Concrete inspection well construction method process requirements 30

1.Asphalt concrete is laid on a cement concrete pavement, inspection wells are installed. Generally, the original road surface is broken first, and the shaft of the inspection shaft is raised.

After the asphalt concrete pavement is formed, the pavement around the inspection well is cut into a hexagonal shape, and the remaining material is chiseled. After the inspection well is installed, asphalt concrete is laid inside the hexagon. 2.

Asphalt concrete was added to the old asphalt pavement, inspection wells were installed. Under normal circumstances, excavate the original road surface, raise the inspection well body or reserve space at the original inspection well position. After the asphalt concrete pavement is formed, the road surface around the inspection well is cut into a hexagonal shape, and the remaining material is chiseled or the inspection well is installed in the reserved hexagon or circle, and then the asphalt concrete is paved in the hexagon or circle.

3.Asphalt concrete was laid on the newly built roadbed, inspection wells were installed. Generally, the method of temporary installation of inspection wells is adopted.

After the entire asphalt concrete pavement is completed, the manhole is cut into a hexagonal shape around the manhole, or the manhole is installed after removing excess material in a circular space reserved in advance. After adopting the above-mentioned method to install the manhole, because the foundation treatment around the manhole body Bixiangyou is a weak link, and the asphalt pavement around the manhole body is laid twice, the rolling effect is often poor, and the asphalt pavement around the manhole body is easy to sink for a long time, and the "navel eye" of depression is formed, and the smooth and beautiful surface surface is affected, especially the ride comfort. In addition, when mechanical paving is used, the temporary installation of manholes can affect paving and rolling operations.

Concrete modular manhole is an underground facility commonly used in water supply, drainage, electricity, communication and other fields. The following is a detailed description of the construction process of the concrete modular inspection well:

Design and preparation stage: determine the location and specifications of the inspection well, and design the drawings according to the design requirements.

Prepare the materials and equipment required for construction, including concrete, rebar, formwork, construction tools, etc.

Ground preparation: Delineate and clear out appropriate work areas at the construction site.

According to the design requirements, the location and contour of the inspection well are marked on the ground.

Template making and installation: Make the template according to the design drawings to ensure that the size and shape of the template meet the requirements.

Install the formwork on the ground according to the marked position to ensure the stability and verticality of the formwork.

Reinforcement arrangement: According to the design requirements, the prefabricated reinforcement is placed inside the template according to the layout drawing.

Ensure that the spacing, covering, and connection of rebar comply with relevant standards and codes.

Pouring concrete: After the reinforcement arrangement is completed, the pouring of concrete begins.

Vibrating machinery or manual means are used to ensure that the concrete is filled and closed and the air bubbles are removed.

According to the design requirements, the thickness and uniformity of the concrete are controlled.

Curing and demoulding: After the concrete car is poured virtually, appropriate maintenance is carried out. In general, the return stool needs to be kept moist and protected from direct sunlight to promote the strength and hardening of the concrete.

According to the initial setting time of the concrete, the demoulding time should be reasonably arranged, and the formwork should be carefully removed.

Installation of supporting components of inspection wells: According to the design requirements, supporting components are installed inside the inspection wells, such as manhole covers, inlet and outlet pipelines, waterproof materials, etc.

Ensure that the supporting components are closely connected with the inspection well, and meet the requirements of the construction drawings.

Anti-leakage treatment: For anti-leakage treatment of the inspection well, waterproof coatings, waterproof tapes and other materials can be used to ensure that the inspection well does not leak during use.

Carry out necessary trimming work, such as cleaning up debris in the well, repairing surface defects, etc.

The above is the general construction process of concrete modular inspection well. The specific implementation method may vary according to different projects and design requirements, so the design documents should be detailed and the relevant codes and standards should be followed before the actual construction.

Inspection wells are installed in the pipeline.

1. The installation sequence of the connection between the well seat and the pipeline should be installed from the upstream section of the household pipe, and the installation should be carried out in the order of well-pipe-well-pipe, and the disease should gradually extend to the downstream branch pipe and the main pipe.

2. The construction method of connecting the well seat joint and the pipeline should be consistent with the construction method of the pipeline connection of the same type of joint.

3. The connection between the well seat and the sink pipe and the discharge pipe needs to be reduced, and when the reducing joint is used, when the diameter of the sink pipe is less than the diameter of the well seat interface, the top of the pipe should be connected flat; When the interface of the discharge pipe of the well seat is larger than the downstream pipeline, the inner bottom of the pipe should be flattened.

