摘要
岩体不同于一般材料，作为一种地质结构体，其具有非均质、非连续、非线性以及复杂的加卸载条件和边界条件，使岩体力学问题通常无法用解析方法简单地求解。相比之下，数值模拟分析具有较广泛的适用性。它不仅能模拟岩体的复杂力学与结构特征，也可以很方便地分析各种边界问题和施工过程，并对工程进行预测和预报。因此，岩体力学数值分析方法是解决岩土工程问题的有效工具之一。
Jingcheng Expressway is the trunk highway linking Beijing and Chengdu,the national tourist city of China. The expressways is listed in the 13 vertical and 15 horizontal highways of 'National Key Highway Construction Planning' issued by the Ministry of Transport and is the important part of the main frame of the Heibei Eleventh-five Year Highway Network Plan and the Highway of A Rong Qi-Shenzhen. Jingcheng Expressway locates in the Yanzhong area of the east bank of Yanshan Mountain with winding and mixed hills,valleys and rivers. There are altogether 8 tunnels with a total mileage of 10000 meters,3 of them being 2000 meters,3 arch tunnels,and 3 mid-and-small tunnels. The tunnel located areas is comprised of glutenite,limestone and impure quartz stones,with fault crush belts and poor integrative stones. The construction of the tunnel is really diffi cult and regarded as the key control project of the Jingcheng Expressway.
出处
《交通世界》
2008年第19期88-91,共4页
Transpoworld
