Based on an actual project,tests and analyses the heat exchanging performances of the vertical U-shaped ground heat exchanger,and obtains the heat release in summer and the heat absorption in winter of ground heat exchanger for unit well depth and the optimal drilling depth.
根据工程实际情况,对竖直U形地埋管换热器的换热性能进行了现场测试和分析,得出了单位井深地埋管的夏季散热量、冬季取热量及最佳地埋管钻孔深度。
An optimum method of calculating drilling hole position in preventing cross-measure cutting coal gas burst is put forward.
提出了在石门揭煤中预防瓦斯突出的一种计算钻孔位置的优化方法。