论文部分内容阅读
本文根据我国的原地应力实测资料讨论了地壳应力随深度的变化. 根据原地应力测量资料,我国在地层500m以上的最大及最小水平主应力随深度(Z)变化的规律为: σ_(Hmax)=(4.5±2.5)+0.049·Z(m) MPa; σ_(Hmin)=(1.5±1.0)+0.030·Z(m) MPa.平均水平主应力随深度的变化关系为: σ_(Hav)=(σ_(Hmax)+σ_(Hmin))/2=0.72+0.041·Z(m) MPa水平主应力与铅直主应力的关系为:最大水平主应力/铅直主应力=σ_(Hmax)/σ_v=(150/Z(m))+1.4;最小水平主应力/铅直主应力=σ_(Hmin)/σ_v=(128/Z(m))+0.5.
This paper discusses the variation of crustal stress with depth based on the in situ stress measurement data in China. According to in-situ stress measurement data, the rule of maximum and minimum horizontal principal stress with depth (Z) above 500 m in the stratum is: σ_(Hmax) )=(4.5±2.5)+0.049·Z(m) MPa; σ_(Hmin)=(1.5±1.0)+0.030·Z(m) MPa. The relationship between average horizontal principal stress and depth is: σ_(Hav) =(σ_(Hmax)+σ_(Hmin))/2=0.72+0.041·Z(m) MPa The relationship between the horizontal principal stress and the vertical principal stress is: the maximum horizontal principal stress/the vertical principal stress=σ_(Hmax) /σ_v=(150/Z(m))+1.4; minimum horizontal principal stress/vertical principal stress=σ_(Hmin)/σ_v=(128/Z(m))+0.5.