A collaborative mining method of geothermal energy and coal resources fluidization in deep mines

Abstract

The invention discloses a method for collaborative mining of geothermal energy and coal resources fluidization in deep mines, which includes adopting a deep in-situ unmanned intelligent shield machine for mining operations of coal resources, and the mined coal powder passes through a screw conveyor and a pipeline system Fluid transmission to the surface; partial mining methods such as strip type and room-and-pillar type are adopted, and deep in-situ unmanned intelligent shield machines are used to mine coal seams adjacent to thin coal lines or weaker geothermal energy reservoirs to build geothermal energy storage space After mining, the rock powder of the geothermal energy reservoir is added with cementing materials such as fly ash and cement, and is fluidized and transported to the goaf of the coal seam working face through the pumping pipeline system for filling operation; after the space of the geothermal energy reservoir is constructed, Lay cold water recharge and hot water extraction pipelines, build regional isolation retaining walls, and form a geothermal energy cycle mining system; thus achieving the purpose of fluidized coordinated mining of deep mine geothermal energy and coal resources. The invention can realize the fluidized comprehensive development of deep mine resources, and has wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of comprehensive development of deep mine resources, and in particular relates to a coordinated mining method of deep mine geothermal energy and coal resource fluidization. Background technique [0002] When the deep rock mass is basically in the three-dimensional isobaric state, the deep rock mass enters a full range of plastic rheological state, and it will be difficult to control the movement of rock formations, surrounding rock support, disaster warning and prevention, and the existing methods of mining solid mineral resources. Difficult to apply. In-situ fluidized mining of deep coal is to convert deep coal into gaseous, liquid or gas-solid-liquid mixed substances in situ, and realize unmanned intelligent fluidized mining technology in situ underground. In-situ fluidized mining can change a series of problems in the current mining field, such as low production efficiency, poor safety, serious ecologica...

AI Technical Summary

Problems solved by technology

At present, the shallow hydrothermal aquifer geothermal heating (cooling) technology based on heat pump technology has basically matured, while the existing deep geothermal energy reservoir fracturing and cold water recharge technology is relatively difficult, and the controllability and pumping Mining efficiency is low

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