【作者】 李仲奎； 刘军； 孙建生；

【Author】 Li Zhongdui;Liu Jun;Sun Jiansheng Hydraulic Engineering Dept.Tsinghua University Beijing 10084 Chian AOKE,Institute, Tsulatba Japan

【机构】 清华大学水利水电工程系； 青木建设研究所；

【摘要】 本文介绍了三维地质力学模型试验中的几项新技术,包括高容重模型材料NIOS的采用、三维复杂地应力场的生成和监控技术、洞室群施工过程模拟中的隐藏开挖技术和内窥监测等等。目前这些新技术已成功用于某超大型水电站地下厂房洞室群的施工仿真三维地质力学模型试验研究,取得满意的成果,并对设计方案起到有力的支持和验证作用。更多还原

【Abstract】 Several newly developed techniques and methods for 3 Dimensional Geo-mechanical Model Test are introduced in this paper. In-clude the following:New model material NIOS with high density and low cost;So-called Discretized Finite Principal Stress Surfaces Loadingand Monitoring System,for the generation of the modeled initial stress field of the test;The special technique and apparatuses for modeling theexcavation of cavems located deep inside the model material; Inner peep technology and so on. By adopting those new techniques and methodsmentioned above,a very large 3D model test with high comparability for a newly designed underground powerhouse has been fulfilled,the exca-vation sequence and the supporting reinforcements were also modeled in the test.The model test was successful and the results were fairly satis-fied.Those techniques and methods can be used for other large geo-mechanical model test, no only underground caverns, but also rock or soilengineering.更多还原