CN207268009U - A drainage system of underground comprehensive pipe gallery based on the existing sewage channel - Google Patents

Abstract

The utility model belongs to municipal drainage technical field, is related to a kind of underground pipe gallery drainage system based on existing blowdown canal.Downflow weir is set on the basis of existing blowdown canal, when rainfall is more than the design discharge of existing blowdown canal, rainwater enters underground pipe gallery by downflow weir, so as to fulfill the dirty shunting of rain and the probability of happening of reduction urban waterlogging.Underground pipe gallery is made of cast-in-place basic, cast-in-place road surface and prefabricated side wall, prefabricated dome, and inside can be laid with the urban operating mechanism pipeline such as electric power, communication, combustion gas, water supply and sewage, easy to be managed collectively, repair.A kind of underground pipe gallery drainage system based on existing blowdown canal provides technical support for the construction in sponge city, and city surface source pollution is improved, and has in reconstruction of the old city town and greatly plays space.

Description

A drainage system of underground comprehensive pipe gallery based on the existing sewage channel

technical field

The utility model relates to an urban underground comprehensive pipe gallery drainage system, which belongs to the technical field of urban drainage, in particular to an underground comprehensive pipe gallery drainage system based on the existing sewage canal.

Background technique

In the process of China's rapid urbanization, the urban area is getting bigger and bigger. Urban drainage systems built decades ago have outgrown their original design capacity. Urban waterlogging in rainstorm-prone areas in southern my country needs to be solved urgently. And along with the economic take-off, urban pollution is becoming more and more serious. The development of vehicles and industry has led to more and more serious urban non-point source pollution. However, the transformation of the drainage system in the old city will have a great impact on urban road traffic, and the traditional extensive working method will produce a large amount of dust and pollute the air.

Contents of the invention

The purpose of this utility model is to provide an underground comprehensive pipe gallery drainage system based on the existing sewage canal in view of the problems existing in the above-mentioned background technology. The utility model does not need to dismantle the existing sewage drain, but fully utilizes the existing drainage capacity, reduces the workload, and avoids waste of resources.

In order to solve the above problems and realize the above requirements, the utility model adopts the following technical solutions.

An underground comprehensive pipe gallery drainage system based on the existing sewage canal, characterized in that: a rainwater overflow weir is set on the existing sewage canal to guide the rainwater into the underground comprehensive pipe gallery through the overflow port, and the underground comprehensive pipe gallery is composed of cast-in-place underground pipes Gallery foundation, cast-in-place underground collecting channel, cast-in-place underground pipe gallery pavement, prefabricated pipe gallery side wall and prefabricated underground pipe gallery dome, and the first side wall grouting hole and the second side wall are set on the prefabricated pipe gallery side wall The grouting hole, the first side wall grouting hole and the second side wall grouting hole are used for the grouting connection between the side wall of the prefabricated pipe gallery and the soil, and the cast-in-place connection joint is used to connect the side wall of the prefabricated pipe gallery and the cast-in-situ underground comprehensive pipe gallery Part of the components, the prefabricated underground pipe gallery dome is assembled from the first prefabricated underground pipe gallery dome, the second prefabricated underground pipe gallery dome, and the third prefabricated underground pipe gallery dome. Dome grouting holes are set on the prefabricated underground pipe gallery dome. Corridors are provided with wire grooves and pipelines for laying municipal facilities pipelines.

A rainwater overflow weir is set at a certain distance on the upper part of the current sewage canal, as shown in the flow process schematic diagram in Figure 5. When the rainfall is greater than the design flow of the old canal, the rainwater enters the underground pipe gallery through the rainwater overflow weir.

The first side wall grouting hole and the second side wall grouting hole are arranged on the side wall of the prefabricated pipe gallery, and after the assembly is completed, the grouting is performed to fix the side wall of the prefabricated pipe gallery and play a waterproof role.

An overflow port is provided on the side wall of the part of the prefabricated pipe gallery to allow rainwater to flow into the underground pipe gallery.

The cast-in-place underground pipe gallery foundation is located under the side wall of the prefabricated pipe gallery, and is used to bear the self-weight and upper earth pressure of the prefabricated component prefabricated pipe gallery side wall of the underground pipe gallery and the prefabricated underground pipe gallery dome.

