基于能量要素的冲击地压致灾机理分析

本文基于能量要素,从冲击地压的形成机理和条件出发,分析冲击地压的致灾特点与组合煤岩系统能量演化之间的联系,以此探究冲击地压的发生本质。结果表明:冲击地压的形成过程伴随着能量的演化,断层、褶曲等地质因素造成煤岩组合区域的应力异常集中,开采活动会造成煤岩组合系统应力重新分布而造成能量积聚;煤岩组合体在进行能量演化过程中涉及能量输入、能量积累、能量耗散和能量释放几个过程;厚而坚硬的顶、底板阻碍煤层的卸压变形,组合煤岩系统的压实对煤层产生了闭锁作用,为煤岩系统的能量的积聚及演化提供天然环境,造成冲击地压。

Mechanism Analysis of Rockburst Disaster Based on Energy Elements

Based on the energy elements,starting from the formation mechanism and conditions of rockburst,this paper analyzes the relationship between the disaster causing characteristics of rockburst and the energy evolution of combined coal rock system,so as to explore the essence of rockburst.The results show that the formation process of rockburst is accompanied by the evolution of energy.Geological factors such as faults and folds cause the abnormal concentration of stress in the coal rock combination area,and mining activities will cause the redistribution of stress in the coal rock combination system and the accumulation of energy;The energy evolution of coal rock assemblage involves several processes:energy input,energy accumulation,energy dissipation and energy release;The thick and hard roof and floor hinder the pressure relief deformation of the coal seam.The compaction of the combined coal rock system has a locking effect on the coal seam,provides a natural environment for the energy accumulation and evolution of the coal rock system,and causes rockburst.