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Main Shaft through No.4 Coal Seam Strengthen and Support Programs
Author(s): 
Pages: 33-34
Year: Issue:  3
Journal: Coal

Abstract: 介绍了主斜井在掘进过程中穿越4号煤层采空区的加强支护方案,掘进期间严格控制循环进尺.采用掘一喷一的方式,并根据现场实际情况更改锚索的长度.同时采用片石、砂浆对采空区进行填充,之后对采空区段进行素混凝土浇筑,根据目前效果看,采用的支护方案安全、可靠、有效,值得推广应用.
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