The cast-in-situ underground collecting channel is located on the side where the overflow outlet is located.

The road surface of the cast-in-place underground pipe gallery is set with a slope of 2% towards the direction of the cast-in-place underground collecting channel.

The cast-in-place connecting joint is used to connect and fix the cast-in-place components of the underground pipe gallery and the side walls of the prefabricated pipe gallery.

The prefabricated underground pipe gallery dome is assembled from three prefabricated components: the first prefabricated underground pipe gallery dome, the second prefabricated underground pipe gallery dome, and the third prefabricated underground pipe gallery dome. Dome grouting holes are set on the prefabricated underground pipe gallery dome , grouting after the assembly is completed, fix the dome of the prefabricated underground pipe gallery and play the role of waterproofing.

According to observations, the concentration of pollutants in the early stage of heavy rain (20 minutes before the rain) generally exceeds the concentration of sewage in normal times. Urban non-point sources are the main pollution sources that cause water pollution, with the characteristics of high flow, sudden and heavy pollution. As shown in Figure 5, the flow process schematic diagram in Figure 5 shows that the rainwater with a relatively high flow rate at the initial stage of the storm enters the existing sewage channel 1 and scours its surface to remove pollutants; when the rainfall reaches the design flow rate of the old channel, the cleaner rainwater is released The rainwater is guided by the overflow weir and enters the underground comprehensive pipe gallery through the overflow port, realizing the diversion of rainwater and sewage, so as to facilitate the treatment and utilization of rainwater in the later stage, and reduce the probability of urban waterlogging.

The cast-in-place underground pipe gallery foundation, cast-in-place underground collecting channel, and cast-in-place underground pipe gallery pavement of the underground comprehensive pipe gallery are all formed by on-site formwork and poured, which has the advantages of good integrity and waterproof.

After the side wall of the prefabricated pipe gallery of the underground comprehensive pipe gallery is installed in place, grout through the first side wall grouting hole and the second side wall grouting hole, so that the side wall of the prefabricated pipe gallery and the soil form a tight bond, improve the integrity of the structure, and prevent groundwater Occurs such as infiltration. The side walls of the prefabricated pipe gallery are connected to the cast-in-place components of the underground comprehensive pipe gallery through the cast-in-place connection joints.

The prefabricated underground pipe gallery dome of the underground comprehensive pipe gallery is assembled from three prefabricated components: the first prefabricated underground pipe gallery dome, the second prefabricated underground pipe gallery dome, and the third prefabricated underground pipe gallery dome, which are then grouted through the dome grouting holes. Make the prefabricated underground pipe gallery dome a whole.

The utility model has the following advantages: (1) Part of the components are prefabricated by the factory, and the quality of the components is guaranteed, which saves the cumbersome formwork support, maintenance, and disassembly procedures at the construction site, reduces construction pollution, and is high-quality, time-saving, efficient, and Environmental protection and other advantages. (2) The current sewage canals will be fully utilized to reduce production costs, relieve environmental pressure, protect the ecological environment, and achieve green development and production. (3) The drainage system realizes the diversion of rainwater and sewage, improves urban non-point source pollution, and has great potential in the reconstruction of old cities.

Description of drawings

Figure 1 is an overall schematic diagram of an underground comprehensive pipe gallery drainage system based on the existing sewage channel.

Figure 2 is a schematic diagram of the construction of an underground integrated pipe gallery drainage system based on the existing sewage channel.

Fig. 3 is an overall schematic diagram of the side wall of the prefabricated pipe gallery.

Figure 4 is an overall schematic diagram of the dome of the prefabricated underground pipe gallery.

Fig. 5 is a schematic diagram of the flow process.

Detailed ways

In order to make the content of the utility model more understandable, a further description will be made in conjunction with the accompanying drawings and specific implementation methods.

The aforementioned and other technical contents, features and effects of the present utility model can be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of the specific implementation, a more in-depth and specific understanding of the technical means and effects adopted by the utility model to achieve the intended purpose can be obtained. limit.

