贵州省六盘水煤田煤炭地下气化资源评价

根据六盘水煤田已有的大量文献、煤勘、钻探、物化探等地质资料,研究区内各赋煤构造单元含煤地层的水文地质情况、煤层发育情况、煤厚、煤质、埋深、上覆地层及下伏地层情况、工程地质条件、构造发育条件、有害元素情况等;结合最新矿权分布情况;立足贵州省地质构造复杂、薄煤层占比较高、煤层群发育的现状;基于FAHP构建煤炭地下气化资源评价层次结构模型,建立8个一级评价指标和24个二级评价指标,采用模糊层次综合评价法进行六盘水煤田煤炭地下气化资源评价。评价面积共计4091.81km^2,可进行煤炭地下气化的资源总量647亿t;其中有利区资源量90亿t,面积1140.62km^2;一般区资源量287亿t,面积1398.79km^2,潜力区资源量270亿t,面积1552.4km^2。评价结果显示六盘水煤田煤炭地下气化潜力巨大,可着重在有利区内进行工程示范。

Assessment of Coal Underground Gasification Resources in Lupanshui Coalfield,Guizhou Province

Based on available substantial documents,coal exploration,drilling,geophysical and geochemical prospecting data in the Lupanshui coalfield have studied the area’s coal hosting structural units coal-bearing strata hydrogeological situation,coal seam development,coal thickness,coal quality,buried depth,overlying and underlying strata,engineering geological,structural development conditions,harmful elements situation etc.Combined with up to date mining right distributions,footing on Guizhou Province complex geologic structure,higher proportion of thin coal seams,coal seam group development status quo;based on fuzzy analytic hierarchy process has established coal underground gasification resource assessment hierarchical model.Thus established 8 first order assessment indices and 24 second order assessment indices,through FAHP comprehensive assessment method carried out Lupanshui coalfield underground gasification resource assessment.Total assessed area is 4091.81km^2,underground gasifiable resource total 64.7 billion tons,in which favorable area resource 9 billion tons with area 1140.62km^2;generic area resource 28.7 billion tons with area 1398.79km^2;potential area resource 27 billion tons with area 1552.4km^2.The assessed result has shown that the underground gasification potential in the area is huge,thus to carry out project demonstration in favorable area can be emphasized.