我国煤田地质勘探的煤层储量计算,一般按煤层的厚度,水平面积及煤层视比重采用值的乘积未进行计算。关于厚度和面积在不同煤层倾角中的应用,在勘探规范中有明确规定,不再赘述。笔者只对视比重在煤层储量计算中(岩浆岩侵入地区煤田)如何选择采用值阐述看法。视比重采用值在煤层稳定地区或者在等灰份煤层中都比较易取,其值变化较小,对于煤层储量计算也较为准确。对于岩浆侵入地区煤田,煤种变化较大、煤岩组成、矿物组成的影响较大,而使煤的视比重及其比重在同一煤层中产生很大的差异。同时,目前视比重的测定方法仍采用块煤涂腊法,在煤块的选取上也存在不可 Coalfield geological exploration coalfield reserves calculation, generally based on the thickness of the coal seam, the horizontal area and the apparent value of coal as the product of the value is not calculated. Regarding the application of thickness and area in different coal seam dip angles, there is a clear stipulation in exploration norms and will not be repeated here. I only view the proportion of apparent weight in the calculation of coal reserves (magma intrusion into the coal field) how to choose to use the value of the view. Depending on the value of the value of stability in the coal seam area or in the ash is relatively easy to take the coal, the value of small changes, the calculation of coal bed reserves are more accurate. For the coalfield intruded into the magma, the coal variety changes greatly, the influence of the coal rock composition and the mineral composition is great, and the apparent specific gravity and the proportion of coal make great difference in the same coal seam. At the same time, the current determination of weight as the method is still using lump coal wax method, the selection of coal also exist