Sewage station cavern group structure in long tunnel cavern

Abstract

The utility model discloses a cavern group structure of a sewage station in a long tunnel. The most common treatment mode of tunnel wastewater in China at present is that a wastewater treatment plant is built near a tunnel portal. The cavern group structure disclosed by the utility model is arranged in an auxiliary tunnel; sewage collecting ditches are longitudinally formed in the starting and stopping positions, close to the cavern side, of the sand setting cavern along the auxiliary underground tunnel till the rotational flow sand setting cavern is stopped; sewage flowing out of the sand setting cavern enters the rotational flow sand setting cavern from the sewage collecting ditch in a gravity flow manner; the rotational flow sand setting cavern is connected with the adjusting and setting cavern, and the adjusting and setting cavern is connected with the vortex setting cavern; the vortex precipitation cavern is connected with the filtering cavern, and the vortex precipitation cavern is connected with the sludge concentration cavern; the filtration cavern is connected with the sludge concentration cavern, and the sludge concentration cavern is connected with the filter pressing cavern. According to the utility model, the waste water treatment cavern can be built by adopting fewer support measures, so that the expropriation of forests (grasses) for building factories outside the cavern is avoided, the ecological environment is protected, and the investment is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnels and underground engineering, and in particular relates to a cavern group structure of a sewage station in a long tunnel. Background Art

[0002] The experience accumulated in the treatment of tunnel wastewater during the construction of existing domestic tunnels is relatively limited, which brings great difficulties to the treatment of wastewater during tunnel construction. Among them, the most common treatment method is to build a wastewater treatment plant near the tunnel entrance. Existing tunnel wastewater treatment stations are often located in areas with gentle terrain at the tunnel portal. Usually, a large area of ​​forest (pasture) land is required to build a factory building and treat the sewage through a multi-stage circulation method. For high-altitude ecologically fragile areas, wastewater treatment plants outside the tunnel are not conducive to the protection of the local ecology. In addition, in order to prevent extreme conditions such as seasonal freezing and thawing, additional pipeline protection measures need to be added, which requires additional investment. Utility Model Content

[0003] In order to make up for the shortcomings of the existing technology, the utility model provides a cavern group structure of a sewage station in a long tunnel, which makes full use of the auxiliary tunnel (cross tunnel) with better surrounding rock to respectively set up sand settling caverns, cyclone sand settling chambers, regulating sedimentation chambers, eddy current sedimentation chambers, filtering chambers, sludge concentration chambers and filter press chambers, which can reduce the dependence on the site outside the tunnel gate, reduce the damage to vegetation, weaken the impact of freezing and thawing, and save investment.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A chamber group structure of a sewage station in a long tunnel, characterized in that: the chamber group structure is arranged in an auxiliary tunnel;

[0006] It includes sand settling caverns, cyclone sand settling caverns, regulating sedimentation caverns, eddy flow sedimentation caverns, filtration caverns, sludge concentration caverns and filter press caverns;

[0007] A sewage collection ditch is arranged longitudinally along the auxiliary tunnel at the starting and ending positions of the sand settling chamber, near the side of the chamber, and ends at the cyclone sand settling chamber; the sewage flowing out of the sand settling chamber flows into the cyclone sand settling chamber through the sewage collection ditch by gravity flow;

[0008] The cyclone sedimentation chamber is connected to the regulating sedimentation chamber via a gravity pipe, and the regulating sedimentation chamber is connected to the vortex sedimentation chamber via a pressurized pipe; the vortex sedimentation chamber is connected to the filtering chamber via a pipe, and the vortex sedimentation chamber is connected to the sludge concentration chamber via a pressurized pipe;

[0009] The filtering chamber is connected to the sludge concentration chamber, and the sludge concentration chamber is connected to the filter press chamber.

[0010] Furthermore, the sand settling chamber includes a sand settling tank, and ditches and reverse ditches are respectively arranged on both sides of the sand settling tank. The reverse ditches are connected to the sewage collection ditches, and DN200 cast iron gates are provided in the sewage collection ditches at the inflow and outflow of sewage in the sand settling tank to control the flow.

[0011] Furthermore, a 3‰ cavern water ditch is arranged in the cyclone sand settling cavern, the cavern water ditch is connected to the sewage collection ditch and the grille well, the grille well is connected to the No. 1 sewage pump well, and the No. 1 sewage pump well is connected to the cyclone sand settling device.

