Sectioned-collecting and graded-raising structure for wastewater of mining method deeply-buried underwater transportation tunnel

Abstract

The invention discloses a sectioned-collecting and graded-raising structure for wastewater of a mining method deeply-buried underwater transportation tunnel, and relates to the technical field of underwater transportation tunnels. Wastewater pump houses are arranged at the lowest points of a tunnel section A, a tunnel section B and a tunnel section C correspondingly; the middle wastewater pump houses and the lowest wastewater pump house are both composed of wastewater pools and wastewater pumps, wherein the wastewater pumps are located in the wastewater pools; the wastewater pump houses of the tunnel section A and the tunnel section C are arranged under a left-end tunnel ventilation shaft and a right-end tunnel ventilation shaft correspondingly, and wastewater lifting pipes in the wastewater pump houses in the tunnel section A and the tunnel section C are connected to outdoors through the corresponding tunnel ventilation shafts correspondingly; and the wastewater pump in the lowest wastewater pump house is connected with the wastewater pool in the tunnel section C through a wastewater raising pipe. The sectioned-collecting and graded-raising structure for the wastewater of the mining method deeply-buried underwater transportation tunnel has the advantages that a big wastewater pool is changed into the small wastewater pools, a big pump is changed into the small pumps, water draining is convenient and rapid, the safety and high efficiency are achieved, the pump house occupied land is reduced, and the construction cost and the pump house running cost are saved.

Description

technical field [0001] The invention relates to the technical field of underwater traffic tunnels, in particular to a mining-method deep-buried underwater traffic tunnel waste water segmental collection and classification lifting structure. Background technique [0002] Deep-buried underwater traffic tunnels are usually long in length, deeply buried, and large in cross-section. Such tunnels usually appear in submarine traffic tunnels. The geographical location of these tunnels is relatively special. At the same time, the tunnel has important functions and has high requirements for drainage. The mining method is one of the most common methods of tunnel construction. The underwater traffic tunnels of this construction method generally need to discharge a very large amount of wastewater; It is a problem that is difficult to solve perfectly. In order to discharge the waste water of such tunnels cost-effectively, higher requirements are put forward for the drainage form. At pre...

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Problems solved by technology

Although this can satisfy the drainage function, there are great deficiencies in the economy and safety of the entire wastewater drainage system, which has buried many hidden dangers for the subsequent tunnel operation. The deficiencies are mainly manifested in the following aspects: single-stage lifting The form of drainage greatly increases the head requirements of the drainage pump, which is not conducive to the selection of wastewater pumps, and also increases the pressure resistance requirements for equipment and pipes; the form of single-stage lifting drainage greatly increases the drainage load of the lowest point of the wastewater pump room, and at the same time causes waste water pools The volume increases, and if the volume is too large, it will increase the risk of tunnel construction; the single-stage lifting drainage form does not meet the drainage and energy-saving principle of "high water and high discharge, low water and low discharge", which makes the entire wastewater drainage system run inefficiently for a long time, which is not conducive to energy saving. And it affects the service life of water pump equipment. It is obviously inappropriate to apply the first-level lifting drainage form suitable for general tunnels to deep-buried underwater traffic tunnels and needs to be improved urgently.

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