cracking and caving of horizontal strata induced by the excavation of a single stratum in long-wall mining—Based on a continuum-discontinuum method［J］.Journal of Disaster Prevention and Mitigation Engineering,2018,38(1):1-6.
［11］王学滨,白雪元,祝铭泽,等.拉格朗日元与虚拟裂缝模型耦合方法及准脆性材料拉伸试验模拟［J］.应用力学学报,2019,36(6):1367-1374.
WANG Xuebin,BAI Xueyuan,ZHU Mingze,et al.A method coupled by the Lagrangian element and the fictitious crack model and modeling of tensile tests of quasibrittle materials［J］.Chinese Journal of Applied Mechanics,2019,36(6):1367-1374.
［12］MUNJIZA A.The combined finite-discrete element method［M］.London:John Wiley & Sons,2004.
［13］严成增,孙冠华,郑宏,等.三维FEM/DEM中摩擦力的实施及验证［J］.岩石力学与工程学报,2014,33(6):1248-1256.
YAN Chengzeng,SUN Guanhua,ZHENG Hong,et al.Implementation and verification of friction in 3D FEM/DEM［J］.Chinese Journal of Rock Mechanics and Engineering,2014,33(6):1248-1256.
［14］金力波.常村煤矿切顶卸压护巷技术研究［D］.太原:太原理工大学,2018.
［15］钱鸣高,石平五,许家林.矿山压力与岩层控制［M］.徐州:中国矿业大学出版社,2015.
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备注/Memo
- 备注/Memo:
-
收稿日期： 2020-03-09
* 基金项目： 国家自然科学基金项目(51874162)
作者简介： 王学滨，博士，教授，主要研究方向为工程材料变形、破坏及稳定性。
