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河谷两岸的地应力场受卸荷、风化、地形(势)的影响。其纵向影响范围是在不断地变化,地应力自地表以下逐渐得到调整。因而提出了将地应力根据不同的影响进行分带的见解;并认为在应力调整带与非调整带之间存在一个隐峰面的界面,工程地质勘探和岩体力学试验研究主要是对隐峰面以上部分的应力调整带进行评价。本文在分析地应力的地质成因的基础上,还提出用岩体地应力的侧压比值K作为评价的准则。
The stress field across the valley is affected by unloading, weathering and topography (potential). Its longitudinal influence range is constantly changing, and the in-situ stress is gradually adjusted from below the surface. Therefore, we put forward the opinion that the earth stress can be zoned according to different influence. And it is considered that there is a hidden surface interface between the stress adjustment zone and the non-adjustment zone. Engineering geological exploration and rock mechanics test research are mainly on the hidden peak The stress adjustment tapes above the surface were evaluated. Based on the analysis of geologic causes of geostress, this paper also proposed to use the lateral pressure ratio K of in-situ stress of rock mass as evaluation criteria.