动压巷道围岩渗流场的空间分布特征  

Seepage space features of roadway surrounding rock affected by dynamical pressure

作　　者：许兴亮[1,2] 张农[1,2] 曹胜根[1,2] 

机构地区：[1]中国矿业大学矿业工程学院,江苏徐州221008 [2]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221008

出　　处：《煤炭学报》2009年第2期163-168,共6页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50674085);国家重点基础研究发展计划(973)资助项目(2007CB209408);2006年教育部新世纪优秀人才支持计划(NCET-06-0478);中国矿业大学青年科研基金资助项目(2007A006);中国矿业大学煤炭资源与安全开采国家重点实验室开放研究基金资助项目(07KF04)

摘　　要：采用原位窥视仪观测实验与理论分析,根据围岩不同的渗流特性,沿巷道径向将巷道围岩空间划分成完全渗流区、定向渗流区、渗流屏蔽区、原岩渗流区;沿巷道轴向岩体渗透性呈现负指数规律逐渐增加达到极值,随后趋向减少;沿巷道环向渗透性能受层状沉积的缘故,不同部位渗透性差异很大,层内的渗流,往往在层理面发生隔断.Seepage space features of surrounding rock were brought forth by the way of theory analysis and detecting instrument of borehole experiment on site. Based on penetrability of rockmass, the space of surrounding rock along radial direction were divided into complete seepage section, directional seepage section, shielding seepage section and untouched seepage section. Along axial direction penetrability of rockmass increased by negative exponent law and reach peak value gradually, then decreased subsequently. Along circle direction penetrability of rockmass was remarkably different, seepage flow was blocked on stratification bedding.

关 键 词：动压 巷道围岩 渗流场 空间分布 裂隙 

分 类 号：TD311[矿业工程—矿井建设]