Geothermal exploitation system and construction method thereof

Abstract

The invention discloses a geothermal exploitation system and a construction method thereof. The geothermal exploitation system comprises a mineshaft, an injecting pipeline and a collecting pipeline, wherein the injecting pipeline and the collecting pipeline are arranged along the inner wall of the mineshaft. The injecting pipeline communicates with the collecting pipeline through drilling holes in hot dry rock. The injecting pipeline communicates with an opening of one end of one of the drilling holes through an injecting roadway, and the collecting pipeline communicates with an opening of the other end of one of the drilling holes through a collecting roadway. The injecting pipeline and the collecting pipeline both are connected with a power generating working platform arranged on the ground, and accordingly, a closed cycle is formed. By means of the construction method of the geothermal exploitation system, geothermal energy can be exploited largely; numerous defects in an existing exploitation method are avoided; meanwhile, an existing mine is utilized or combined with deep mining to conduct geothermal exploitation so that the engineering cost can be reduced, unnecessary repeated building can be reduced, and an ore deposit without economic exploitation value due to the burial depth can be exploited. The method can be carried out in various old mines lacking of resources, so that the old mines are subjected to secondary production to break away from the dilemma that the resources are scarce.

Description

technical field [0001] The invention belongs to the technical field of geothermal development, and in particular relates to a geothermal development system and a construction method thereof. Background technique [0002] As the world's energy supply and demand are becoming increasingly tense, and traditional energy is facing shortages and high carbon emissions, the development and utilization of new energy has become a research and development hotspot, among which the research and development of 3000-10000 meters deep geothermal energy resources is getting more and more people's attention However, due to the limitations of drilling technology, the utilization rate of geothermal resources is not high. Geothermal heat mainly comes from radioactive decay inside the earth, and the heat source is sustainable on a scale of hundreds of millions of years. Deep geothermal development is the fundamental way to solve the future energy problems of mankind. [0003] The use of geotherma...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the above problems and provide a geothermal development system based on deep vertical shafts, which can not only solve the problems of resource scarcity and bankruptcy faced by old mines, but also make some deep resources that cannot meet the mining economic indicators, which can be combined with deep Geothermal development has mining value

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