- It takes some time to form the phenomenon of zonal disintegration of surrounding rocks with high in situ stress,but the time needed is not too long.
- The principle and characteristics of stress measurement with the CSIRO method and the main procedures of in situ stress measurement carried in 4 coal mines of Xingtai mining area are introduced.
- During course of in situ stress measurement, some problems such as core discing, minification and caving of borehole due to horizontal stress are appeared, and their mechanism is studied.
- determination for 3D in situ stress tensor
- hydrofraeturing in situ stress measuring
- Key around Mobile, the next key stop in situ fixed.