principal horizontal stress

The results show that vertical stress is equal to overburden stress at shallow level. Maximum principal stress is sub horizontal stress in the NE direction.

结果表明：显德汪煤矿垂直应力近似等于上覆岩层的自重应力，最大主应力为北东方向，且为近水平压应力。

Horizontal principal stress in the upper crust of China is due to the weight of the overburden rock beds themselves, the crustal temperature field as well as the compression of the plates.

地壳上部的水平主应力是上覆岩层自重、地壳温度场和板块挤压三种作用的结果。

The maximum horizontal direction NE60~ 65 ° of principal compressive stress on Jianghan basin was given by using analytic method of measured stratigraphic dip angle in addition to borehole log data

利用钻孔测井资料并运用地层倾角测量信息分析法，给出了江汉盆地地应力最大水平主压应力方向为NE60～65°