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大量实践和理论分析表明,地下洞室的应力分布、变形特征和稳定性受许多因素的影响,这些因素如岩体初始应力状态、岩体结构特征、洞室断面的形状和大小、施工技术和方法等。其中,岩体的初始应力状态和岩体结构特征起着重要作用。国内外许多地下工程实践还表明,岩体中初始应力场问题是一个相当复杂的问题,测得的洞室围岩中初始应力状态是各式各样的。水平方向的压应力有的
A great deal of practical and theoretical analysis shows that the stress distribution, deformation characteristics and stability of underground caverns are affected by many factors such as the initial stress state of the rock body, the structural characteristics of the rock mass, the shape and size of the cavern cross section, and the construction technology. Method etc. Among them, the initial stress state of the rock body and the structural characteristics of the rock body play an important role. Many underground engineering practices at home and abroad also show that the initial stress field in rock mass is a rather complex problem. The measured initial stress state in the surrounding rock of the cavern is various. Some horizontal compressive stress