Numerical simulation on heat hazard control by collaborative geothermal exploitation in deep mine

被引：0

作者：

Li Z. ^{[1
]}

Xu Y. ^{[1
]}

Jia M. ^{[1
,2
]}

Liu H. ^{[1
]}

Pan W. ^{[1
]}

Deng Y. ^{[1
]}

机构：

[1] School of Resources and Safety Engineering, Central South University, Changsha

[2] Sinosteel Maanshan General Institute of Mining Research Co. Ltd., Maanshan

来源：

Xu, Yu (xy1235813@sina.com) | 2021年 / Central South University of Technology卷 / 52期

基金：

中央高校基本科研业务费专项资金资助;

关键词：

Collaborative production; Mineral geothermal; Numerical simulation; Thermal hazard control;

D O I：

10.11817/j.issn.1672-7207.2021.03.002

中图分类号：

学科分类号：

摘要：

The method for collaborative geothermal exploitation was proposed, and a fully coupled model was developed to analyze the geothermal exploitation process and performance of heat hazard control. The results show that a large amount of ventilation in the mine can reduce the temperature in the roadway, but the temperature decreases slowly and slightly. The temperature of surrounding rock and airflow in the roadway decreases rapidly and obviously after the heat production by continuous injection and production in the strata below the mining layer. When the temperature at the head of the tunnel is decreased by the cold mass injection rock, the temperature at the back of the tunnel is also significantly reduced. In the early stage of heat recovery, the heat production channel near the injection well side has the largest thermal extraction efficiency. With the increase of the heat recovery time, the heat production temperature of production fluid of the system reduces. The heat recovery of one heat production channel is 1.68×1015 J within 10 years. © 2021, Central South University Press. All right reserved.

引用

页码：671 / 680

页数：9

共 24 条

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