摘要
对于厚煤层或松软的中厚煤层工作面,为了防止片帮及其引起的冒落,应设置护帮装置。护帮装置应具有一定的支撑能力和调节余地。为了研究护帮机构的防片帮效果,以ZZ12000/30/50大采高液压支架为例,应从机构的工作原理、受力分布和强度等方面进行详细的分析。
Thick coal seam or loose in thick coal seam mining face should be set for the face guards devices,in order to prevent rib spalling and its cause falls.The device should have some of the support ability and the adjusting range.In order to research the effect of prevention rib spalling,we should carry out detailed analysis from the principles of the institutions and the stress distribution and strength and so on.We take the ZZ12000/30/50 hydraulic support with large mining height for example.
出处
《煤矿机械》
北大核心
2012年第10期85-87,共3页
Coal Mine Machinery
关键词
煤壁片帮
护帮装置
液压支架
coal wall spalling
face guards device
hydraulic support