[0012] Furthermore, a mud hopper, a regulating sedimentation tank, a traveling mud scraper and a No. 2 sewage pump well are sequentially arranged in the regulating sedimentation cavern, and the mud hopper is connected to a cyclone sand settling device.

[0013] Furthermore, a vortex sedimentation chamber is provided with a vortex sedimentator to treat the sewage from the No. 2 sewage pump well.

[0014] Furthermore, a valveless filter is arranged in the filter chamber.

[0015] Furthermore, the sludge concentration cavern is provided with a recycled water pool, a sludge concentration pool and a pressure pump well.

[0016] Furthermore, a sludge tank, a screw pump and a plate and frame filter press are arranged in the filter press cave chamber.

[0017] Beneficial effects of the utility model:

[0018] 1) The utility model utilizes the auxiliary tunnel (horizontal tunnel) of the tunnel, selects the section with better surrounding rock in the horizontal tunnel, and sequentially excavates the sand settling cavern, cyclone sand settling cavern, regulating sedimentation cavern, vortex sedimentation cavern, filtering cavern, sludge concentration cavern and filter press cavern. The clean water of the construction is directly discharged from the clean water ditch; the waste water is discharged from the reserved ditch by using the slope of the horizontal tunnel itself to pass through the above caverns step by step, so as to achieve the purpose of treating the construction waste water; after being treated to meet the discharge requirements, it can be discharged by gravity through the horizontal tunnel ditch;

[0019] 2) The utility model makes full use of the internal space of the better surrounding rock section of the existing auxiliary tunnel cross tunnel, and adopts fewer support measures to build a wastewater treatment cavern, avoiding the requisition of forest (pasture) land for building factories outside the cave, protecting the ecological environment, and reducing investment;

[0020] 3) The utility model takes advantage of the relatively constant temperature in the tunnel to reduce the impact of the plateau freeze-thaw environment on the wastewater treatment equipment;

[0021] 4) The sewage treatment chamber group of the utility model can be flexibly arranged according to the hydrogeological conditions of the tunnel, and can be arranged in large sewage sections for timely treatment. The treated water can not only be used for tunnel construction, but also can dissolve chemicals to circulate and treat construction sewage, thereby achieving the purpose of saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the sand settling cavern of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the cyclone sand settling chamber of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the regulating sedimentation cavern of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the eddy flow sedimentation chamber of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the filter chamber of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the sludge concentration chamber of the utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the filter press chamber of the utility model;

[0030] In the figure, 1-sand settling chamber, 2-cyclone sand settling chamber, 3-regulating sedimentation chamber, 4-vortex sedimentation chamber, 5-filtration chamber, 6-sludge concentration chamber, 7-filter press chamber. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with specific implementation methods.

[0032] like Figure 1 As shown, the chamber group structure of the sewage station in the long tunnel of the utility model is arranged in the section with better surrounding rock in the cross tunnel of the auxiliary tunnel; in each figure, J represents a water supply pipe, JY represents a dosing pipe, W represents a sewage pipe, YN represents a pressure sludge pipe, F represents a wastewater pipe, and H represents a return pipe;

[0033] The utility model comprises a sand settling chamber 1, a cyclone sand settling chamber 2, a regulating sedimentation chamber 3, a vortex sedimentation chamber 4, a filtering chamber 5, a sludge concentration chamber 6 and a filter press chamber 7; the spacing between the chambers is 1.5 times the width of the chamber;

[0034] A sewage collection ditch is set up along the longitudinal direction of the auxiliary tunnel near the side of the cavern at the starting and ending position of the sand settling cavern. The sewage from the main tunnel construction flows into the sand settling tank through the ditch for gradual treatment. The sewage collection ditch ends at the cyclone sand settling cavern. The sewage flowing out of the sand settling cavern flows into the grille well inside the cyclone sand settling cavern through the sewage collection ditch by gravity flow.

[0035] The cyclone sedimentation chamber is connected to the regulating sedimentation chamber through a gravity pipe, and the regulating sedimentation chamber is connected to the vortex sedimentation chamber through a pressurized pipe; the vortex sedimentation chamber is connected to the filtration chamber through a pipe, and the vortex sedimentation chamber is connected to the sludge concentration chamber through a pressurized pipe;

[0036] The filtering chamber is connected to the sludge concentration chamber, and the sludge concentration chamber is connected to the filter press chamber.