Referring to Fig. 1, the utility model is an underground comprehensive pipe gallery drainage system based on the existing sewage canal, which is used to transform the urban drainage system and works together with the existing sewage canal 1. The side wall 3 of the prefabricated pipe gallery and the dome 7 of the prefabricated underground pipe gallery are prefabricated, produced and maintained in the factory according to the design size, and transported to the construction site after reaching a certain strength. Drill holes at appropriate positions of the existing sewage channel 1, and install the rainwater overflow weir 2. Treat the foundation, compact it, support the formwork, pour the cast-in-place underground pipe gallery foundation 4, the cast-in-place underground collecting channel 5 and the cast-in-place underground pipe gallery pavement 6, and after the concrete has a certain strength, install the prefabricated pipe gallery side wall 3. After the side wall 3 of the prefabricated pipe gallery is in place, temporary support is applied to fix it, and grouting is performed from the first side wall grouting hole 121 and the second side wall grouting hole 122, so that the prefabricated pipe gallery side wall 3 and the soil form a tight bond and improve the structural stability. Integrity, to prevent groundwater infiltration and other phenomena. The side walls 3 of the prefabricated pipe gallery are connected to the cast-in-place components of the underground comprehensive pipe gallery through the cast-in-place joints 11 . The first prefabricated underground pipe gallery dome 71, the second prefabricated underground pipe gallery dome 72, and the third prefabricated underground pipe gallery dome 73 are assembled in place, and temporary supports are set up, and the grouting holes 13 on the side walls of the dome are grouted to form the prefabricated underground pipe gallery dome 7 As a whole, it forms a tight bond with the soil, improves the integrity of the structure, and prevents groundwater from infiltrating and other phenomena.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and embellishments can also be made, these improvements and Polishing should also be regarded as the protection scope of the present utility model.

Claims (6)

1. A kind of 1. underground pipe gallery drainage system based on existing blowdown canal, it is characterised in that：In existing blowdown canal（1）On set Put stormwater overflow weir（2）, guide rainwater to pass through overflow port（10）Into underground pipe gallery, underground pipe gallery is by cast-in-place underground Piping lane basis（4）, cast-in-place ground lower header canal（5）, cast-in-place underground pipe gallery road surface（6）, prefabricated piping lane side wall（3）With prefabricated buried pipe Corridor dome（7）It is composed, prefabricated piping lane side wall（3）Upper setting the first side wall grout hole（121）With second sidewall grout hole （122）, the first side wall grout hole（121）With second sidewall grout hole（122）For prefabricated piping lane side wall（3）Between soil Grouting connection, cast-in-place connecting sewing（11）For connecting prefabricated piping lane side wall（3）It is prefabricated with the cast-in-place partial component of underground pipe gallery Underground pipe gallery dome（7）By the first prefabricated underground pipe gallery dome（71）, the second prefabricated underground pipe gallery dome（72), the 3rd prefabricatedly Lower piping lane dome（73）It is assembled, prefabricated underground pipe gallery dome（7）Upper setting dome grout hole（13）, in underground pipe gallery If wire casing（8）, pipeline（9）To be laid with urban operating mechanism pipeline.
2. A kind of 2. underground pipe gallery drainage system based on existing blowdown canal according to claim 1, it is characterised in that： The existing blowdown canal（1）Top sets one of stormwater overflow weir at a certain distance（2）, when rainfall is more than old canal design discharge When, rainwater passes through stormwater overflow weir（2）Into underground pipe gallery.
3. A kind of 3. underground pipe gallery drainage system based on existing blowdown canal according to claim 1, it is characterised in that： The partial precast piping lane side wall（3）Upper setting overflow port（10）, rainwater is flowed into underground pipe gallery.
4. A kind of 4. underground pipe gallery drainage system based on existing blowdown canal according to claim 1, it is characterised in that： The cast-in-place underground pipe gallery basis（4）Positioned at prefabricated piping lane side wall（3）Under, for bearing the prefabricated components prefabricated pipe of underground pipe gallery Corridor side wall（3）With prefabricated underground pipe gallery dome（7）Dead weight and top soil pressure.
5. A kind of 5. underground pipe gallery drainage system based on existing blowdown canal according to claim 1, it is characterised in that： The cast-in-place ground lower header canal（5）Positioned at overflow port（10）Place side.
6. A kind of 6. underground pipe gallery drainage system based on existing blowdown canal according to claim 1, it is characterised in that： The cast-in-place underground pipe gallery road surface（6）2% is set to cast-in-place ground lower header canal（5）The gradient in direction.