Joseite A was taken from the Dadongchang Pb-Zn deposit in Yunuan Province.

In the large chamber bolting and shotcrecting support technology of application;

The causes of abnormal quality of environmental water due to excavation of the underground powerhouse group of a pumped storage power station were analyzed in this study.

Stability analysis on surrounding rock of large cross section chamber supported with bolt/steel mesh/shotcrete combined system;

Taking the underground water pump house supporting in Qincheng Coal Mine as the example, this paper introduces the application of the combined supporting technology of anchor mesh + steel band and anchor-cable in large cross section chamber.