[0037] like Figure 2 As shown, the grit chamber includes a grit chamber, and a ditch and a reverse ditch are respectively arranged on both sides of the grit chamber, and the reverse ditch is connected to the sewage collection ditch. Construction sewage flows from the sewage collection ditch into the grit chamber ditch by falling; the slope of the grit chamber ditch is 3‰, and the sewage flows into the grit chamber No. 1 of the grit chamber by gravity flow, and overflows after preliminary sedimentation, and flows to the sewage collection ditch through the reverse ditch of the chamber (with a slope of -3‰), and then flows to the grit chamber No. 2, grit chamber No. 3 and grit chamber No. 4 in the grit chamber by gravity flow, and the SS concentration of the effluent can generally be reduced to below 900 mg / L at this time. In order to control the sewage flow, DN200 cast iron gates are provided at the sewage collection ditch at the inflow and outflow of sewage in the grit chamber. In this embodiment, there are 4 grit chambers, including grit chamber No. 1, grit chamber No. 2, grit chamber No. 3 and grit chamber No. 4.

[0038] like Figure 3 As shown in the figure, a 3‰ cavern ditch is set in the cyclone sand settling cavern, which is connected to the grid well, the grid well is connected to the No. 1 sewage pump well through a pipe, and the No. 1 sewage pump well is connected to the cyclone sand settling device through a pipe. The sewage after preliminary sedimentation flows from the No. 4 sand settling tank in the sand settling cavern to the grid well through the sewage collection ditch and the cavern ditch. Large particles, impurities and other solid substances in the sewage are intercepted by the grid well and flow to the No. 1 sewage pump well, and are pumped to the cyclone sand settling tank through the pressure sludge pipe to further remove large inorganic particles. The top of the No. 1 sewage pump well is provided with a water pump start water level and an alarm water level, which can realize the intelligent control of sewage water volume.

[0039] like Figure 4As shown, the regulating sedimentation cavern is provided with a dosing well, a regulating sedimentation tank, a traveling sludge scraper and No. 2 sewage pump well in sequence; the dosing well is connected to the return pump well in the sludge thickening cavern through a return pipe; the cyclone sand settling device is connected to the regulating sedimentation tank through a pressure sludge pipe; the regulating sedimentation tank is connected to the No. 2 sewage pump well through a pipeline, a mud bucket is provided at the front end of the regulating sedimentation tank, a traveling sludge scraper is provided on the upper part, and a 1% slope is adopted for the bottom of the regulating sedimentation tank; the sewage after preliminary treatment flows from the cyclone sand settling device through the pipeline gravity to the dosing well, the mud bucket and the regulating sedimentation cavern. The sewage flows by gravity to the dosing well, which is connected to the dosing room outside the cave through a dosing pipe. After the sewage and the agent are initially mixed in the dosing well, they flow into the mud hopper and the regulating sedimentation tank in turn through overflow. The large particles are precipitated due to their own gravity and the cooperation of the traveling scraper, and are collected in the mud hopper by adjusting the 1% slope at the bottom of the sedimentation tank. The sewage containing smaller particles flows to the No. 2 sewage pump well. The sewage with sludge content in the mud hopper is discharged to the sludge thickening tank in the sludge thickening cavern through the pressure sludge pipeline.

[0040] like Figure 5 As shown, a vortex precipitator is installed in the vortex sedimentation cavern. The No. 2 sewage pump well is connected to the vortex precipitator through a wastewater pipe. The No. 2 sewage pump well pressurizes the precipitated sewage through the pipeline to the vortex sedimentation cavern. A tubular static mixer is provided at the entrance of the vortex sand settling device. The reagent in the dosing room is connected to the tubular static mixer through the dosing pipeline. The sewage and the reagent are mixed and then flow into the vortex precipitator for further treatment. The vortex sedimentation cavern is mainly a sedimentation equipment that promotes the sedimentation of materials through the vortex action. The impurities in the sewage are separated through the free impact flow state, and the sedimentation of the materials is accelerated by gravity. The wastewater treated by the vortex precipitator is divided into two parts. The wastewater containing large particle impurities is pumped to the sludge concentration tank in the sludge concentration cavern through the pressure sludge pipeline for treatment; the wastewater after sedimentation is discharged to the valveless filter through the wastewater pipeline.

[0041] like Figure 6 As shown, a valveless filter is arranged in the filter chamber, and the vortex precipitator is connected to the valveless filter through a wastewater pipe; the main purpose is to remove suspended matter in the sewage and filter it so that the SS concentration of the effluent is less than or equal to 20 mg / L.

