一、引言首先要提出讨论的问题是光测弹性力学在地压问题研究的应用究竟有多大价值。按照地质学家的观点。一般言之,岩石可以看作是各向同性体的,李四光在他的著作中曾经提到“各种岩石,大都由各种矿物结晶或各种矿物质结合而成。每一粒晶体,各有其机械的特性。同一晶体,除属于正方系者外,常因方位不同,其机械的特性少有差异。造成各种岩石之矿物晶体,其排列之方式,除某种构造岩外,大都乱杂无章,且为数至巨,故以 First, the introduction The first question to be discussed is the value of elasto-elastography in studying the problem of ground pressure. Follow the geologist’s point of view. In general, rocks can be regarded as isotropic, Li Siguang once mentioned in his writings "A variety of rocks, mostly made of various mineral crystals or a combination of minerals. Each crystal, each Have the mechanical characteristics of the same crystal, except those belonging to the square system, often due to different orientation, the mechanical characteristics of the less difference caused by a variety of rock mineral crystals, the arrangement of way, with the exception of some tectonic rocks, most Scattered, and the number of giant, so to