Excavation and construction of No.1 return air shaft in Liaoning Sishanling Iron Mine

Project Name: excavation and construction of No.1 return air shaft in Liaoning Sishanling iron mine and roadway development of bid section II

Project location: Sishanling Manchu Township, Nanfen District, Benxi City, Liaoning Province

Project Profile:

1. The excavation and construction of No.1 return air shaft in Sishanling iron mine includes the excavation and support of shaft neck, shaft, matoumen, water transfer station, etc. The net diameter of the shaft is Φ 7.5m, the wall thickness of the normal section is 500mm, the depth of the shaft is 1110m, and the excavation volume is about 64000 m3 (including matoumen, water transfer station, etc.). The amount of support is about 16000 m3.

2. The roadway development project of the second bid section includes the excavation and support engineering of - 900ml middle section and - 960ml middle section roadway chamber engineering and mining and cutting engineering. The total excavation volume of the project is 292000 m3, the support volume is 18000 m3, the number of anchor bolts is 22736, and the mesh is 72t.

Project status: under construction