[0042] like Figure 7As shown, the sludge concentration cavern is equipped with a reuse water pool, a sludge concentration pool and a return pump well. The valveless filter is connected to the reuse water pool through a pipeline, and the reuse water pool is connected to the dosing room outside the cave through a dosing pipeline. After adding chemicals, it can be used as construction water for recycling or discharged through a sewage pipe; (The dosing pipeline is set at the bottom of the reuse water pool, the purpose is to enable the chemicals to fully react with the wastewater); outside the cave, a sewage collection ditch is set along the slope direction of the auxiliary pit (cross slope) from the vortex sedimentation cavern to the sludge concentration cavern, and a sewage collection ditch is set on the back reverse slope to the filter press cavern; the vortex sedimentation cavern, the filter cavern, the sludge concentration cavern and the filter press cavern are all equipped with ditches to collect the scattered water generated in the cavern during operation; the sewage ditches of each cavern are merged from the sewage collection ditch to the return pump well.

[0043] like Figure 8 As shown, a sludge tank, a screw pump and a plate-frame filter press are arranged in the filter press cave, the sludge concentration tank is connected to the sludge tank through a pipeline, and the sludge tank is connected to the screw pump and the plate-frame filter press in sequence;

[0044] The filtered sewage flows from the filter chamber to the reuse water pool in the sludge thickening chamber, and is reused for dissolving reagents, nearby mixing stations, tunnel construction, dust prevention and sprinkling, etc. The remaining part exceeding the reuse amount is discharged as overflow; the sewage containing large particles in the sludge thickening tank is pressurized and flows to the sludge tank in the filter press chamber; after being treated with the sludge tank, spiral pump and other reagents in the filter press chamber, it flows to the plate and frame filter press, and is processed after being made into mud cake.

[0045] The sewage treatment method of the utility model comprises the following steps:

[0046] Step 1: Construction sewage flows from the sewage collection ditch into the grit chamber ditch by falling, and then flows into the No. 1 grit chamber of the grit chamber by gravity flow. After initial sedimentation, it overflows and flows through the reverse ditch of the grit chamber to the sewage collection ditch by gravity flow, and then flows to the No. 2 grit chamber, No. 3 grit chamber and No. 4 grit chamber of the grit chamber in sequence by gravity flow; the effect of removing sand and large inorganic particles is achieved, and the effluent SS concentration can generally be reduced to below 900 mg / L;

[0047] Step 2: The sewage after preliminary sedimentation flows by gravity from the sewage collection ditch through the cavern ditch into the grid well; large particles, impurities and other solid substances in the sewage are intercepted by the grid well and flow to the No. 1 sewage pump well. After testing, the sewage that meets the discharge requirements can be directly discharged through the pipeline, and the sewage that does not meet the requirements is pressurized by the water pump through the pipeline and sent to the cyclone sand settling device to further remove large inorganic particles;

[0048] Step 3: The sewage after preliminary treatment flows from the cyclone sand settling device to the regulating sedimentation cavern 3 by gravity through the pipeline. The sewage flows by gravity through the mud hopper and the regulating sedimentation tank in turn, and the reagent is added to the regulating sedimentation tank. The large particles are precipitated in the mud hopper due to their own gravity and the reaction of the traveling scraper with the reagent. The sewage containing smaller particles flows to the No. 2 sewage pump well. The sewage with precipitated mud in the mud hopper is discharged to the sludge concentration tank in the sludge concentration cavern 6 through the sludge pipeline;

[0049] Step 4: The No. 2 sewage pump well pressurizes the precipitated sewage to the vortex sedimentation chamber 4 through the pipeline, and a tubular static mixer is provided at the entrance of the vortex sand settling device. The reagents in the dosing room are connected to the tubular static mixer through the pipeline, and the sewage and the reagents are mixed and then flow into the vortex sedimentation device for further treatment;

[0050] Step 5: The sewage treated by the vortex settler flows through the pipeline to the filtering chamber 5; the sludge is discharged to the sludge concentration tank in the sludge concentration chamber 6 through the sludge pipeline;

[0051] Step 6: The filtered sewage flows from the filter chamber to the reuse water pool in the sludge concentration chamber. At this time, the purification requirements have been met. Part of the water is used as construction water for construction, and part of the water is led to the dosing room for recycling. The large-particle sewage in the sludge concentration tank is pressurized and flows to the sludge tank in the filter press chamber 7.

