中国矿山工程

The mineralization geological setting of the Kunyang Phosphate’s No.2 deposit is complex, and the marine geological environment from the late Sinian to the Cambrian has created favorable conditions for the enrichment and deposition of phosphorus in the region; However, at the same time, the large-scale dolomite with multiple cycles became the direct surrounding rock or indirect aquifer of the upper and lower walls along with mineralization, and then with the compression and deformation from the crustal movement, the Xiangtiaochong anticline structure and other geological traces in the southwest part of the Kunming Front Sag, and the strata and industrial orebodies in the mine area are basically SE-dipping monoclinic structures. Analysis and practice shows that the water should be preferably drained instead of blocked when it comes to water control during the construction of inclined shafts and the use of ground penetrating radar for water detection (karst cave) along with geological drilling verification, as well as the use of geological drilling methods for water detection, water draining for pressure relief have helped ensure the safe construction of the project.