Fluidized return mining structure and method suitable for deep coal resources

Abstract

The invention provides a fluidized return mining structure and method suitable for deep coal resources. The fluidized return mining structure comprises a mining area, a fluidized resource undergroundtransfer station located in the mining area, a vertical fluidized resource conveying pipeline which extends to the ground from the fluidized resource underground transfer station, a horizontal main roadway which is located in the mining area and further extends to the border of the mining area, a horizontal fluidized resource conveying pipeline which is located inside the horizontal main roadway and further extends to the fluidized resource underground transfer station, and a return mining path which is located in the mining area. According to the fluidized return mining structure provided inthe invention, only the horizontal main roadway and the fluidized resource underground transfer station need to be arranged during deep coal resource mining, there is no need to build well lanes usedfor coal hoisting and transporting, the number of well lanes used for power supply and equipment supply is decreased, and construction and maintenance cost of the well lanes is reduced; and no residual coal pillar is left in the mining area basically, and the mining rate is high.

Description

technical field [0001] The invention relates to the technical field of mineral mining, in particular to a structure and method for fluidized return mining applicable to deep coal resources. Background technique [0002] In order to overcome the problem of limit depth in traditional coal mining methods and solve the safety and environmental problems in the process of mining deep coal resources, a group of scholars proposed the method of in-situ fluidized mining of deep coal resources. The so-called fluidized mining refers to the in-situ conversion of deep solid mineral resources into gaseous, liquid or gas-solid-liquid mixed state and other fluid resources, and realizes unmanned intelligent mining, selection, charging, thermal power, etc. mining technology underground. system. In order to realize this technical conception, these scholars proposed to use the fluidized mining equipment with shield mining, selection, charging, gas and heat integration for fluidized mining of de...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a fluidized return mining structure and method suitable for deep coal resources in view of the above-mentioned defects of the prior art, aiming to solve the problem of large amount of roadway excavation in traditional coal mining methods. High construction and maintenance costs, many coal pillars left, low recovery rate, unsuitable for fluidized mining of deep coal resources, etc.

Images