青海省陆相可燃冰的寻找方向及技术方法探讨
Search Direction and Technical Method of Continental Combustible Ice in Qinghai
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摘要: 可燃冰是清洁的新兴能源,其勘查和开发具有重大的现实意义.依据陆相可燃冰形成的3个条件,指出了青海省寻找陆地可燃冰的方向,即以中祁连侏罗纪含煤盆地为主,其次为青海南部的乌丽盆地.可燃冰主要赋存在向斜构造中部的永冻层与非永冻层之间,目前寻找陆相可燃冰的技术方法主要有地球物理勘查和钻井勘探等.由于可燃冰的赋存位置被永冻层完全掩盖,因此,在寻找可燃冰的前期阶段物探工作尤为重要.笔者认为物探方法中以直流激电测深的勘查效果较好.Abstract: The combustible ice is a kind of new clean energy,and its exploration and development is of great practical significance.We have been engaged in the long-term exploration of coal geology,and are very familiar with the Jurassic Age coal-bearing basin in the Mid-Qilian Area.Based on the three main conditions for the formation,we pointed out the direction of searching for the terrestrial combustible ice in Qinghai province:the main body should be the Jurassic Age coal-bearing basin in the Mid-Qilian Area,and the second is the Wuli Basin in South Qinghai.The combustibleice mainly exists in the int erlayer between the permanent and the non-permanent frozen layers of the middle synclinal structure in these coal field areas.The method of searching for the combustible ice are mainly geophysical technology,well drilling and exploration etc.Because the combustibleice layers are completely covered up by the permafrost,the geophysical prospecs are very important for searching the combustible ice in earlier stage.So,we think the direct-current elect ricity sound in the geophy sical prospecting is of better effect.
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