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

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.