Main shaft and air intake shaft project of transferring open pit mining to underground mining in Malanzhuang Iron Mine Co., Ltd., Tangshan Shougang, Hebei Province

Project Name: open pit to underground mining shaft excavation and roadway development project of Tangshan Shougang Malanzhuang Iron Mine Co., Ltd

Project location: Malanzhuang Town, Qian'an County, Hebei Province

Project Profile:

Shaft engineering 1

(1) The net diameter of main shaft is Φ 5.6m, the wall thickness of normal section is 300 mm, the well depth is 856.7 m, and the excavation volume is 29808 m3 (including matoumen, etc.). The amount of support is 7040m3 and the amount of reinforcement is 15t.

(2) The net diameter of the air intake shaft is 4.5m, the wall thickness of the normal section is 300mm, the depth of the shaft is 556.7m, the excavation volume is 130976m3 (including the horse head gate, etc.), the support volume is 3033m3, and the reinforcement volume is 25t.

2. Underground - 80ml, - 140ml middle crosscut development, the total excavation work is about 5300 m3.

3. Underground - 218ml middle crosscut roadway, transportation roadway, traction substation and various chambers, chutes, etc., with a total excavation quantity of about 58000m3.

Project status: under construction