The hydrogeologiccondition of Danhou mine is complex, and the sublevel coal is threatened by O. L. water. It is very difficult that thin confining bed coal is mined under pressure.
单侯矿井水文地质条件比较复杂,下部煤层受奥灰水威胁,薄隔水层带压开采问题非常突出。
2
The paper summarizes the engineering geologic and hydrogeologiccondition along the Shanghai Chongming Tunnel and analyses the unfavorable geological condition and its solution in the site.
The analytic results show that the hydrogeologiccondition in Xinying No. l well is particular its erupting stone activity is mainly caused by the effect of regional stress field variation.