摘要
F10断层是影响某煤矿1煤采区安全生产的主要断层之一。根据物探结果显示,该断层具有一定的含导水性,为保障工作安全,对该断层进行了帷幕注浆改造,注浆后岩土体力学参数和物理参数均有不同程度的提高,利用FLAC^(3D) 软件模拟注浆前后围岩未开采和开采时的顶底板的位移量和塑性破坏情况,从而分析断层注浆加固效果。研究结果表明:注浆能够提高破碎岩体的强度和完整性,为煤层的安全开采提供保障。
The F10 fault is one of the main faults that affect safety production, which is located m the 1coal mining areas of a coal mine. According to the results of geophysical observation, the fault has acertain water conductivity. In order to ensure the safety of the work, the fault is reconstructed bycurtain grouting to improve the mechanical parameters and physical parameters of the rock and soil.The FLAC3D software is used to simulate the displacement and plastic collapse of the coal seam andfloor when the surrounding rock is not mined and mined after grouting, and compared with that of non-grouting, so as to analyze the effect of fault grouting reinforcement. According to the results, groutingcan improve the strength and integrity of fractured rock mass, and provide a guarantee for the safemining of coal seam.
出处
《煤炭技术》
CAS
2018年第2期156-158,共3页
Coal Technology
基金
国家自然科学基金项目(41472235)
深部岩土力学与地下工程国家重点实验室开放基金(SKLGDUEK1313)
安徽省高等学校省级自然科学研究重大项目(KJ2014ZD11)
关键词
导水断层
注浆改造
注浆数值模拟
water conducting fault
grouting reconstruction
grouting numerical simulation
