银川盆地天山海世界地热勘探重力数据三维反演研究

Three-dimensional Inversion of Gravity Data from Global Geothermal Exploration in Tianshan Sea World in Yinchuan Basin

地热能作为一种清洁能源,受到了越来越多学者以及政府部门的关注。地热能大多集中分布在构造板块边缘,而中国拥有着独特的“阶梯状”地形,处于板块碰撞边界的地区较多,地热资源储量丰富,但存在勘探和利用水平较低等问题。银川盆地蕴含丰富的地热资源,为沉积盆地传导型地热区,具有很大的地热资源开发潜力。重力异常主要反映了地下岩石的密度差,而重力勘探方法因其成本低、勘探面积广而被广泛应用于地热勘探,尤其是地热远景区的划分。利用重力三维反演方法对银川盆地天山海世界重力数据进行三维反演,获得区域地下三维密度结构,为后续该地区地热资源的勘探与利用提供基础。

As a kind of clean energy,geothermal energy has been paid more and more attention by scholars and government departments.Geothermal energy is mostly concentrated in the tectonic plate margin,and China has a unique"ladder"topography,more areas in the plate collision boundary,geothermal resources are rich,but there are problems of low exploration and utilization.Yinchuan Basin contains abundant geothermal resources and is a conductive geothermal area of sedimentary basin,which has great potential for geothermal resources development.Gravity anomaly mainly reflects the density difference of underground rocks,and gravity exploration method is widely used in geothermal exploration,especially in the division of prospective geothermal areas,because of its low cost and wide exploration area.The three-dimensional gravity inversion method was used to invert the world gravity data of Tianshan Sea World in Yinchuan Basin,and the regional three-dimensional density structure was obtained,providing a basis for the exploration and utilization of geothermal resources in this area.