Design And Safety Evaluation On Goaf Water Storage In A Coal Mine Of Ordos

The contradictory relationship between coal mining and environmental protection makes the advancement of "green mines" imminent.Goaf water storage project can not only improve coal mining efficiency and save groundwater resources,but also bring convenience to the residents of the mine area.Therefore,it is of great research value to design the goaf water storage and conduct safety evaluation.This article takes the rational use of groundwater resources as the starting point,and builds resources,environment,and economic and social coordination and sustainable development as the goal.Using mine hydrogeological report data and actual geophysical prospecting results,the mine boundary and hydraulic properties are determined.The main aquifer in the mine is brand new Quaternary In the system of alluvial-flooding pore aquifer and bedrock pore-fractured aquifer,8 stable aquifers should be distributed.The groundwater recharge and mine water source should be analyzed to determine the water storage conditions in the mined-out area.Design the water storage plan according to the water storage conditions,mining intensity,development degree of the water conduction fracture zone,etc.,establish the water prediction model of the goaf and predict the water volume,design the space model according to the space requirements of the goaf,and then proceed from the project From the perspective of the project,the macro and micro design of the water storage project in the mined-out area was carried out.In order to ensure the rationality of the scheme design,a simulation experiment was conducted on the purification effect and purification mechanism of the rock body water in the mined-out area.The water quality of the reservoir meets the industrial water standard.The safety of undergroundengineering projects is the top priority.In order to further demonstrate the scientific nature of the water storage design scheme,this paper evaluates the safety of the water storage in the goaf from the aspects of dam strength,wall and coal column tightness,etc.In order to ensure the engineering quality of the water storage project of a mine in Erdos,technical measures such as water level control and management measures such as safety system and personnel training have been formed.This paper has a certain guiding significance for the water storage design plan of a coal mine goaf in Inner Mongolia for the realization of "green mine",coal mining and resource protection in the mining area.Development has a certain reference value.