initial in situ stress field

For high in situ stress occurred in Ertan dam area, combined action of initial in situ stress field, time and space effect during excavation and external loads arch thrust etc.

笔者针对二滩电站坝区存在的高地应力现象，从初始地应力场的建立、施工开挖的时空效应，直到与拱推力等外荷载共同作用下对坝基岩体稳定的影响全过程进行了分析和计算。

Initial in-situ stress field is analyzed with multiple variables and equations regression.

在初始地应力场分析问题中，采用了多方程回归方法。

The results in change of in-situ temperature field and the influences of induced stress due to thermal stress field on the initial fracture condition are analyzed.

据此，分析了这些变化导致的热应力引起的附近应力对注水井井壁开裂条件的影响，并建立了常注水量条件下注水井的井壁开裂准则。