鲁班山井田8号煤层瓦斯含量分布研究

Study on Gas Content Distribution in No.8 Coal Seam of Lubanshan Mine Field

为确定鲁班山井田8号煤层未知区域的瓦斯分布情况,运用瓦斯地质理论,并结合现有实际瓦斯含量资料,定性、定量地分析了瓦斯赋存的主要地质因素,认为上覆基岩厚度是控制8号煤层瓦斯含量分布的主要因素。煤层瓦斯含量分布呈现出随上覆基岩厚度增加而明显增大的总体规律,根据瓦斯含量与上覆基岩厚度的相关关系,绘制了鲁班山井田8号煤层瓦斯含量等值线图,直观地反映了瓦斯含量分布特征。

In order to determine gas content accurately in unknown area of No.8 Coal Seam in Lubanshan Mine Field,gas geological theory was applied to analyse the main geological factors of gas content as well as with actual gas content data.The results proves that,the thickness of the overlying rock is the main controlling factors to control the distribution of the gas content in No.8 Coal Seam.The gas content of coal increased with the thickness of the overlying bedrock increased.And thus the gas concentration contour map in No.8 Coal Seam of Lubanshan Mine Field which intuitively reflects the laws of gas occurrence has been worked out,in accordance with the relationship of gas content and the thickness of the overlying rock.