盆地基底古热流求取方法

Basin basement palaeo-heat flow calculation method

盆地基底古热流是实现盆地地热场模拟的基础边界参数条件。为了求取这个边界参数,以“剥层”法模型为基础,通过大地构造背景类比法确定盆地演化过程中莫霍面古热流值,以现今地壳结构为约束条件类比古地壳结构,从今至古反演求取了盆地基底的古热流。该方法使用较为简单,已在一些盆地的地热场模拟中得到了较好的应用。

Basin basement palaeo-heat flow is a basic boundary parameter condition to realize basin geothermal field simulation.To calculate this boundary parameter,mohorovicic discontinuity palaeo-heat flow value during basin evolution process is identified through geotectonic background analogy method based on 'peeling' method model,and the basin basement palaeo-heat flow is calculated through inversion from today to antiquity with current tectonic structure as constraint condition for palaeo-crustal architecture analogy.The method is simple,and is well applied in geothermal field simulation in some basins.