4. When the slope of the pipeline is adjusted by variable angle joints or ball joints, when the diameter of the pipe is 315mm, special tools should be used and chain wrenches should not be used.

5. The installation of additional joints should be based on the size of the wellbore and the diameter of the connecting pipeline, and special tools should be used to open holes in the well wall, and the circumferential edge of the hole should be flat, and the installation of additional joints should not be reversed.

The pit should be excavated at the same time as the pipe trench, and the main line of the well seat should be on the same axis as the pipeline in the pipe trench during excavation. The pit slope is consistent with the pipe ditch slope. When the pit is excavated, the base soil shall not be disturbed and over-excavated; If the base soil is disturbed, remedial measures should be taken according to the relevant provisions of the current "Code for Construction and Acceptance of Water Supply and Drainage Pipeline Engineering" GB 50268.

If there is a sedimentation chamber rainwater inspection well pit, the depth of the sedimentation chamber should be excavated locally according to the selected specifications. The excavation of the pit should be based on the selected specifications, considering the bias factor of the main line of the well seat, and the pit wall at the offset end should be flush with the pipe trench.

A product specification of a circular concrete inspection well.

1.Concrete well chamber floor

Concrete well chamber *1530, (inner diameter * height) e69da5e6ba9062616964757a686964616f31333332636435

3.Concrete closing cover *7004

Wellbore adjustment block *470 (inner diameter * height).

5.Concrete well ring: 700*260 (inner diameter * height).

2. Product specifications of rectangular inspection wells.

Concrete well chamber *2500*2850;

12S522 "Concrete Modular BAI Drainage Inspection Well" is suitable for municipal, industrial and civil buildings, outdoor DAO without internal pressure of circular drainage pipe channel. The rainwater belongs to the pipe diameter d 200 2000mm, the sewage pipe diameter d = 200 1500mm, and the design covering thickness above the inspection manhole cover plate is between. The seismic fortification intensity of the structure is not more than 8 degrees (.

The rectangular well is designed according to the presence of groundwater and the absence of groundwater, and the rest are designed according to the presence of groundwater.

The main contents include: 700 1500mm circular, straight line and 90 ° rectangular concrete modular drainage inspection well selection and construction details; 900 1500mm circular mud well selection and construction details; Rectangular and semicircular vertical groove concrete modular water fall well selection and construction details.

Now it's all made of plastic manholes!

I don't know what the difference between you are referring to bai?

1. The first material is different. Brickwork zhi

Rainwater inspection wells are mainly made of clay bricks or shale bricks. Concrete rainwater inspection wells are generally divided into reinforced concrete inspection wells and precast concrete modules.

2. The cost is different. Brick rainwater inspection wells are the cheapest; Precast concrete modules are more expensive; Reinforced concrete inspection wells are the most expensive.

3. I think you may be asking about the use, the brick inspection well is covered with soil less than 4 meters in accordance with the requirements of the national standard, and the pipe diameter is less than d2200mm. The same is true for precast concrete modules. The special forms of inspection wells such as large pipe diameter, large buried depth and double row should be considered to use reinforced concrete.

Not sure if these are what you want to know.

The walls of the well are the walls of the well chamber, which are square, round, and heterosexual. The wellbore generally refers to the part above the manhole cover plate to the surface.

Concrete inspection well structure: there is no difference between the wall and the wellbore.

Dear, we are glad to answer the requirements for the installation location of cement inspection wells as follows: Cement inspection wells: shafts built at certain intervals at the location of underground pipelines.

It is mainly used for overhauling pipelines, removing sludge and connecting pipelines in different directions and at different heights. Specifically, there are flushing inspection wells, street inspection wells, water distribution inspection wells, sewage inspection wells and other cement inspection wells in the drainage system and the location of the setting: drainage inspection and is the main structure of the outdoor drainage system, it mainly plays the role of connecting, cleaning and inspecting the pipeline, and also has the special role of changing the direction of water flow (elbow), confluence (tee) and diameter.

Check and set the location: (1) At the place where the pipeline changes direction, the confluence of the pipeline, the diameter change and the slope. (2) Every 40-50m on the straight pipe section.

3) Material changes. (4) Where the drainage drop is large, the inspection well is also called the water fall well before the acceptance, and the water drop can eliminate and reduce the impact of excessive flow rate in the pipe caused by the excessive fall head.