煤巷锚杆支护技术新突破--一种预应力桁架支护技术

Bolt supporting has become the main support technology in the coal roadway currently, but we have to get rid of the stale and bring forth the fresh in complex conditions which still exists a lot of safety and technology issues. This paper detailed expound a new pattern support technology of pretension trusses, which contains its conception, function mechanism, the excellence to anchor cable, idiographic forms and construction technique. At last we give a successful instance in Huaibei Xutuan Coal Mine, which indicates the new support technology is a breach and innovation to the coal roadway bolt supporting and has the prodigious popularized value and great application foreground.