基于PHASE数值模拟矿山开采过程的地压监测系统构建及应用研究

毛坪矿在向深部延伸开采过程中，深部高应力、岩爆等地压问题日益突出。通过PHASE软件对矿山典型地质剖面进行数值模拟与分析，得到了不同矿体之间的天然隔离矿柱是应力集中最为明显的区域，且岩层移动以上盘上向45°方向的移动变形最大等地压活动规律，为矿山地压监测系统建设提供了参考。基于PHASE模拟分析结果及矿山开采技术条件，开展了地压监测方案设计并建立了地压监测系统，通过地压监测与分析，得到了矿山动态开采过程中围岩的微震时空演化规律及变形破坏特征，为后续的地压灾害防控提供了技术依据。

Research on establishment and application of ground pressure monitoring system based on PHASE numerical simulation for mining process

In the process of deep mining extension of Maoping mine, the ground pressure problems such as deep high-stress and rock burst are increasingly prominent. In this work, the numerical simulation and analysis on the typical geological profile of the mine were conducted by PHASE software. It is found that the natural isolated pillar between different ore bodies is the most obvious area of stress concentration, and the rock strata movement upward to 45° direction of the upper plate is the maximum displacement deformation. The ground pressure movement law can provide a reference for the construction of the ground pressure monitoring system. Based on the PHASE simulation analysis results and the mining technical conditions, the ground pressure monitoring scheme design and the monitoring system were carried out. The microseismic time and space evolution rule and deformation failure characteristics of surrounding rock in the process of dynamic mining are got through the ground pressure monitoring and analysis, which can provide technical basis for the follow-up ground pressure disaster prevention and control.