中国残留煤资源分布特征研究

Study on the characteristics of residual coal resources in China

受限于资源条件和技术水平等因素，长期以来我国形成了大量残留煤资源。对1949～2014年期间国内残留煤的资源量进行了估算，并对其分布情况、赋存条件和煤质等进行了预测。根据成因和特点，将我国残留煤资源可划分为“三下”残留煤资源、薄煤层残留煤资源、保护性煤柱残留煤资源、因条件复杂而无法开采的残留煤资源和采空区残留煤资源等五种类型。1949～2014年期间，我国累计生产煤炭666．19亿t（不含港、澳、台），露天和井工开采分别占6．47％和93．53％。经估算，我国当前的残留煤资源总量达1390．80亿t，其中99．45％（1383．19亿t）由井工开采形成，各类煤矿的资源平均采出率仅为32．39％。我国残留煤资源在华北地区分布最多（38．86％），主要位于8001TI以浅区域（85．50％），且以烟煤为主（76．23％）。

Due to the factors of resource conditions and technical level,a large number of residual coal resources have been remained during the past several decades in China. We estimated the residual coal reserves which had been detained from 1949 to 2014 in China, and predicted the distribution, occurrence conditions and coal properties of these resources. According to the causes and characteristics, residual coal resources are divided into five types： ＂under three＂ resources, thin seam, protective coal pillar, resources unable to be exploited with complex conditions, goal. Between 1949 and 2014, Chinese had cumulatively produced 66.62 billion tons of coal, not including Hong Kong, Macao and Taiwan, in which the output of open-pit and underground mining occupy 6.47% and 93.53%, respectively. Furthermore, We estimated the current residual coal reserves of China, which had achieved 139.08 billion tons, whose 99. 45% （138. 32 billion tons） were formed from the remains of underground mining, and the average recovery rate of resources for all types of coal mines was only 32.39 %. The residual coal resources are most distributed in north China （38.86 %） ,mainly located in the buried depth area less than 800 m （85.50%） ,and primarily bituminous （76.23 %）.