Abstract
Xincheng gold deposit is located in Xincheng Village of Jiaodong, Laizhou Jincheng, near Bohai Bay, and is one of the largest mines in China. The orebodies of Xincheng gold deposit located in Jiaojia fault zone are mainly located in the pyrite sericite-quartzized cataclasite belt and the pyrite-sericite-quartzized granodioritic cataclasite belt under the main fault plane (Fault Gouge). Based on the exploration data and test data, the occurrence characteristics of I and V major orebodies in the deposit are analyzed, and the mining evaluation is made on the basis of the hydrologic and environmental characteristics of the deposit. The results show that the rock of the Orebody, roof and floor is mainly massive igneous rock and Metamorphic Rock, which has high mechanical strength and is hard and semi-hard rock with simple engineering geological conditions The Ore and waste rock are not easy to decompose harmful substances, have no heat harm, the possibility of local surface deformation caused by mining is not big, the circulation of groundwater is bad, the evaporation is big, the water quality is bad, the mined-out area formed by mining has little influence on the stability of rock mass in the mining area. The main ore body in the study area is of good geological environment.
Highlights
Jiaodong Xincheng gold deposit is located in Xincheng village, Jincheng, on the Bank of Bohai Bay
The Xincheng Mining area is located in the Xincheng segment of Jiaojia fault zone, where the quaternary loose sediments are widely distributed, characterized by the development of fault structures and magmatic rocks, on the east side are the fine medium weak GNEISSIC biotite monzogranite in the Jiuqu unit of Linglong ultraunit and the porphyritic biotite granodiorite in the Shangzhuang Unit of Guojialing ultraunit, on the west side is the coarse-grained biotite Monzonite in the Cui Zhao unit of Linglong super-unit [12]
Wall Rock Alteration is developed in the mining area, and its scale and strength depend on the scale and nature of the fault structure and the degree of rock fragmentation
Summary
Jiaodong Xincheng gold deposit is located in Xincheng village, Jincheng, on the Bank of Bohai Bay. After several decades of mining, the reserve of recoverable resources in the deposit is in crisis. The research of I and V ore bodies has been very active, and the genesis, occurrence, ore-controlling structure, reserves and so on have been studied from different angles [1,2,3,4,5,6,7,8,9,10,11]. On the basis of the research results and combining with the field exploration data and test data, the occurrence characteristics of I and V ore bodies are analyzed more deeply and concretely, combined with the water pattern and environmental characteristics of the mining area, the mining evaluation of the deposit is carried out
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