基于FLAC^(3D)煤层底板扰动规律的数值模拟研究

Numerical simulation study on disturbance regularity of coal seam floor by FLAC^(3D)

以河南贺驼煤矿1112工作面为工程背景,基于FLAC^(3D)软件,通过建立相关数值模型,对工作面开采过程中煤层底板扰动规律特征进行了模拟研究,分析了煤层底板推进过程中在走向和倾向上的破坏深度和应力变化规律。结果表明:随着工作面的推进,底板破坏程度逐渐增大,当推进到一定距离时,底板采动破坏深度达到峰值,之后趋于稳定,而破坏范围一直在增大。本次研究结果为矿井底板突水的防治提供了理论依据和科学参考。

In the engineering background of 1112 work face in Hetuo coal mine,Henan,based on FLAC^(3D),through the establishment of related numerical model,the numerical simulation of the characteristics of the coal floor in the process of mining disturbance regularity has been carried out.The advance process of coal floor damage depth in the striking and dipping directions and stress variation regularity is analyzed.The result shows that with the advance process of work face,the damage degree of floor increases gradually.When the work face advances to a certain distance,the damage depth of mining floor reaches the peak,and then tends to be stable,while the damage range keeps increasing.The research result provides the theoretical basis and scientific reference for the prevention and treatment of water inrush from the mine floor.