Study on Higher Mining Desigh in Consideration of Complex Grometry Effect

开发了用位移不连续法进行准三维和全三维弹性分析的系统，并应用于柳原矿、丰叶矿、木和田矿和小仓矿的高采设计。开发了二维离散单元法预测不连续岩体动态的系统，并将其应用于地震作用下的采石场稳定性分析，在岩原矿和小仓矿进行了开采引起的岩体变形和应力的现场测量。将柳原矿顶板下沉量实测值与数值模拟预测值进行了比较。通过对两个矿山实测应力变化的比较，得出了巷道围岩对开采过程的一般响应。

The systems for quasi-three dimensional and complete three dimensional elastic analyses by Displacement Discontinuity Method were developed and those were applied to higher mining design in Yanahara Mine, Toyoha Mine, Kiwada Mine and Kokura Mine. The system to predict behavior of discontinuous rocks by Distinct Element Method, which is two dimensional but can be applied to any geometrical modelling was developed and, it was applied to analyses of quarry stability when earthquake happens.In situ measurements of rock deformations and stresses induced by mining progress were carried out in Yanahara Mine and Kokura Mine. The roof sinkages measured in Yanahara Mine are compared with those predicted by numerical modelling. Stress changes measured in both the mines were compared each other and general responses of rock around the openings to mining progress are obtained.