多参数融合分析下日照市莒县县城东部周边地热资源勘查评价研究

Comprehensive Evaluation of Eco-Geological Environment of Rizhao International Ocean City Based on Expert-Hierarchical Analysis Weighting Method

摘要: 开发地热资源不仅可以加快当地地方经济的发展，而且能带动旅游业的兴旺。为对莒县县城东部周边地热资源勘查应用前景做出量化评价，本文通过水文地质调查、电阻率联合剖面、视电阻率激电测深、EH-4电磁测深、测温钻孔等多参数融合实现对调查区域的地热资源评价分析研究，从而为地热找矿提供数据支持。通过对多参数融合数据分析表明：1) 店子集略庄地区在CSAMT-1线第200点附近，此地段构造发育深度达2000 m以上，宽度超过200 m，倾向SW，倾角75˚，富水性强，增温率好，具备成热成矿条件；2) 陵阳小官河地区在CSAMT-1线第800点附近，此处构造发育深度大于1800 m，倾向NE，倾角75˚左右，富水性强，增温率3.5℃/100m，成热成矿条件较好；3) 碁山镇珠山村地区，AMT-1线480至560点之间靠近560点构造发育深度2000 m，宽度超过200 m，倾向SW，倾角85˚左右，富水性强，增温率2.97℃/100m，具有较好的成热成矿条件。进而，本文建议在调查区略庄CSAMT-1线第200点附近实施地热井钻探，设计孔深2000 m，预计水温大于50℃以上，水量大于2000 m³/d。这为调查区地热资源的合理开发利用提供数值化的指导建议，具有重要的实际应用前景。

Abstract: The development of geothermal resources can not only accelerate the development of local economy, but also promote the prosperity of tourism. In order to make a quantitative evaluation of the application prospect of geothermal resources exploration in the eastern periphery of Juxian County, this paper realizes the evaluation and analysis of geothermal resources in the investigation area through the fusion of multi parameters such as hydrogeological survey, resistivity joint profile, apparent resistivity IP sounding, EH-4 electromagnetic sounding, temperature measurement drilling, so as to provide data support for geothermal prospecting. Through the analysis of multi parameter fusion data, it is shown that: 1) near the 200th point of csamt-1 line, the structural development depth of this section is more than 2000 m, the width is more than 200 m, the dip angle is 75˚ and the dip angle is SW, the water rich property is strong, the temperature increasing rate is good, and it has the conditions of thermogenesis and mineralization; 2) near the 800th point of csamt-1 line, the structural development depth of this section is more than 1800 m and the dip angle is 75˚. In Zhushan village, Qishan Town, the structure between 480 and 560 points of amt-1 line is close to 560 points, with a depth of 2000 m, a width of more than 200 m, a dip angle of about 85˚ and a strong water-rich property, with a temperature increase rate of 2.97˚C/100m. Furthermore, this paper suggests that geothermal well drilling should be carried out near the 200 point of csamt-1 line in luezhuang, the designed hole depth is 2000 m, the water temperature is expected to be more than 50˚C and the water volume is expected to be more than 2000 m³/d. It provides numerical guidance and suggestions for the reasonable development and utilization of geothermal resources in the survey area, and has important practical application prospects.