摘要
针对推进速率对工作面前方支承压力及分布规律的影响,采用黏弹性伯格模型构建本构方程,得到岩体内应力、应变与时间的关系,描述了开采速率对岩体前支承压力分布规律影响。以张集矿为工程背景,通过数值模拟分析,揭示了力学表达式与数值模拟结果的一致性,验证了支承压力力学表达式的可靠性。
Aiming at impact of mining velocity on abutment pressure magnitude and distribution at mining face,the relationship of stress,strain and time of rock was derived by using a viscoelastic Burgers model, describing the impact of exploitation rate on rock abutment presure distribution law.Taking Zhangji mine as the engineering background, through numerical simulation analysis,reveals that theoretical analysis and numerical simulation results are consistent,the result verifies reliability of theoretical analysis expressing.
出处
《煤炭技术》
CAS
北大核心
2016年第6期60-62,共3页
Coal Technology
基金
国家自然科学基金(51174002)
关键词
推进速率
围岩
伯格模型
支承压力
advance rate
wall rock
Burger model
abutment pressure
