This paper makes a study on the tectonic stress field by insitu stress measurements using hollow inclusion technique in overcoring in Xishimon iron mine.
In-situ stress measurements were made in a survey tunnel using the hollow inclusion stress gauge in order to gain knowledge of the present stress state of the Pushihe hydropower station.
In this paper, the principle, method and results of the earth stress measurement by hollow inclusion gauge at Renlou Coal Mine are introduced.