principal vertical

Tidal pumping and vertical shearing are the principal factors leading to distinctions. Here Comes the Spring tide

潮泵作用和垂向切变作用是造成两者差别的主要原因。咸潮来了

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。

The conclusion is that the size of terrestrial stress mainly is vertical principal stress maximum and the fracture of hydraulic fracturing is vertical.

最大水平主应力方向以近东西向为主，水力压裂裂缝的延伸方向也以近东西向为主；

Computation shows that the "tidal pumping" effect has a significant role in the suspended sediment transport within the turbidity maximum of the Changjiang Estuary. Tidal pumping and vertical shearing are the principal factors leading to distinctions.

计算表明，潮泵效应在长江河口最大浑浊带悬沙输移中起着重要的作用。潮泵作用和垂向切变作用是造成两者差别的主要原因。