[0052] Step 7: After the sewage in the filter press chamber 7 is treated by the sludge tank, the screw pump and the reagent, it flows to the plate and frame filter press and is processed after being made into mud cake.

[0053] The construction method of the utility model is as follows:

[0054] Step 1: According to the hydrogeological data of the tunnel, determine the sewage discharge of the entire tunnel and the number, size and sewage treatment capacity of the sewage cavern group, and thus determine the power of each sewage treatment cavern equipment;

[0055] Step 2: Select the better section of surrounding rock (in this case, Grade III surrounding rock) in the cross tunnel of the auxiliary tunnel as the scope of the sewage cavern structure group, and excavate the sand settling caverns in sequence according to the determined size of the sewage cavern group. Taking into account the depth of the sedimentation tank, the span of the sand settling cavern should meet the working range requirements of using machinery to excavate the sedimentation tank. Carry out initial support for the cavern, where the arch is supported by low prestressed expansion shell type hollow grouting anchor rods, and the side walls and end walls are supported by cement drug roll anchor rods, and then high-performance concrete is sprayed to reinforce the stratum to form a support system. The cavern is equipped with 16-type steel frames, and the spacing between the steel frames is 1 frame / 1m to ensure the stability of the cavern; excavate the sand settling tanks in sequence, and install cement drug roll anchor rods on the pool walls; the slope of the ditch in the cavern is ±3‰, and the spacing between each cavern is considered to be 1.5 times the width of the cavern;

[0056] Step 3: Excavate the cyclone sand settling cavern and carry out the initial support of the cavern. The arch is supported by low prestressed hollow grouting anchor bolts, and the side walls and end walls are supported by cement drug roll anchor bolts. High-performance concrete is then sprayed to reinforce the stratum and form a support system. A steel frame is set at the entrance to ensure the stability of the cavern. The cyclone sand settling cavern is mainly used to place the cyclone sand settling device, and the No. 1 sewage pump well and the grille well are used in conjunction with the cyclone sand settling device. This cavern adopts EVA waterproof board + non-woven fabric to carry out drainage design for the cavern to ensure the normal operation of the cyclone sand settling device.

[0057] Step 4: Excavate the regulating sedimentation cavern, carry out the initial support of the cavern, and drive anchors from the initial support to the surrounding rock to reinforce the stratum and form a support system. Set up 16-type steel frames at the entrance of the cavern. The spacing between the steel frames is 1 frame / 1m, and there are 5 frames in total to ensure the stability of the cavern; add drug-coiled anchors to the sewage pump well for support. The regulating sedimentation cavern is mainly composed of a return well, a mud bucket, a regulating sedimentation tank and No. 2 sewage pump well. The bottom of the regulating sedimentation tank adopts a 1% slope. The sewage has a certain flow rate after flowing out of the cyclone sand settling device. When passing through the regulating sedimentation tank, the large particles in the sewage will sink to the bottom of the regulating sedimentation tank under the action of its own gravity and flow into the mud bucket through the slope; the sewage containing fine particles will flow into the No. 2 sewage pump well; a ditch is set on the ground inside the regulating sedimentation cavern to connect to the No. 2 sewage pump well. The slope of the bottom of the ditch is 3%, and the ditch cover uses a steel grate to collect scattered water in the cavern;

[0058] Step 5: Excavate the vortex sedimentation cavern and carry out initial support for the cavern. The arch is supported by low prestressed expansion shell type hollow grouting anchor rods, and the side walls and end walls are supported by cement drug roll anchor rods. High-performance concrete is then sprayed to reinforce the stratum to form a support system. 16-type steel frames are set at the entrance of the cavern. The spacing between the steel frames is 1 frame / 1m, and a total of 5 frames are set to ensure the stability of the cavern. The main equipment of the cavern is a cyclone settler, which needs to be assembled vertically. To ensure safety, a 17° slope is considered for excavation within 7m from the center line of the horizontal tunnel during the excavation of the cyclone sedimentation cavern. The low prestressed expansion shell type hollow grouting anchor rods can be appropriately increased in the slope excavation section.

