This model did not need exact information of the buried U-tube location, spacing between up and down tubes, the properties of the tubes and backfills, and other parameters in borehole as usual cases.

• 该方法克服了其它模型对钻孔中埋管的具体位置、上升管和下降管之间的距离以及埋管和回填材料的物性等参数的要求，相应消除上述参数测量带来的误差。