西藏自治区萨迦县卡吾地热地质构造特征及成因初步分析

Preliminary Analysis on the Geological Structure Characteristics and Genesis of the Geothermal in Kawu,Sakya County,Tibet

西藏自“十二五”时期大力实施城镇供暖工程,重点推进高寒高海拔县城的供暖工程建设。萨迦县地处青藏高原高寒山区,该县拟投入中央财政专项资金开展西藏自治区日喀则市萨迦县城清洁能源供暖工程。萨迦县卡吾地热位于EW向伸展构造形成的较为典型的4条近SN走向地堑带之一的申扎-定结地堑带南段,拉轨岗日构造带北部,为地热形成提供了良好地质条件。结合区域地质背景、地热地质特征及地球物理特征的研究成果,分析了卡吾地热资源的运移、储存、成因模式及富集规律。

Since the"12th Five-Year Plan"period,Tibet has vigorously implemented urban heating projects,focusing on the construction of heating projects in high-cold and high-altitude counties.Sakya County,located in the alpine mountains of the Qinghai-Tibet Plateau,plans to invest special funds from the central government to carry out the clean energy heating project in Sakya County,Shigatse City,Tibet Autonomous Region.The Kawu geothermal energy in Sakya County is located in the southern part of Shenzha-Dingjie Graben belt,one of the four typical graben belts near SN strike formed by EW extension structure,and the northern part of Lailuanggri tectonic belt,which provides good geological conditions for geothermal formation.Based on the research results of regional geological background,geothermal geological characteristics and geophysical characteristics,the migration,storage,genetic model and enrichment law of geothermal resources in Kawu are analyzed.