Secondary forming water collecting well
By embedding steel bars into the sidewall of the water collection well to form a base for the well cover installation, the problems of uneven cover plates and inability to fully open the well during construction were solved, ensuring the stability of construction quality and functionality.
Patent Information
- Application Number
- CN202520307162.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-25
AI Technical Summary
Existing water collection wells are prone to problems during construction, such as unevenness around the cover plate and the inability to fully open the cover plate, which affect the construction quality and functionality.
Reinforcing bars are embedded in the side wall of the sump and poured into a C25 fine stone concrete layer to form a manhole cover installation base. The design of the pre-embedded sleeve and the manhole cover installation base ensures that the ground is level and the cover can be opened smoothly.
This effectively avoids problems such as unevenness between the cover plate and the ground, and the inability to fully open the cover plate, thus improving the construction quality and the reliability of its function.
Smart Images

Figure CN223867381U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a water collection well, and more particularly to a water collection well formed in a secondary manner. Background Technology
[0002] Construction projects such as residential and public buildings often involve sump pits in underground parking garages and basements. When a building is officially handed over, the sump pits must have normal drainage function, a cover that is level with the surrounding ground, and ease of maintenance. Additionally, some sump pits may be located in parking areas, therefore their load-bearing capacity must be fully considered.
[0003] As can be seen from the above, the secondary molding construction of water collection wells must simultaneously consider load-bearing capacity, the size of the water collection well cover, the building floor height, and the location of water pumps and sewage pipes. However, some existing projects have been found to have issues such as height differences around the cover and the cover not being able to be fully opened upon delivery. Therefore, it is necessary to improve the construction quality of secondary molding water collection wells to avoid defects in use after delivery. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a secondary-formed water collection well, which can effectively avoid problems such as unevenness between the cover plate and the ground and the inability of the cover plate to be fully opened, thus ensuring construction quality and subsequent use function.
[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is to provide a secondary-formed water collection well, including embedded steel bars set in the side wall of the water collection pit. The embedded steel bars are cast in a C25 fine stone concrete layer. The C25 fine stone concrete layer is cast around the side wall of the water collection pit to form a well cover installation base. A pre-embedded sleeve is arranged in the C25 fine stone concrete layer. The C25 fine stone concrete layer is flush with the building floor.
[0006] Furthermore, the two ends of the implanted reinforcing bar extend into the side wall of the sump, and the middle part of the implanted reinforcing bar forms a U-shaped ring cast in the C25 fine stone concrete layer.
[0007] Furthermore, the implantation depth of the implanted rebar is not less than 10d, where d is the diameter of the implanted rebar.
[0008] Furthermore, the implanted reinforcing bars are HRB400 reinforcing bars with a diameter of 10mm, arranged at a spacing of 150mm, and symmetrically implanted on both sides of the sidewall of the sump.
[0009] Furthermore, the manhole cover mounting base is rectangular in shape, and the height of the manhole cover mounting base is 200mm.
[0010] Furthermore, a protrusion is formed on the manhole cover mounting base.
[0011] Furthermore, the pre-embedded sleeve is located at the sewage riser.
[0012] Compared with the prior art, the present invention has the following advantages: The secondary-formed water collection well provided by the present invention takes into account the load-bearing capacity, the size of the water collection well cover plate, the height of the building floor, the position of the water pump and the sewage pipe, and avoids problems such as unevenness between the cover plate and the ground and the inability of the cover plate to be fully opened, thus ensuring the construction quality and the function of later use. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the secondary molding structure of the water collection well of this utility model.
[0014] The diagram is marked as follows:
[0015] 1. Side wall of the sump pit; 2. Reinforcing steel bars; 3. C25 fine aggregate concrete layer.
[0016] 4. Embedded sleeve; 5. Building floor; 6. Protrusion. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] Figure 1 This is a schematic diagram of the secondary molding structure of the water collection well of this utility model.
