摘要
为了研究深部软岩巷道的变形破坏特性,以淮南矿区某煤矿13-1煤回采巷道为例,在现场调查回采巷道工程概况的基础上,开展了室内深部回采巷道围岩变形特性相似模拟试验,并基于块体离散元法,建立了深部回采巷道围岩的数值模型,模拟了开挖过程中围岩的变形特性。相似模拟试验和数值模拟试验结果表明,深部巷道围岩的典型特征为:巷道底臌量>两帮移近量>顶板下沉量,巷道不同围岩受开挖扰动的位移影响范围不同,底板为3.5 m,顶板为2.45 m,两帮为5.5 m。
In order to study the deformation and failure characteristics of deep soft rock roadway,taking the13-1coal mining roadway in some coal mine in Huainan mining area as an example,the similar simulation experiment of the deformation behavior of surrounding rock of deep excavation roadway is carried out.Based on the Block discrete element method,the numerical model of the surrounding rock of the deep mining roadway is established,and the deformation characteristics of the surrounding rock during the excavation are simulated.The results of the similar simulation experiment and numerical simulation show that the typical characteristics of the surrounding rock are as follows:opening floor heave>two sides move quantity>roof convergence.The influence of displacement of the surrounding rock under excavation disturbance is different,and the bottom plate is3.5m,the roof is2.45m,the two are5.5m.The results of deformation control of deep roadway surrounding rock have important reference meaning.
作者
张成辉
石崇
查文华
陈登红
ZHANG Chenghui;SHI Chong;ZHA Wenhua;CHEN Denghong(Research Institute of Geotechnical Engineering,Hohai University,Nanjing 210098,China;OE Key Laboratory of Coal Mine Safety and High Efficiency Mining,Anhui University of Science and Technology,Anhui,Huainan 232001 China)
出处
《河北工程大学学报（自然科学版）》
CAS
2017年第4期27-31,共5页
Journal of Hebei University of Engineering:Natural Science Edition
基金
国家自然科学基金面上项目(51679071)
国家自然科学基金青年基金(51309089)
国家重点基础研究发展计划(973计划)(2015CB057903)
江苏省基础研究计划(自然科学基金)(BK20130846)
关键词
深部巷道
相似模拟试验
块体离散元
数值模拟
变形特性
deep roadway
surrounding rock
similar simulation experiment
block discrete element
numerical simulation
deformation characteristics
