【作者】 朱汉华； 董昌周； 杨建辉； 文献民；

【Author】 ZHU Hanhua1, DONG Changzhou2, YANG Jianhui2, WEN Xianmin2 (1. Zhejiang Highway Bureau, Hangzhou 310009, China; 2. Zhejiang university of Science and Technology, Hangzhou 310023, China)

【机构】 浙江省公路管理局； 浙江科技学院；

【摘要】 围岩自承能力来源于强度,围岩强度取决于围岩状态,据此将新奥法"充分发挥围岩自承能力"的观点表述为施工中要"基本维持围岩原始状态",这是一种"显性"表述,提出了隧道施工的技术方向,具有可操作性。提出了围岩预支护原理,即围岩保持稳定平衡要求围岩和支护结构提供的承载力大于导致围岩失稳的各种力,据此对新奥法、浅埋暗挖法等施工工法的统一性进行了分析。提出能量最小原理作为判断合理工法的依据,对围岩扰动最小的工法即为合理工法。最后对若干施工工法问题进行了分析。更多还原

【Abstract】 Personally endure ability of surrounding rock derived from it’s strength, and strength depends on it’s status, on these grounds New Austria Tunneling Method explains that the personally endure ability of surrounding rock should be fully exerted and this viewpoint can be ulterior described that the initial state of surrounding rock should be maintained, which is an explicit expression that puts forward the technical direction of tunnel construction and can be operated easily. The principle of wall rock pre-support was proposed, only the carrying capacity of wall rock and Supporting structure greater than the various loading which induce wall rock Instability, can wall rock maintain stability. And the unity of several construction method, such as NATM, shallow burying & under excavation, was analyzed. The minimum energy principle is the basis that judges the rationality of construction method. The smallest disturbance of the surrounding rock is a reasonable method. Some problems about construction method were analyzed.更多还原