有限差分法在软岩巷道变形监测中的研究

Research of Finite-difference Method in Deformation Observation of Soft Rock Tunnel

采用多断面、多点监测的方法对鸡西市荣华煤矿主运输巷道进行巷道变形监测,通过计算机程序绘制变形曲线,同时利用有限差分法对巷道变形进行三维数值模拟。现场变形监测数据可对模型进行修正,并通过岩石物化实验获得模拟参数,模拟结果分析表明与实际变形监测结果一致,相似度符合现场要求。可对巷道变形进行预测及示警,并指导现场支护,帮助取得最优支护方案。

Multi-sectional, multi-point deformation monitoring in main transport tunnel of Jixi Ronghua mine, deformation curves were drawn by a computer program, while taking advantage of finite difference method for 3D numerical simulation of tunnel deformation. Deformation monitoring data can be amended on the model, and the parameters can be obtained from ＂physical and chemical experiments, simulation results show that simulation is consistent with the deformation monitoring, similarity meet the actual requirements. Simulation results can forecast the tunnel deformation, and guide the tunnel supporting, help them to achieve an optimal design plan.