摘要
为了研究断层破碎带在采动影响下的变形破坏失稳过程,采用电镜、薄片分析及蠕变力学试验方法分别对范各庄矿F0断层物质的原样和3种含水量、5组样品的复制样进行了分析研究。在力学实验的基础上,借助数值仿真软件FLAC3D完成了对断层破碎带变形破坏失稳过程的模拟计算。模拟结果较好地刻画出了承压水对上覆岩层及断层带的影响;开采活动对底板岩层的影响;断层破碎带受开采影响的大小和范围;承压水影响的时间效应和特定水头作用下承压水沿断层导升的高度。
In order to study the distortion and destruction process of fractured fault zone under the mining influence, we carried out the electron microscopy, the thin section analysis and the creep test on original samples and dupli- cated samples of fault materials. According to test results of the electron microscopy and the thin section analysis of test samples, uniaxial and triaxial creep tests for five group samples, which respectively have three kinds of moisture content, we obtained creep characteristics and the distortion destruction characteristics of fault materials. On the basis of that, the flow-solid coupling numerical simulation was made with the aid of FLAC^3D numerical simulation software. The simulation results illustrate the influence of confined water on overlying strata and fault zone, the influence of mining activity on coal floor, the influencing size and scope of fault crushing zone, time effect of confined water.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2009年第3期33-37,共5页
Coal Geology & Exploration
基金
国家重大基础研究发展计划(973计划)项目(2006CB202205)
国家自然科学基金项目(40572149)
关键词
破碎断层
变形破坏
过程
模拟
fractured fault zone
distortion and destruction
process
simulation
