摘要
汝州煤田夏店井田主采煤层为二1煤,由于后期构造影响成为构造煤,其厚度总体为东厚西薄,在西部又表现为北厚南薄。根据沉积特征分析,二1煤厚度与大占砂岩密切相关,砂体呈向北东方向指状分叉展布,井田西南部二1煤遭受大占砂岩分流河道的冲刷,使煤层变薄,甚至可能完全被冲刷,形成无煤带。
The mian mineable coal seam in the Xiadian minefield,Ruzhou coalfield is the II1 coal.It is a kind of tectonoclastic coal caused by succeeding structural impacts;its thickness appears as thick east and thin west;while in western part,thick north and thin south.According to sedimentary characteristics,the thickness of II1 coal has close relation with the Dazhan sandstone,the sandstone body presents fingerparted splitting northeastward,II1 coal is scoured by Dazhan sandstone distributary channels in southwestern minefield,makes coal seam thinning even totally scoured and forms barren zone of coal.
出处
《中国煤炭地质》
2009年第A02期28-30,共3页
Coal Geology of China
关键词
夏店井田
沉积环境
大占砂岩
煤层厚度
Xiadian minefield
sedimentary environment
Dazhan sandstone
coal seam thickness
