基于有限元模拟的地热资源勘探及分析

Exploration and analysis of geothermal resources based on finite element simulation

在煤矿开采过程中,容易出现高温热害,直接影响了采矿工作的安全性。在避免矿井热害的同时,为了进一步有效利用区域内的地热资源,提出了一种地热资源勘探方法,并对区域内地热分布情况进行分析。以钻孔系统测温法为基准探测结果,并结合研究区域实际情况建立有限元模型。在确定上下边界、参数取值、网格划分方法后,通过数值模拟对区域内地热资源分布及地热产生原因进行了分析。研究结果表明,区域内地热资源量为2.30×10^(19)J,可采热能储量为2.55×10^(18)J,可转换成标准煤0.88亿t。这说明研究区域蕴含巨大的地热资源,具有较高的利用价值。研究成果为区域煤矿开发热害防治以及地热资源综合开发利用提供了地质依据,可进一步促进煤矿开采的可持续发展。

In the process of coal mining,it is very easy to have high temperature heat damage,which directly affects the safety of mining work.In order to avoid the mine heat damage and further utilize the geothermal resources in the region effectively,a method of geothermal resources exploration was put forward and the geothermal distribution in the region was analyzed.The study took the temperature measurement method of the drilling system as the benchmark detection results,the finite element model was established according to the actual situation of the study area.After determining the upper and lower boundaries,parameter values,grid division methods,et al,the study analyzed the distribution of geothermal resources of the region and the causes of geothermal generation through numerical simulation.The results show that the amount of thermal resources in the region is 2.30×10^(19) J,and the recoverable thermal energy reserves are 2.55×10^(18) J,which can be converted into 88 million tons of standard coal.This shows that the study area contains huge geothermal resources and has very high utilization value.The research results provide geological basis for heat damage prevention and comprehensive exploitation and utilization of geothermal resources in regional coal mine development,and further promote the sustainable development of coal mine.