刚-柔-刚支护防治冲击地压理论解析及实验研究
吕祥锋; 潘一山
刊名岩石力学与工程学报
2012-01-15
通讯作者邮箱lvxiangfeng2006@126.com
卷号31期号:1页码:52-59
关键词采矿工程 刚-柔-刚支护结构 应力波传播 实验研究
ISSN号1000-6915
其他题名THEORETICAL ANALYSIS AND EXPERIMENTAL RESEARCH ON ROCKBURST PREVENTION MECHANISM OF RIGID-FLEXIBLE-RIGID SUPPORTING STRUCTURE
通讯作者吕祥锋
产权排序中国科学院力学研究所;辽宁工程技术大学力学与工程学院
合作状况国内
中文摘要冲击波在巷道围岩-多孔金属材料-钢支护构成的刚-柔-刚(R-F-R)支护结构的传递过程可简化为一维应力波在结构中传播问题,通过对R-F-R支护结构防治冲击地压理论分析,得到岩块冲击多孔金属材料-钢支护结构时多孔金属材料对冲击波压力的衰减情况以及多孔金属材料厚度、密度对冲击波压力衰减的影响。采用落锤冲击实验方法,对3种类型支护结构进行冲击实验研究,分析冲击波在R-F-R支护结构中的传播和衰减规律,实验结果表明,R-F-R支护结构具有良好的缓冲和吸能作用。理论计算与冲击实验结果对比可知,计算结果表明钢板冲击R-F-R支护结构时作用在钢支架表面的冲击波压力为钢板直接冲击钢支架时的30.7%,钢板冲击R-F-R支护结构时可吸收能量值约为总能量的94.8%;冲击实验结果表明,作用在R-F-R结构钢支架表面的冲击波压力为钢板直接冲击钢支架时的50%左右,钢板冲击R-F-R支护结构时吸收能量值约为总能量的70%以上。
英文摘要The transfer process of shock waves in supporting structure of rigid-flexible-rigid(R-F-R) can be simplified as one-dimensional stress wave propagation in the structure. The law of shock wave pressure attenuation affected by porous metal materials and the shock wave pressure decay influenced by thickness and density of porous metal materials were obtained by the impact theory analysis of prevent blunt mechanism of R-F-R supporting structure. The impact energy-absorption ability of three types of supporting structures was studied by drop hammer impact test. At the same time, the spread and attenuation process of impact wave in R-F-R supporting structure was analyzed. The calculation results show that the shock wave pressure applied to the surface of R-F-R supporting structure is 30.7% of the shock wave pressure applied to the surface of steel bracket, and the R-F-R supporting structure absorbs energy about 94.8% of the total energy. The experimental results also show that the shock wave pressure applied to the surface of R-F-R supporting structure is 50% of the shock wave pressure direct applied to steel bracket, the R-F-R supporting structure can absorb more than 70% of the total energy.
学科主题岩体力学和土力学
收录类别CSCD ; EI
资助信息国家重点基础研究发展计划(973)项目(2010CB226803)
原文出处http://epub.cnki.net/kns/detail/detail.aspx?FileName=YSLX201201009&DbName=CJFQ2012
语种中文
CSCD记录号CSCD:4420957
公开日期2013-01-16
内容类型期刊论文
源URL[http://dspace.imech.ac.cn/handle/311007/46445]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
推荐引用方式
GB/T 7714
吕祥锋,潘一山. 刚-柔-刚支护防治冲击地压理论解析及实验研究[J]. 岩石力学与工程学报,2012,31(1):52-59.
APA 吕祥锋,&潘一山.(2012).刚-柔-刚支护防治冲击地压理论解析及实验研究.岩石力学与工程学报,31(1),52-59.
MLA 吕祥锋,et al."刚-柔-刚支护防治冲击地压理论解析及实验研究".岩石力学与工程学报 31.1(2012):52-59.
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