[0059] Step 6: Excavate the filter cavern and carry out initial support for the cavern. The arch is supported by low prestressed hollow grouting anchor bolts, and the side walls and end walls are supported by cement drug roll anchor bolts. High-performance concrete is then sprayed to reinforce the stratum and form a support system. A 16-type steel frame is set at the entrance of the cavern. The spacing between the steel frames is 1 frame / 1m, and a total of 5 frames are set to ensure the stability of the cavern. The sewage treated by the vortex precipitator flows from the pipeline to the filter cavern. The filter cavern is equipped with a valveless filter, the main purpose of which is to remove suspended matter in the sewage, filter, and the SS concentration of the effluent is less than or equal to 20mg / L;

[0060] Step seven: excavate the sludge concentration cavern and carry out initial support for the cavern, where the arch is supported by low prestressed expansion shell hollow grouting anchor rods, and the side walls and end walls are supported by cement drug roll anchor rods. High-performance concrete is then sprayed to reinforce the stratum and form a support system. A steel frame is set at the cave entrance. A 16-type steel frame is set at the cave entrance. The spacing between the steel frames is 1 frame / 1m, and there are 5 frames in total to ensure the stability of the cavern; drug roll anchor rods are added to the return water pool, return pump well, and sludge concentration tank for support. The reused water pool is reused for dissolving agents, nearby mixing plants, tunnel construction, dust prevention and spraying, etc. The remaining part exceeding the reuse amount is overflowed and discharged; if there is large-particle sewage in the sludge concentration tank, it is pressurized and flows to the sludge tank in the filter press cavern;

[0061] Step 8: Excavate the filter press cavern.

[0062] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The content of the utility model is not limited to the embodiments listed, and any equivalent changes made to the technical solution of the utility model by ordinary technicians in this field after reading the specification of the utility model are covered by the claims of the utility model.

Claims

1. A chamber group structure of a sewage station in a long tunnel, characterized by: The cavern group structure is arranged in the auxiliary tunnel; It comprises a sand settling chamber (1), a cyclone sand settling chamber (2), a regulating sedimentation chamber (3), a vortex sedimentation chamber (4), a filtering chamber (5), a sludge concentration chamber (6) and a filter press chamber (7); A sewage collection ditch is arranged longitudinally along the auxiliary tunnel at the starting and ending positions of the sand settling chamber, near the side of the chamber, and ends at the cyclone sand settling chamber; the sewage flowing out of the sand settling chamber flows into the cyclone sand settling chamber through the sewage collection ditch by gravity flow; The cyclone sedimentation chamber is connected to the regulating sedimentation chamber via a gravity pipe, and the regulating sedimentation chamber is connected to the vortex sedimentation chamber via a pressurized pipe; the vortex sedimentation chamber is connected to the filtering chamber via a pipe, and the vortex sedimentation chamber is connected to the sludge concentration chamber via a pressurized pipe; The filtering chamber is connected to the sludge concentration chamber, and the sludge concentration chamber is connected to the filter press chamber.

2. The chamber group structure of a sewage station in a long tunnel according to claim 1 is characterized by: The grit chamber (1) comprises a grit chamber, and a water ditch and a reverse water ditch are respectively arranged on both sides of the grit chamber. The reverse water ditch is connected to the sewage collection ditch. DN200 cast iron gates are arranged on the sewage collection ditch at the sewage inflow and outflow of the grit chamber to control the flow rate.

3. The chamber group structure of a sewage station in a long tunnel according to claim 1 is characterized by: The cyclone sand settling cavern (2) is provided with a 3‰ cavern water ditch, the cavern water ditch is connected to the sewage collection ditch and the grid well, the grid well is connected to the No. 1 sewage pump well, and the No. 1 sewage pump well is connected to the cyclone sand settling device.

4. The chamber group structure of a sewage station in a long tunnel according to claim 3 is characterized by: A mud hopper, a regulating sedimentation tank, a traveling mud scraper and a No. 2 sewage pump well are sequentially arranged in the regulating sedimentation cavern (3); the mud hopper is connected to a cyclone sand settling device.

5. The chamber group structure of a sewage station in a long tunnel according to claim 4 is characterized by: The vortex sedimentation chamber (4) is provided with a vortex sedimentator for treating the sewage from the No. 2 sewage pump well.

6. The chamber group structure of a sewage station in a long tunnel according to claim 5 is characterized in that: A valveless filter is arranged in the filtering chamber (5).

7. The chamber group structure of a sewage station in a long tunnel according to claim 6 is characterized by: The sludge concentration cave (6) is provided with a recycling water pool, a sludge concentration pool and a pressure pump well.

8. The chamber group structure of a sewage station in a long tunnel according to claim 7 is characterized by: The filter press chamber (7) is provided with a sludge tank, a screw pump and a plate and frame filter press.

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