Fluidized cooperative mining method for deep mine geothermal energy and coal resources

Abstract

The invention discloses a fluidized cooperative mining method for deep mine geothermal energy and coal resources. The fluidized cooperative mining method comprises the following steps of adopting a deep in-situ unmanned intelligent shield tunneling machine to perform coal resource excavating operation, and transmitting excavated pulverized coal to the ground through a spiral conveyor and a pipeline system in a fluidized mode; adopting partial extraction methods such as a strip belt type extraction method and a room column type extraction method, utilizing the deep in-situ unmanned intelligentshield tunneling machine to mine a thin coal line adjacent to a coal bed or a relatively weak geothermal energy reservoir, and constructing a geothermal energy storage space; adding cementing materials such as coal ash and cement into rock powder of the mined geothermal energy reservoir to obtain a mixture, transmitting the mixture to a worked-out section of a coal bed working face to perform filling operation through a pumping pipeline in the fluidized mode; after the geothermal energy storage space is constructed, paving a cold water re-filling and hot water extracting pipeline, and constructing an area isolating partition wall, thereby forming a geothermal energy circulatory mining system and achieving the fluidized cooperative mining purpose of deep mine geothermal energy and coal resources. The fluidized cooperative mining method can realize fluidized comprehensive development of deep mine resources, and has a wide application prospect.

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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