<正> Through the research on the model of the land reclamation in the refuse dumpof Heidaigou open coal mines,it was concerned that ecology was the theoretical
<正> The main objective of the present study was introduced water mist suppressiontechnology to prevent and control gas burning which occurred during drilling a
<正> In order to understand the mechanism and regularity of the groundwater con- tamination from mine water of abandoned mines,experiments were conducted on an