关键词: 协同开采, 深部矿产资源, 地热资源, 热矿共采, EGS-E

Abstract: In order to solve the high temperature problem faced by deep mineral resources mining and reduce the cost of deep geothermal mining，a synergetic mining mode of mineral and geothermal resources based on an enhanced geothermal system （EGS） based on excavation is proposed.This model takes the temperature of surrounding rock as a scale，and divides the geological resource model into low-temperature resources （below 50 ℃），medium-temperature resources （50~100 ℃） and high-temperature resources （above 100 ℃）.The corresponding mining modes are low-temperature mineral mining modes，medium temperature “co-mining” mode and high temperature geothermal mining mode.For the low-temperature resources， the traditional mineral mining mode is used， with mining resources as the mainstay.The medium-temperature resources adopts the “heat-mining co-mining” model of extracting heat first and then mining.While utilizing the medium-temperature geothermal resources，it also increases the reserves of mineable resources.High-temperature resources use an Enhanced Geothermal Systems based on Excavation technology （EGS-E）， and unique thermal storage fracturing and heat energy exchange technologies to achieve large-scale geothermal resource extraction.The study results show that the synergistic thermal mining mode combines traditional mining technology with an enhanced geothermal system，which can eliminate the impact of heat damage in the middle and high temperature areas and ensure the safe exploitation of mineral resources，and can also realize the goal of the utilization of geothermal resources in the middle temperature area and the large-scale exploitation of geothermal resources in high temperature area；in this model，the mining of medium-high temperature geothermal resources makes up for the soaring cost of mining mineral resources due to the rising temperature，besides that，the pressure of huge investment in the development of deep geothermal resources can be relieved by the exploitation of mineral resources in low temperature area.Therefore，the synergistic mining model proposed in this paper can provide a new scheme for safe and efficient exploitation of deep mineral and geothermal resources.

Key words: Synergetic mining, Deep mineral resources, Geothermal resources, Heat and mineral mining, EGS-E