地质异常体下煤层开采安全的数值模拟分析  

Numeral Simulation Analysis of Coal Seam Mining Safety under Geological Anomaly

作　　者：刘乐意 宣以琼 LIU Leyi;XUAN Yiqiong(College of Civil Engineering,Anhui Jianzhu University,Anhui Hefei 230601)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601

出　　处：《湖北理工学院学报》2021年第3期19-24,共6页Journal of Hubei Polytechnic University

基　　金：国家自然科学基金项目(项目编号:51774007,51274007,51074002)。

摘　　要：为研究地质异常体对煤层开采的影响,以昌恒煤焦9102工作面中段为研究对象,使用FLAC3D对现场T1地质异常体进行数值模拟,对比分析了地质异常体对工作面应力峰值的影响及注浆对异常体处塑性破坏的影响。结果表明,地质异常体对工作面超前应力峰值、底板破坏以及异常体范围内塑性破坏都有明显的影响,而对异常体处采取注浆处理可以改变其岩性力学参数,增加安全开采的条件。In order to study and analyze the influence of geological anomaly on coal seam mining, this paper takes the middle section of Changheng coal coke 9102 working face as the research object. By using FLAC3 D to perform numerical simulation of on-site T1 geological anomaly body, the influence of geological anomaly body on the peak stress of working face and the influence of grouting on the plastic failure of the abnormal body are compared and analyzed. The results show that the abnormal body has significant impacts on the leading stress peak of the working face, the failure of the floor and the plastic failure in the range of the abnormal body, and the rock mechanics parameters of the abnormal body can be altered after the grouting treatment, and the conditions of safe mining can be increased.

关 键 词：地质异常体 应力 塑性变形 FLAC3D数值模拟 

分 类 号：TU433[建筑科学—岩土工程]