本文着重于岩体中洞室超挖-不稳定楔形体的预测.This article emphasizes a prediction of overbreak, the unstable wedge , for openings jointed rock mass.分析了超挖回填层和不同回填材料对复合衬砌模型结构承载力的影响.提出的结论可供隧道设计、工参考.Presented conclusion may be used for reference ...
The heron flapped slowly off across the lake.那白鹭振翅向湖对岸慢慢飞去.Heron also translated much of the Greek geometrical algebra into arithmetic and algebraic processes.Heoom又把不少希腊的几何代数法翻译成算术和代数步骤.ELAINE HERON : When I came to Bel...