| 层状岩体受压力学特征结构面效应数值分析 |
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| 引用本文： | 鲁海峰,姚多喜,沈丹,温亮,王康.层状岩体受压力学特征结构面效应数值分析[J].淮南工业学院学报,2014(1):24-29. |
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| 作者姓名： | 鲁海峰 姚多喜 沈丹 温亮 王康 |
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| 作者单位： | [1]安徽理工大学地球与环境学院,安徽淮南232001 [2]煤炭资源与安全开采国家重点实验室（中国矿业大学）,北京100083 |
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| 基金项目： | 基金项目：国家自然科学基金资助项目（51174256）;中国矿业大学煤炭资源与安全开采国家重点实验室开放基金资助项目（SKLCRSM13KFB01）;2012年安徽理工大学硕博基金资助项目（201211160）;2012年国家大学生创新创业计划项目基金资助（201210261006）;2013年安徽理工大学青年教师科学研究资助项目（QN201308） |
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| 摘 要： | 煤层底板岩体是沉积岩，具有显著的层状结构特点。为研究层状岩体压缩强度的结构面效应，通过FLAC3D数值软件，结合改进的遍布节理本构模型，建立层状岩体压缩数值模型，分析单轴、三轴压缩情况下的应力应变响应以及强度特征。研究结果表明：层状岩体压缩强度具有显著的结构面倾角效应。随着倾角的增大，层状岩体的压缩强度呈现先减小后增大的趋势。当结构面倾角为40＆#176;～80＆#176;时，岩体强度整体较低，破裂面主要沿结构面展开。数值试验和理论分析反映的岩体强度随结构面倾角变化规律一致。层状岩体弹性模量沿平行于结构面方向最大，而垂直于结构面方向最小，并随结构面与水平面之间夹角的增加而增大。
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| 关 键 词： | 层状岩体 数值模拟 压缩破坏 结构面 |
Numerical Simulation of Structure Plane Effect for Mechanical Chaiacteristics of Layered Rock Mass Subjected to Compression |
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| LU Hai-feng,YAO Duo-xi,SHEN Dan,WEN Liang,WANG Kang.Numerical Simulation of Structure Plane Effect for Mechanical Chaiacteristics of Layered Rock Mass Subjected to Compression[J].Journal of Huainan Institute of Technology(Natural Science),2014(1):24-29. |
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| Authors: | LU Hai-feng YAO Duo-xi SHEN Dan WEN Liang WANG Kang |
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| Affiliation: | 1. School of Earth Science and Environmental Engineering,Anhui University of Science and Technology,Huainan Anhui 232001, China; 2. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083, China) |
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| Abstract: | Coal seam floor rock mass is sedimentary rock and has obvious characteristics of layered structure .In order to study the structural plane effect on compressive strength of layered rock mass , the stress-strain response and strength characteristic of layered rock mass under uniaxial compression and triaxial compression were ana -lyzed by numerical simulation with FLAC 3D .The results showed that compressive strength of layered rock mass has remarkable effect of layer plane dip .The compressive strength of rock mass first decreases and then increases with the increase of structure plane dip angle .When the structure plane dip angle is 40 ＆#176;~80 ＆#176;, the strength of rock mass is low and the fracture plane develops in the structure plane .Numerical experiments and theoretical a-nalysis gave the consistent regularity of rock strength with structural plane dip variation .The maximum elastic modulus of layered rock mass is parallel to structural plane and the minimum in the direction perpendicular to the structural plane , and increases with the angle rise between the structural plane and the horizontal plane . |
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| Keywords: | layered rock mass numerical simulation compressive failure structural plane |
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