Mine Water Control Measures based on Injection Method:Taking Laoyingyan Well in Sichuan Province as an Example
Mine water treatment and discharge have become important factors restricting the comprehensive benefits of coal enterprises and local economic development.Deep well injection presents a potential solution for treating mine water inrush under specific conditions.This study examines the geological conditions,technical feasibility,and pressure injection test of water stor-age space for deep well injection,taking the mine water treatment in Laoyingyan Mine in Sichuan as an example.Results show that deep carbonate rock formation with dissolution space or clastic rock formation with good porosity and permeability can serve as target layer for water storage.Based on the actual situations of coal mine areas(wells)in southwestern China,mechanical core drill can be employed to implement well construction;and the hydraulic fracturing method using ultrasmall borehole can create artificial storage space.
deep well injectionmine waterwater storage target layerultrasmall boreholehydraulic fracturing technology
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