覆岩破坏特征数值模拟研究现状及进展

煤层开采覆岩破坏特征对于矿井防治水和瓦斯治理具有重要意义.数值模拟试验是非常好的覆岩破坏特征测试方法.详细阐述了煤层开采覆岩破坏和六种煤层开采覆岩破坏特征数值模拟研究方法,分析了煤层开采覆岩破坏特征数值模拟研究方法存在的不足,针对煤层开采覆岩破坏特征数值模拟研究方法存在的问题.提出了未来数值模拟应该结合绿色开采和智能化...

Research Status and Development of Numerical Simulation on Failure Characteristics of Overburden

The characteristics of overburden damage in coal mining are of great significance to the prevention and control of water and gas in coal mines. Numerical simulation test is a very good test method for overburden failure characteristics. In this paper, the numerical simulation research methods of coal mining overburden failure and six kinds of coal mining overburden failure characteristics are described in detail. The shortcomings of numerical simulation research methods of coal mining overburden failure characteristics are analyzed, and the problems of numerical simulation research methods of coal mining overburden failure characteristics are pointed out. It is proposed that the future numerical simulation should combine green mining and intelligent mining technology to develop new simulation modules. It is suitable for the development of coal mine technology; in the future, visual three-dimensional simulation model should be developed to reduce the characteristics of overburden failure in the mining process with high strength, so as to improve the simulation accuracy; in the future, numerical simulation should integrate multiple influencing factors of overburden failure, optimize the reasonable determination method of mechanical parameters of coal and rock mass, introduce new thinking methods and mathematical tools, so as to improve the accuracy of simulation results; in the future, numerical model The creep characteristics of soft rock under high ground stress should be considered, which is very important to ensure the long-term stability of mining engineering.