基于模型试验的减振沟减振效应灰关联度分析  

Grey Correlation Analysis of Vibration Reduction Effect of Damping Ditch Based on Model Experiment

作　　者：段宝福 公伟增[1,2] 张雪伟 沈世占 孙克斌 DUAN Baofu;GONG Weizeng;ZHANG Xuewei;SHEN Shizhan;SUN Kebin(College of Civil Engineering and Architecture,Shandong University of Science and Technology,Qingdao 266590,China;Key Laboratory of Civil Engineering Disaster Prevention and Mitigation,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]山东科技大学土木工程与建筑学院,山东青岛266590 [2]山东科技大学山东省土木工程防灾减灾重点实验室,山东青岛266590

出　　处：《煤矿安全》2020年第1期64-68,74,共6页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51874189)

摘　　要：为了研究爆破地震波传播过程中减振沟的减振规律,以实际工程为背景进行室内减振沟相似模型试验,通过控制减振沟的深度、宽度、长度和相对位置等参数,研究减振沟参数变化时的减振规律。运用灰色绝对关联度法确定减振沟参数对减振效果影响的主次关系,通过分析各变量对测点振速峰值影响的相关程度得出:爆心距和爆源深度为影响爆破振动效应的关键因素,减振沟其他参数一定时,爆心距越小或者爆源越浅,减振沟的减振效应越明显。对确定的爆破施工,减振沟的深度为准优因素,增加减振沟的深度可有效的提高减振效应。To study the vibration reduction law of the damping ditch during the blasting seismic wave propagation, the indoor similar model test of damping ditch is carried out by taking the actual engineering as the background. By controlling the parameters such as the depth, width, length and relative position of the damping ditch, to study the vibration reduction law with the damping ditch parameters change. The grey absolute correlation method is used to determine the primary-secondary relationship of the influence of ditch parameters on the vibration reduction effect. The results showed that the blasting distance and the source depth are the key factors affecting the blasting vibration effect. When other parameters of the damping ditch are fixed,the smaller the blasting distance or the shallower the source is, the vibration reduction effect of the damping ditch is obvious. For the determined blasting construction, the ditch depth is a quasi-optimal factor, and increasing the ditch depth can effectively improve the vibration reduction effect.

关 键 词：爆破振动 减振沟尺寸 减振沟位置 相似模型试验 减振效应 灰关联分析 

分 类 号：TD235[矿业工程—矿井建设]