断裂构造对采煤沉陷的影响及其数值模拟研究
Influence of Fault Structure on Coal Mining Subsidence and Its Numerical Simulation Research
朱龙波 1刘慧祥2
作者信息
- 1. 安徽省地球物理地球化学勘查技术院,安徽 合肥 230041
- 2. 安徽大学资源与环境工程学院,安徽 合肥 230093
- 折叠
摘要
数值模拟研究具有直观性,通过建立数值模拟模型,控制变量,可以较为准确地定量研究各因素的影响趋势.对淮南新集二矿收集的资料进行分析,建立倾斜角度分别为15°、30°、45°、60°、75°和断层落差分别为1 m、3 m、5 m、7 m、9 m时的两种模型,计算出模拟结果.模拟结果与材料力学理论分析计算的煤层开采后顶板沉陷值和新集二矿开采后的实际监测数据进行对比,验证数值模拟结果与实际地层变形规律.通过数据分析发现,数值模拟的地层变形规律与力学分析和实际数据基本一致,具有很高的耦合度,可以科学有效地为后期矿区预防和控制采煤沉陷的灾变提供理论依据.
Abstract
Numerical simulation research has intuitiveness.By establishing numerical simulation models and controlling variables,the influence trends of various factors can be quantitatively studied more accurately.The data collected from Huainan Xinji No.2 Mine are analyzed,two models are established for tilt angles of 15 °,30 °,45 °,60 °,and 75 ° and fault drop of 1 m,3 m,5 m,7 m,and 9 m,respectively,and the simulation results are calculated.The simulation results are compared with the roof subsidence values after coal seam mining calculated by material mechanics theory analysis and the actual monitoring data after mining in Xinji No.2 Mine,to verify the numerical simulation results and the actual deformation laws of the strata.Through data analysis,it is found that the deformation law of the strata in numerical simulation is basically consistent with mechanical analysis and actual data,with a high degree of coupling,which can scientifically and effectively provide theoretical basis for preventing and controlling coal mining subsidence disasters in later mine areas.
关键词
FLAC3D/采煤沉陷/数值模拟/断裂构造/控灾Key words
FLAC3D/coal mining subsidence/numerical simulation/fault structure/disaster control引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据