北宿煤矿17#煤层煤质特征研究

Research of 17# Coal Seam in Beisu Coal Mine

以北宿煤矿为研究对象,首先对其地理位置和基础地质做简要阐述,然后通过基础数据和2种绘图软件AutoCAD和Surfer绘制出17#煤层煤厚、灰分、硫分、灰分、水分以及挥发分等值线图。结果表明:17#煤层煤厚中间最薄,并呈现波浪式向东、西方向发展,为薄煤层;灰分含量井田中部最低,向东西方向对称增加然后降低,且西南方向有个灰分高异常点,为低中灰煤;硫分含量北部中部含量最高,向两边逐渐降低,为高硫分煤;水分含量中部最低,向两边逐渐递增;挥发分含量分布较均匀。煤层的成煤条件为滨海过渡沉积,这种成煤环境煤层煤质特征横向变化不大,较为均匀。

This dissertation selects Beisu coal mine as the studied area. First, the geographical location of the Beisu coal mine and basic geological is briefly described. Then through the basic data and two of the drawing software AutoCAD and Surfer, 17# coal seam thickness, ash yield, sulphur content, moisture and volatile are studied and mapped out. Results show that： 17# coal seam thickness can be divided into thin seam. Its horizontal distribution is that it is thin at the centre part and becomes thicker and thicker to the outside wavily. The ash content can be divided into low ash coal, the lowest part also locates at the centre part of the coal mine. From the centre to the east and the west, it increases and then reduces symmetrically. And there is an abnormally high point at the southwest area. The sulfur content can be divided into high sulfur coal, the highest part locates at the centre part of coal mine, from the centre to the east and the west, it reduces symmetrically. The lowest part of the moisture content locates at the centre part of coal mine, from the centre to the east and the west, it increases symmetrically. The Volatile content distribution is stable each direction. The conditions for the coal seam into coastal transition, the sedimentary environment into coal seam coal character very much, and the lateral changes more uniform.