论文部分内容阅读
众所周知,在苏联东部和北部的煤田中,开采厚煤层时,几乎只在巷道中才发生煤和瓦斯突出。这些煤田的采深为300～400米,并在不断地增加。 我们分析了顿巴斯1953～1980年期间开采不同深度的突出危险煤层的经验,这些煤层的平均厚度小于1.5米,但在发生煤和瓦斯突出的区段,煤层厚度增加到1.5米以上。在此期间这些煤层中发生的煤和瓦斯突出的次数按煤层产状和突出地点列于下面。
It is well known that coal and gas outbursts occur almost exclusively in tunnels when mining thick coal seams in eastern and northern Soviet coalfields. The mining depth of these coal fields is 300 to 400 meters and is constantly increasing. We have analyzed the experience of the Donbass mining of prominent dangerous coal seams of different depths between 1953 and 1980. The average thickness of these coal seams is less than 1.5 m. However, in the coal and gas outburst sections, the thickness of the coal seams is increased to more than 1.5 m. The number of coal and gas outbursts that occurred in these coal seams during this period was based on the occurrence of coal seams and the prominent locations below.