摘要
通过对湖南某矿巷道锚喷支护工程的调查分析 ,发现爆破地震波、支护时间、支护质量、巷道岩面平整度、料浆配比等是引起锚喷支护巷道喷层崩壳开裂和脱落破坏的主要原因 ,并根据围岩应力、喷浆支护特性 。
Through the investigations of blot-shotcreting supporting works of roadways in a certain mine in Hunan, it is found out that the blasting earthquake, supporting timeliness and quality, surface evenness of excavated roadway, mixture ratio of concrete , etc., are the significant things causing the burst ,breaking and caving of shotcrete layer in bolt-shotcreting supported roadway. Based on the stress distribution in surrounding rock and the supporting performance of bolt-shotcreting, this paper puts forward some measures to prevent the failure of shotcrete layer.
出处
《矿业研究与开发》
CAS
2004年第2期28-29,共2页
Mining Research and Development
关键词
巷道
锚喷支护
喷层破坏
预防措施
Roadway, Bolt-shotcreting supporting, Failure of shotcrete layer, Preventive measures
