Abstract:Inclined shaft is an inclined tunnel which is directly connected to the ground and is one of the important underground engineering. Because of shallow buried depth, serious surface weathering and broken rock mass in the entrance section of inclined shaft, the construction of this section is easy to cause ground collapse, and the construction is difficult, especially in the transition section between the lock section and the bedrock, its construction technology and support technology become a problem affecting the entrance section of inclined shaft. In order to ensure the safety construction of the inclined shaft in the transition section, it is necessary to strengthen the support through advance support, manual excavation, lock section and the system measures of joint support from lock section to bedrock section. This measure can solve the problem of complex technology and high cost, and has the characteristics of simple construction technology, rapid support, safety and efficiency.