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一、前言根据美、西德等三国高温岩体热能联合第二阶段开发计划，在美国新墨西哥州的洛丝·阿拉莫斯研究所对280—320℃的高温花岗岩体进行了三口深井钻探，并向井内注水作岩层压裂实验，置换抽取热能。深井钻探从1979年4月开始，至1984年6月结束。整个试验是成功的。施工区地表750m以下为坚硬致密晶质花岗岩和变质岩体。EE-2井终孔深4660m（垂深4391m），岩盘温度约320℃。EE-3与EE-2井间距50m，井深
I. Preface According to the second stage development plan of thermal rock mass heat in the three countries such as the United States and West Germany, three high-temperature granite bodies at 280-320 ℃ were drilled in three deep wells at the Los Alamos Institute in New Mexico, USA Injecting water into the well for fracturing the rock, replacing the extraction of heat. Deep well drilling commenced in April 1979 and ended in June 1984. The whole experiment is successful. Below the surface 750m in the construction area are hard and dense crystalline granites and metamorphic rocks. EE-2 well hole depth 4660m (vertical depth 4391m), rock temperature of about 320 ℃. EE-3 and EE-2 well spacing of 50m, well depth