Mining method tunnel prefabricated assembled temporary draining system

Abstract

The invention provides a mining method tunnel prefabricated assembled temporary draining system, comprising a plurality of segmental prefabricated draining short slots, wherein a plurality of segmental prefabricated draining short slots are connected orderly through a prefabricated connector to form an U-type opening water collection and drainage channel; the tail end of the water collection and drainage channel is connected with a prefabricated draining opening through the prefabricated connector, and underground water in the water collection and drainage channel is discharged to a water collecting well through a prefabricated draining opening. The temporary draining system can effectively solve the problems of impeded drainage and muddy temporary road caused by large underground surge and late in building a temporary draining ditch when a tunnel at a water-rich karst area or a water-rich soil-rock combination stratum area is built by the mining method; the system can greatly improve the construction efficiency of the temporary drainage system, reduce waterlog in the tunnel, and decrease safety risk of foundation and arch by water immersion and softening; moreover, the prefabricated assembled temporary draining system is low in cost, and can be turned over, and can significantly reduce the safety civilized measure cost in the tunnel construction.

Description

technical field [0001] The invention mainly relates to the field of civil engineering construction, in particular to a prefabricated and assembled temporary drainage system for mining tunnels. Background technique [0002] When the mine method is used to build tunnels in water-rich karst stratum areas or water-rich soil-rock combined stratum areas, after the initial shotcrete at the arch is closed, the shotcrete at the bottom of the arch is relatively lagging behind, and the hydraulic channel at the arch above is blocked, often in the tunnel. There is a large amount of water gushing at the weak point of the tunnel arch foot (the joint surface between the bottom plate and the arch). Especially in the water-rich soil-rock combination stratum, if the arch foot falls on the soil-rock combination surface layer, the water inflow will be greater. Since the soil-rock interface is located at the hydraulic channel of the original interface, it has been immersed in groundwater for a l...

AI Technical Summary

Problems solved by technology

[0004] However, the traditional temporary drainage system has disadvantages such as low construction efficiency and poor effect, especially in water-rich clay-karst formations, where there are many outlet points and wide distribution of groundwater. , there will still be situations where the temporary road is muddy, and the foundation and arch feet are soaked and softened by water

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