Hydrogeology Investigation On The Xinfangzi To Moziwan Interval In Nanchuan District Chongqing City Xiao Jia Gou Bauxite Mining Area

Nanchuan District Chongqing City Xiao Jia Gou bauxite mining area is located in Nanchuan District,30 kilometers to the East, Nanchuan district jurisdiction under Shui Jiang town. Climatic conditions within the region in favor of karst development and groundwater recharge. According to the meteorological data collected:mine in Nanchuan District Shui Jiang town, mild climate, abundant rainfall, misty, less sunshine, rain Mian long, high humidity, climatic vertical zonation obviously, multi-year average precipitation 1191.8mm. The seasonal distribution of rainfall is very uneven, the dry January, average 19.9mm, the average rainfall of only 1.7% years, the rainy season is 5,6,7,8 and four months, which in June was the most, area averaged 178.4mm.Geological unit mining area as the mountains of low stone mound topography and landform depressions in the surface water in depressions, not development. The surface water of mining area are paddy, reservoir, edge seasonal ditch and the mining area and external Creek and river. In this paper, the mining group hill mine as marginal study area, development zone of tectonic fracture. Complicated hydrogeological conditions, in order to find out the mine hydrogeological characteristics, combined with the impact of the region near the hydrogeological conditions in mining area as the research work in the following two aspects:(1) to study the regional hydrogeological conditions:1, regional geology survey; 2, the regional stratigraphic, tectonic; 3, regional hydrogeological features, the types of groundwater, the aquifer and aquifuge (Group) division and characteristics;(2) of hydrogeological conditions of mining area:1, strata, structure; 2, the mining area terrain landform; 3, mine division of aquifer system and hydrogeological characteristics; 4, the tectonic fracture zone 5, mine hydrogeological characteristics dynamic characteristics of groundwater and recharge, runoff and drainage, conditions; 6, hydrodynamic conditions of groundwater; analysis 7, deposit water filling. Water inflow prediction in 8,9, the chemical characteristics of groundwater.