摘要
为了有效控制冲击地压灾害,以高强度释能吸能支护系统为研究方向,选取彬长矿区高家堡煤矿深井冲击倾向性煤层的采掘活动为试验对象,分析了围岩应力-应变关系,研究了围岩支护特性曲线,结合冲击地压能量传播特性,提出了冲击地压条件下的支护系统"工况点漂移假说"和"漂移功"的概念。提出了基于安装载荷、支护强度、锚杆长度、围岩表面位移和冲击功的支护系统五维工况设计,开发了释能吸能抗冲支护五维工况点图解法,确定了合理的支护工况参数。高家堡煤矿203回风巷进行工业性试验,工作面采掘期间未发生强动力现象,矿压参数观测结果与设计一致,验证了释能吸能支护系统设计对冲击地压控制的可行性。
In order to effective control rock burst disasters,this paper takes the high strength energy-releasing and energy-absorbing support system as the research direction,selects the excavation activity of the coal mine in the deep well of the high fort in Binchang Mining Area as the test object.This paper analyzes the relationship between stress and strain of surrounding rock,studies the supporting characteristic curve of surrounding rock,and combined with the characteristics of energy propagation of rockburst,puts forward the concept of＂working point drift hypothesis＂and＂drift work＂under the condition of impact ground pressure.The five-D working condition design of support system based on installation load,support strength,bolt length,surrounding rock surface displacement and impact work is defined,and the five-D working condition point diagram method of energy-absorbing and punching support is developed,and the reasonable support and nurse condition parameters are determined.The industrial test of the No.203 roadway in Gaojiapu Coal Mine,the strong dynamic phenomenon did not occur during the mining,and the observation results of the mine pressure parameters are consistent with the design,which verifies the feasibility of the design of the energy-absorbing support system for the impact ground pressure control.
作者
孙希奎
吕卫东
赵庆民
孙越
SUN Xikui;LYU Weidong;ZHAO Qingmin;SUN Yue(Shandong Energy Zibo Mining Group Co.,Ltd.,Zibo 255120,China;Shandong Provincial Research Center of Backfill Mining Engineering and Technology,Zibo 255000,China)
出处
《煤炭科学技术》
CAS
北大核心
2018年第8期51-56,共6页
Coal Science and Technology
关键词
冲击地压
释能吸能支护系统
漂移功
五维工况点
矿压观测
rock burst
energy releasing and energy- absorbing support system
drift work
five- D working condition point
mine pressure observation
