CN207111174U - A kind of built-in pump room structure of shield tunnel - Google Patents

Abstract

The utility model discloses a shield tunnel built-in pump room structure, which is characterized in that it includes a sump, concrete segments, steel tube segments, track beds, cover plates, cross braces, at least one water pump, drainage ditches and sedimentation tanks, The sump is located in the ballast bed, the sump pump is located in the sump, the steel pipe sheet is set at the bottom of the sump and at the position of the sump pump, the concrete segment is set at the rest of the bottom of the sump, and the cross brace is supported on the top of the sump , the cover plate is placed on the cross brace, the drainage ditch is located on both sides of the top surface of the ballast bed, the sedimentation tank is set in the ballast bed and located at both ends of the drainage ditch, the drainage ditch is connected to the sedimentation tank, and the sedimentation tank is connected to the sump tunnel The waste water inside flows through the drainage ditch through the sedimentation tank into the sump and is finally discharged through the pump. The advantages are simple and safe construction, low construction cost and fast construction.

Description

A shield tunnel built-in pump room structure

technical field

The utility model relates to a shield tunnel pump room structure, in particular to a shield tunnel built-in pump room structure, which belongs to the field of underground engineering.

Background technique

With the acceleration of urbanization, the utilization of underground space has become a hot spot, among which the excavation by shield method has been widely used because of its advantages of not affecting ground traffic and having little impact on the environment. Based on drainage requirements, the shield tunnel is equipped with a drainage pump room, which is generally located at the lower part of the communication channel between the two tunnels. Due to the setting of the drainage pump room, it is extremely difficult to excavate the communication channel by mechanical methods, and generally only reinforcement can be used. The post-mine excavation method is not only expensive, but also has a great impact on the surrounding environment and a long construction period.

Contents of the invention

The technical problem to be solved by the utility model is to provide a shield tunnel built-in pump room structure with simple and safe construction, low construction cost and fast construction.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a shield tunnel built-in pump house structure, which is characterized in that it includes a sump, a concrete segment, a steel tube segment, a ballast bed, a cover plate, a cross brace, at least A water pump, a drainage ditch and a sedimentation tank, the sump is located in the ballast bed, the water pump is located in the sump, and the steel pipe sheet is arranged in the sump The bottom is located at the position of the sump pump, the concrete segment is arranged at the rest of the bottom of the sump, the cross brace is supported on the top of the sump, and the cover plate placed on the cross brace, the drainage ditches are respectively located on both sides of the top surface of the ballast bed, the sedimentation tank is arranged in the ballast bed and respectively located at both ends of the drainage ditch, The drainage ditch is in communication with the sedimentation tank, and the sedimentation tank is in communication with the sump. The wastewater in the tunnel flows through the sedimentation tank through the drainage ditch into the sump and is finally discharged through the pump.

The ballast bed is provided with several short sleepers, and the short sleepers are arranged in sequence along the length direction of the sump, and the ballast bed is provided with long sleepers at both ends of the sump.

A groove is provided on the steel pipe sheet at the middle position, the water pump is located in the groove, and a type of filling material is filled in the steel pipe sheet. A steel pipe with grooves is installed at the position where the water pump is placed, which provides space for the installation of the water pump on the premise of ensuring the overall rigidity and strength of the tunnel structure.

A water pump outlet hole is provided on the cover plate directly above the steel pipe sheet. The hole size is determined by the size of the pump outlet pipe.

The interface between the sump and the bottom corner of the ballast bed is provided with a waterproof gasket, the bottom surface of the groove is provided with a second-class waterproof protective layer, and the top surface of the second-class waterproof protective layer, the A type of waterproof coating is provided on the side of the groove, the top surface of the concrete segment and the side of the sump. A double-channel waterproof system is installed in the concrete pipe section, and a three-channel waterproof system is installed in the steel pipe section, so as to prevent the waste water from entering the track bed from the drainage ditch and affecting the structural safety.

The waterproof gasket is polysulfide sealant or water-swellable water-stop strip; the first-class waterproof coating is waterproof mortar; the second-class waterproof protective layer is C35 waterproof concrete; the cover plate is Lightweight and high-strength composite material, the above-mentioned one kind of filling material is micro-expansion concrete.

Compared with the prior art, the utility model has the advantages that: the utility model is a shield tunnel built-in pump room structure, the waste water in the tunnel flows through the drainage ditch, passes through the sedimentation tank, enters the sump, and finally is discharged through the pump. It can avoid the design of the drainage pump room at the position of the communication channel, greatly reduce the impact of the construction of the drainage pump room on the environment, and provide a foundation for the mechanized excavation of the communication channel. At the same time, the construction of the built-in pump room itself is simple and safe, with low construction cost and fast construction . The non-excavation construction of the shield tunnel drainage pump room has been realized, which has greatly improved the construction safety and efficiency and reduced the construction cost.

Description of drawings

Fig. 1 is the schematic diagram of the longitudinal section of the shield tunnel built-in pump room structure of the present utility model;

Fig. 2 is a schematic top view of the shield tunnel built-in pump room structure of the present invention;

Fig. 3 is the A-A sectional schematic diagram of the shield tunnel built-in pump room structure of the present invention;

Fig. 4 is the B-B sectional schematic diagram of the shield tunnel built-in pump room structure of the present utility model;

Description of the labels of each part: 1- sump, 2- concrete segment, 3- steel pipe segment, 31- groove, 4- ballast bed, 5- cover plate, 51- pump outlet, 6- cross brace, 7- Suction pump, 8- drainage ditch, 9- sedimentation tank, 10- short sleeper, 11- long sleeper, 12- class I waterproof coating, 13- waterproof gasket, 14- class II waterproof protective layer, 15- class I Filler.

