The section mining method is based on the division stage, and then the stage is divided into sections, each of which forms an independent mining and ventilation system. During the continuous mining, the temporary top and bottom columns are reserved between the sections, or only the temporary bottom column (or the top column) is retained, so as to be divided into strip-shaped mine houses and pillars along the inclined direction of the ore body, and the first mining room, and at the same time Back to the mining column, but the former maintains a certain distance from the latter. In the case of discontinuous mining, the temporary column is left at a certain distance in the section, and it is divided into several mining units (mines), first mining room, and then mining the inter-column and top column adjacent to the mining room, and at the same time Handling gobs. Applicable conditions One of the important features of this law is that it can effectively control the exposed area of ​​the roof when recovering by relying on reasonable selection of the section height and the structural parameters of the temporary pillar, so it can be used to mine ore and surrounding rock in moderately stable ore bodies. Since each segment has an independent ore-mining system, different ore structures can be used to solve the ore transportation according to different inclination angles of the ore body, and the inclination range of the ore body can be wide, from gentle inclination to steep inclination. However, the mining and cutting engineering of this method is very large. Mainly used for mining ore bodies above medium thickness. When in recent years, in our ferrous metals, non-ferrous metals and chemical mining gently inclined inclined thick ore body above, the Act gained more use and development
Besides the commonly seen Overhead Crane and Gantry Crane , Weihua also provide specail cranes such as Jib Crane , Derrick Crane , Wind Turbine Maintenance Crane, deck cane, Roof Panel Making Truck Crane, Lift Platform , etc.
Jib crane can be Floor Fixed Jib Crane, wall jib crane. Derrick crane can be used at dockside, road construction site, etc. Wind turbine maintenance crane is employed to lift generator of wind turbine. Deck Crane is fixed on cargo ship deck. Roof panel making Truck Crane is a truck crane with roof panel making function. Lift platform is mobile crane for high-altitude manual work.
Weihua was founded in 1988, is a China leading crane manufacturer. Weihua has been committed to heavy machinery researching and marketing. The main product covers lifting machinery, port machinery, mining machinery and construction machinery, etc. The whole coverage of Weihua Group is 3,420,000 m2 with 6,800 employees.
In recent years, Weihua cranes have been employed to serve China's Aerospace Engineering projects such as launching of Shenzhou spacecraft, Long March carrier rockets and Tiangong space laboratory. You can also find Weihua products in the fields of manufacturing, metallurgy, nuclear power, railway, port, petrochemical and wind power.
Special Crane Wall Crane,Special Crane,Wall Traveling Jib Crane,Rail Traveling Jib Crane Henan Weihua Heavy Machinery Co., Ltd. , https://www.hoistcrane.nl
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