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我国煤矿在水体下积压了大量煤炭资源,据有关方面统计,全国各矿区在河流、湖泊、第四纪含水松散层以及地表积水区等各类水体下压煤量近40亿吨。由于水体压煤具有量大面广的特点,如果不开采,不仅不能合理开发资源,而且造成矿区建设和矿井开采技术上的困难。以往在解决水体下采煤问题时,因缺乏经验,曾经走过一段弯路。例如,在留设防水煤柱尺寸方面,一些矿区曾按照国外的经验,把水体和建筑物两者同
According to the relevant statistics, coal mines in all mining areas have nearly 4 billion tons of coal under various types of bodies of water such as rivers, lakes, quaternary aquiferous loose areas and surface water storage areas. Because of the large amount of water with a wide range of characteristics of coal, if not mining, not only can not reasonably develop resources, but also caused the construction of mining and mining difficulties in technology. In the past to solve the problem of coal mining under water, due to lack of experience, has come a long way. For example, in leaving the size of waterproof coal pillars, some mining areas in accordance with the experience of foreign countries, the water and buildings are both the same