大降坪硫铁矿是国家重点工程之一。自八十年代始,矿山进行了剥离工程,目前露天采矿场初具规模,部分矿体已出露或被采掘中。设计部门根据地质队详细勘探报告(以下简称“报告”),提出必须查明第5含水带——F_4断层在214米标高的展布及其围岩稳定性,为疏干排水巷道施工设计提供依据。 Dayaiping pyrite is one of the key national projects. Since the 1980s, the mine has been stripped. At present, open-air mining mines have begun to take shape and some ore bodies have been exposed or are being excavated. According to the Geological Team Detailed Exploration Report (hereinafter referred to as the “Report”), the design department proposed that it is necessary to identify the distribution of the 5th water zone-F_4 fault at a height of 214 meters and its surrounding rock stability, and provide the design for the drainage and drainage tunnel construction in accordance with.