论文部分内容阅读
地下工程围岩与支护的破坏问题,归根到底是一个结构失稳与破坏的力学问题。所以,岩体的不同介质属性及结构特征有不同的失稳破坏规律。因此,原地应力或采场压力作用下围岩与支护的破坏形态,必然与所处力场特征有相应的关系。但目前在采准巷道支护问题究研中,偏重于采动压力作用下的支护研究,对未受采动压力影响时的支护问题没有预以应有的重视,也没有进一步研究两者之间的关系。这对加速采准巷道支护改革及系列化问题的研究是不利的。本文想就后者作一粗浅的探讨。
In the final analysis, the problem of the destruction of surrounding rock and support in underground engineering is a mechanical problem of structural instability and destruction. Therefore, different media properties and structural characteristics of rock mass have different instability failure rules. Therefore, the damage form of surrounding rock and support under the stress of in situ or stope must be related to the characteristics of the force field. However, at present, in researching and approaching roadway support problems, emphasis is placed on the support studies under the influence of mining pressure. There is no pre-emphasis on the support problems that have not been affected by the mining pressure and no further study is needed The relationship between people. This is accelerating the acquisition of roadway support reform and serialization of the study is not good. This article would like to make a superficial discussion of the latter.