顶板断裂型回采巷道冲击地压弹性波传播模型研究
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摘要
对回采工作面顶板断裂引起的回采巷道冲击地压机制进行探讨时,以弹性波为动态冲击能量载体,结合冲击启动理论等相关理论,分别对弹性波激发阶段、中间路程传播阶段及巷道壁附近叠加作用阶段进行分析,构建矩形、梯形回采巷道冲击地压弹性波传播模型,可为相应顶板型回采巷道冲击地压防治工作提供一定的借鉴。
In analyzing the rock burst caused by the roof fracture in roadway leading segment, with the elastic wave as dynamic impact energy carrier, combined with the impact of start theory, analyze the elastic wave excitation stage, intermediate stage and superimposition stage near the tunnel wall respectively, establish a elastic wave propagation model during rock burst in rectangular and trapezoidal recovery roadway. It can provide reference for relevant control work in rock burst caused by roof fracture.
In analyzing the rock burst caused by the roof fracture in roadway leading segment, with the elastic wave as dynamic impact energy carrier, combined with the impact of start theory, analyze the elastic wave excitation stage, intermediate stage and superimposition stage near the tunnel wall respectively, establish a elastic wave propagation model during rock burst in rectangular and trapezoidal recovery roadway. It can provide reference for relevant control work in rock burst caused by roof fracture.
引文
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[2]姜耀东.煤岩冲击失稳的机理和实验研究[M].北京:科学出版社,2009.
[3]邹德蕴,姜福兴.煤岩体中储存能量与冲击地压孕育机理及预测方法的研究[J].煤炭学报,2004,29(2):159-163.
[4]冯小军,沈荣喜,曹新奇,等.坚硬顶板断裂及能量转化分析[J].煤矿安全,2012,43(4):150-153.
[5]钟伟芳,聂国华.弹性波的散射理论[M].武汉:华中理工大学出版社,1997.
[6]高明仕,窦林名,卢全体,等.冲击矿压巷道围岩控制的强弱强结构力学模型及其应用分析[J].煤矿支护,2013(1):1-6.