Study On Hydrogeological Characteristics Of Gugui Mining Area In Huainan

China is a country with large coal resources.The coal accounts for more than half of the country's energy consumption structure.Safe and efficient mining of coal provides a solid foundation for the normal supply of national energy.Mine water damage is one of the most serious disasters caused by many disasters in coal production.Therefore,it is of great practical significance to study the hydrogeological conditions in the mining area and clarify the characteristics of hydrogeology.This paper takes Gugui Mining Area in Huainan Coalfield as an example,Through the collection,collation and analysis of basic data such as geology and hydrogeology of the mining area,the hydrogeological conditions of the study area,the control of the geological tectonic belt on the water filling of the mine,the mine water inflow,and the classification of the hydrogeological type of the mine area were studied.Get the following main conclusions:(1)The main aquifers contained in the mining area are:Cenozoic loose aquifer?Permian sandstone fracture aquifer?Limestone karst fissure aquifer?Among them,the Cenozoic loose aquifer contains upper,middle,and lower sections,which is weakly rich in water;the Permian sandstone fractured aquifer is weakly rich in water;the limestone karst fissured aquifer has uneven water content,which is weak,medium,and strong.Waterborne points.(2)The water chemistry type in the lower part of the Cenozoic upper reaches is HCO3-Cl-Na+K type,the upper part in the middle,the lower part in the middle and lower part,and the water chemistry type in the lower aquifer is Cl-Na type;the water chemistry type of the C3I group is mainly:Cl-Na,Cl·SO4-Na and Cl-Na·Ca types;C3 ?limestone water and C3 III limestone water are Cl-Na type.(3)Based on the pumping test,combined with mine comparison method,the unit water volume method,area analog method calculation,It is predicted that the normal inflow of water in the mine is Q=317.93m3/h,and the maximum water inflow is Q=517.93m3/h.(4)The structural belt of the Gugui mining area extends from the northwest corner of the south mining area of Gubei mine to the southeast corner of the south-south mining area of Guqiao Mine,the total length of 7858 m,The main water-filled aquifer in the concealed structural belt is loose sandstone aquifer of the Cenozoic,coal-bearing sandstone aquifer,tectonic fissure water and floor limestone karst fissure water.The rock stratum between the structural belt and the fault is affected by the fault movement of the fault,the fracture develops,and the bottom plate is destroyed,which is prone to water hazards.