Flow splitting system between ditches in two sides in water-rich tunnel provided with inclined shafts and flow splitting method of flow splitting system

Abstract

The invention relates to a flow splitting system between ditches in two sides in a water-rich tunnel provided with inclined shafts and a flow splitting method of the split flow system and aims to solve the problem that if too many inclined shafts are located in the same side, and much water is accumulated, so that water flow of drainage ditches, close to the inclined shaft side, in the tunnel is excessively large and water overflows. The flow splitting system comprises two contact culverts, four water accumulation pools and two flow splitting cabins; the two contact culverts are transversely formed below a ballast bed cushion layer of the tunnel, the two ends of each contact culvert are communicated with the corresponding water accumulation pool in the bottom of the corresponding inclined shaft, and one flow splitting cabin is arranged between every two water accumulation pools in the same side of the tunnel; side ditches are formed in the two sides of an overall ballast bed in the tunnel, and the flow splitting cabinets in the two sides of the tunnel are connected to the side ditches in the same side of the tunnel through corresponding pre-buried drain pipes respectively. According to the flow splitting system and the flow splitting method thereof, the communicating vessel principle is utilized to conduct balanced flow splitting on accumulated water in the inclined shafts, the situation that too much water is accumulated in the ditches in the same side and overflows is avoided, and tunnel operation safety is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of tunnel traffic engineering, and in particular relates to a diversion system and a diversion method between water ditches on both sides in a water-rich tunnel provided with an inclined shaft. Background technique [0002] With the emergence of long tunnels, in order to meet the needs of the construction period, many tunnels will be provided with one or more inclined shafts to assist the construction. After the tunnel is completed, the groundwater in the inclined shaft will flow continuously to the bottom of the inclined shaft, and finally flow into the tunnel drainage ditch and be discharged out of the tunnel. In the previous design, a catchment ditch was set at the bottom of the inclined shaft to collect the flowing water in the inclined shaft, and then a drainage ditch was set up to connect the bottom catchment ditch with the tunnel drainage ditch, so that all the catchment water in the inclined shaft wa...

AI Technical Summary

Problems solved by technology

If there are many inclined shafts on the same side and the water catchment of the inclined shafts is large, there will be too much water in the drainage ditch near the inclined shaft and overflow, which poses a threat to the safety of tunnel operation.

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