Liaoning Benxi ultra-large deep well Yuecheng well reaches new heights

The No.1 return air shaft of Sishanling iron mine of Benxi Longxin Mining Co., Ltd. contracted by the company made another great achievement in December, achieving 120.6 meters of ultra deep shaft excavation and construction in a single month, with a total of 6843.45 cubic meters of excavation and 1515.46 cubic meters of support. This is the second time that the monthly well completion has exceeded the 100m record since the commencement of construction.

Among the auxiliary shaft, measure shaft and 1 ා return air shaft under construction in the mining and beneficiation project of Sishanling iron mine, the No.1 return air shaft constructed by our company is the latest to start construction, but at present, it is the deepest to dig under the shaft. In the process of shaft construction, the project department pays close attention to the construction organization, safety and quality and other site management work. Especially since this year, the project department has overcome the adverse factors such as less effective operation time, large water inflow in the shaft, restricted drainage, severe cold weather, etc., and carefully organizes the construction, safe, high-quality and efficient production from the aspects of paying close attention to process connection, on-site shift handover, increasing assessment, etc The key point is to strengthen the drainage system management and improve the blasting efficiency, so as to realize the continuous and stable production of No.1 return air shaft.