摘要
依托色连二矿工程地质背景,运用FLAC3D数值模拟软件,针对区内巷道遇水软化条件下软岩巷道围岩稳定性问题进行深入分析。模拟在充分考虑现场地质条件的基础上,分别采用了巷道围岩遇水软化前、遇水软化后两种方案,并对其开挖工程中塑性区分布、最大主应力值,围岩位移随时步变化特征进行对比分析。结果表明,围岩遇水软化后对围岩的塑性破坏显著增强,说明软岩巷道围岩随着岩石力学参数的降低而显著破坏,模拟结果为后期围岩支护优化设计提供了一定的科学依据。
Based on the Selian 2nd coal mine engineering geological background, using FLAC3 D numerical simulation software, in-depth analysis to solve the problem of soft rock roadway surrounding rock stability in roadway water softening conditions. The simulation on the basis of fully considering the site geological conditions, the surrounding rock of roadway were used respectively to meet before the water softening, water softening after two kinds of schemes, and the plastic zone distribution in excavation engineering, the maximum principal stress, displacement of surrounding rock at any step change characteristics were analyzed. The results show that, surrounding rock with water softening of rock plastic damage increased significantly, indicating that soft rock roadway surrounding rock with the rock mechanics parameters decreased damage and the simulation results for surrounding rock of late support optimization design provides certain scientific basis.
出处
《煤炭与化工》
CAS
2016年第2期55-58,共4页
Coal and Chemical Industry
关键词
软岩巷道
围岩稳定性
数值模拟
soft rock roadway
stability of surrounding rock
numerical simulation
