高应力巷道治理底臌技术研究及实践

Based on the floor heave phenomenon of the high ground stress roadway, the theory of "strong soft strong structure" is used to analysis the support principle of the middle floor pressure-relieving groove. It uses the support method of the middle floor pressure-relieving groove to control the floor heave and do further research. Meanwhile, the surrounding rock of roadway must be supported in high strength. Because the construction of the middle floor pressure-relieving groove is complicate and difficult, it is rarely used. In order to overcome the construction problem, the technology of "blast two times" is adopted. The construction progress is not affected. It successfully solves the construction problem of the middle floor pressure-relieving groove through the optimizing the technological method and parallel work.