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

A shield tunnel built-in pump room structure, as shown in Figures 1 and 2, comprising a sump 1, concrete segments 2, steel tube segments 33, ballast bed 4, cover plates 5, cross braces 6, at least one pumping station The water pump 7, the drainage ditch 8 and the sedimentation tank 9, the sump 1 is located in the ballast bed 4, the water pump 7 is located in the sump 1, the steel pipe sheet 3 is arranged at the bottom of the sump 1 and is located at the position of the water pump 7, the concrete pipe The sheet 2 is set at the rest of the bottom of the sump 1, the cross brace 6 is supported on the top of the sump 1, the cover plate 5 is placed on the cross brace 6, the drainage ditch 8 is respectively located on both sides of the top surface of the ballast bed 4, and the sedimentation tank 9 It is arranged in the ballast bed 4 and is respectively located at both ends of the drainage ditch 8 , the drainage ditch 8 communicates with the sedimentation tank 9 , and the sedimentation tank 9 communicates with the sump 1 . The waste water in the tunnel flows through the drainage ditch 8 through the sedimentation tank 9 into the sump 1 and is finally discharged through the pump 7 .

In this specific embodiment, as shown in Figure 2, several short sleepers 10 are arranged on the ballast bed 4, and the short sleepers 10 are arranged in sequence along the length direction of the sump 1, and the two ends of the sump 1 are arranged on the ballast bed 4 There are 11 long sleepers. As shown in FIG. 3 and FIG. 4 , a groove 31 is provided on the steel pipe sheet 3 at the middle position, the water pump 7 is located in the groove 31 , and a type of filling material 15 is filled in the steel pipe sheet 3 . A water outlet hole of a water pump 7 is provided on the cover plate 5 and directly above the steel pipe sheet 3 . The bottom corner interface between the sump 1 and the ballast bed 4 is provided with a waterproof gasket 13, the bottom surface of the groove 31 is provided with a second-type waterproof protective layer 14, the top surface of the second-type waterproof protective layer 14, the side of the groove 31, the concrete A type of waterproof coating 12 is provided on the top surface of the segment 2 and the side surface of the sump 1 .

In this specific embodiment, the waterproof gasket 13 is polysulfide sealant or water-swellable water-stop strip; the first-class waterproof coating 12 is waterproof mortar; the second-class waterproof protective layer 14 is C35 waterproof concrete; the cover plate 5 is light Composite material with high quality and high strength, the first type of filling material 15 is micro-expansion concrete. Each built-in pump house is provided with two water pumps 7, two steel pipe sheets 3, and four sedimentation tanks 9.

The above description of the embodiments is for those of ordinary skill in the technical field to understand and apply the utility model. Therefore, the utility model is not limited to the embodiments here, and improvements and modifications made by those skilled in the art according to the disclosure of the utility model without departing from the scope of the utility model should be within the protection scope of the utility model.

Claims (6)

1. A shield tunnel built-in pump house structure is characterized in that: comprising sump, concrete segment, steel pipe sheet, ballast bed, cover plate, cross brace, at least one water pump, drainage ditch and sedimentation tank, the The sump is located in the ballast bed, the water pump is located in the sump, the steel pipe sheet is arranged at the bottom of the sump and at the position of the water pump, the The concrete segments described above are arranged at the rest of the bottom of the sump, the cross braces are supported on the top of the sump, the cover plates are placed on the cross braces, and the The drainage ditches are respectively located on both sides of the top surface of the ballast bed, and the sedimentation tanks are arranged in the ballast bed and respectively located at both ends of the drainage ditches, and the drainage ditches communicate with the sedimentation tanks , the sedimentation tank is in communication with the sump. 2. A shield tunnel built-in pump house structure according to claim 1, characterized in that: the ballast bed is provided with several short sleepers, and the short sleepers are arranged along the length direction of the sump Arranged in sequence, the two ends of the ballast bed and the sump are provided with long sleepers. 3. A shield tunnel built-in pump room structure according to claim 1, characterized in that: said steel pipe sheet is provided with a groove at the middle position, and said pump is located in said groove , the steel pipe sheet is filled with a type of filling material. 4 . The shield tunnel built-in pump house structure according to claim 3 , wherein a water pump outlet hole is provided on the cover plate directly above the steel pipe sheet. 5 . 5. A shield tunnel built-in pump room structure according to claim 3, characterized in that: the interface between the sump and the bottom corner of the ballast bed is provided with a waterproof gasket, and the concave The bottom surface of the groove is provided with a second-type waterproof protective layer, the top surface of the second-type waterproof protective layer, the side of the groove, the top surface of the concrete segment and the side of the sump. There is a type of waterproof coating provided. 6. A shield tunnel built-in pump room structure according to claim 5, characterized in that: the waterproof gasket is polysulfide sealant or water-swellable water-stop strip; The first layer is waterproof mortar; the second-class waterproof protection layer is C35 waterproof concrete; the cover plate is a lightweight high-strength composite material, and the first-class filling material is micro-expansion concrete.