[0019] Please see Figure 1 The secondary-formed water collection well provided by this utility model includes an embedded steel bar 2 set in the side wall 1 of the water collection pit. The embedded steel bar 2 is cast in a C25 fine stone concrete layer 3. The C25 fine stone concrete layer 3 is cast around the side wall 1 of the water collection pit to form a well cover installation base. A pre-embedded sleeve 4 is arranged in the C25 fine stone concrete layer 3. The C25 fine stone concrete layer 3 is flush with the building floor 5.
[0020] In a preferred embodiment, both ends of the implanted reinforcing bar 2 extend into the side wall 1 of the sump pit, and the middle portion of the implanted reinforcing bar 2 forms a U-shaped ring cast in the C25 fine aggregate concrete layer 3. The implantation depth of the implanted reinforcing bar 2 is not less than 10d, where d is the diameter of the implanted reinforcing bar. Specifically, the implanted reinforcing bar 2 is an HRB400 steel bar with a diameter of 10mm, arranged at a spacing of 150mm, and symmetrically implanted on both sides of the side wall 1 of the sump pit.
[0021] The secondary-formed water collection well provided by this utility model preferably has a rectangular manhole cover mounting base with a height of 200mm. A protrusion 6 is formed on the manhole cover mounting base to better install and fix the manhole cover.
[0022] The secondary-formed water collection well provided by this utility model is suitable for cast iron cover plates with bases. The specific dimensions can be set according to the size of the well cover. The length of the well cover mounting base is the size of the finished well cover, the height is the width of the finished well cover base, and the height of the protrusion 6 is the height of the building floor minus the height of the well cover (if the floor has a slope, it needs to follow the slope).
[0023] The secondary-formed water collection well provided by this utility model comprehensively considers load-bearing capacity, water collection well cover size, building floor height, and the location of water pumps and sewage pipes; the specific construction is as follows:
[0024] Step 1: Based on the determined dimensions of the finished manhole cover, install rebar 200mm high on the side wall 1 of the original sump pit. The rebar 2 is C10@150, the installation depth is not less than 10d (d is the diameter of the rebar), and the thickness of the rebar protective layer is 3cm.
[0025] Step 2: After the rebar has reached the required strength, set up the formwork and determine the height of the manhole cover installation base and the height of the protrusion 6.
[0026] Step 3: Determine the location of the submersible sewage pump and sewage riser based on the site conditions, and pre-install the pre-embedded sleeve 4 at the location of the sewage riser to avoid conflict between the opening position of the sump cover and the riser.
[0027] Step 4: After the above steps are completed, C25 fine aggregate concrete is used for pouring. After pouring, proper curing is carried out. Once the required strength is met, the formwork is removed and the area is cleaned.
[0028] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.
Claims
1. A secondary-formed water collection well, characterized in that, The system includes embedded steel bars (2) installed in the side wall (1) of the sump, the embedded steel bars (2) being cast in a C25 fine stone concrete layer (3), the C25 fine stone concrete layer (3) being cast around the side wall (1) of the sump to form a manhole cover installation base; a pre-embedded sleeve (4) is arranged in the C25 fine stone concrete layer (3), and the C25 fine stone concrete layer (3) is flush with the building floor (5).
2. The secondary-formed water collection well as described in claim 1, characterized in that, The two ends of the implanted steel bar (2) extend into the side wall (1) of the sump pit, and the middle part of the implanted steel bar (2) forms a U-shaped ring and is poured into the C25 fine stone concrete layer (3).
3. The secondary-formed water collection well as described in claim 2, characterized in that, The implantation depth of the implanted steel bar (2) is not less than 10d, where d is the diameter of the implanted steel bar.
4. The secondary-formed water collection well as described in claim 2, characterized in that, The implanted steel bars (2) are HRB400 steel bars with a diameter of 10mm and a spacing of 150mm, and are symmetrically implanted on both sides of the side wall (1) of the sump.
5. The secondary-formed water collection well as described in claim 1, characterized in that, The manhole cover mounting base is rectangular in shape and has a height of 200mm.
6. The secondary-formed water collection well as described in claim 1, characterized in that, The manhole cover mounting base has a protrusion (6).
7. The secondary-formed water collection well as described in claim 1, characterized in that, The pre-embedded sleeve (4) is located at the sewage riser.