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本文介绍了几个现场应力量测实例,并将其划分为三种类型:低强度岩体中应力;高强度岩体中应力;高应力地区岩体中应力。被测岩体包括各种各样的沉积岩、火成岩和变质岩,它们的杨氏模量介于1—105 GPa。用于应力解除的最深钻孔为90.7m。根据上述实测结果及简单分析计算,归纳出初始应力在地壳浅部分布的一般规律,论述了初始应力与岩石杨氏模量的关系及其对岩体工程的影响。
This paper presents several in-situ stress measurement examples and classifies them into three types: stress in low-strength rock masses; stress in high-strength rock masses; stress in rock masses in high-stress areas. The measured rock masses include a variety of sedimentary, igneous, and metamorphic rocks with Young’s moduli between 1 and 105 GPa. The deepest hole for stress relief is 90.7m. Based on the above-mentioned measured results and simple analysis and calculation, the general law of initial stress in shallow crust is summarized, and the relationship between initial stress and rock Young’s modulus and its influence on rock mass engineering are discussed.