Method for constructing a power tube well

Abstract

The application discloses a power pipe well construction method, which reserves a water collecting pit when excavating earthwork of a small foundation pit of a power pipe well, utilizes the power pipe well and a pipeline as drainage, or utilizes manpower to timely clean the small foundation pit accumulated water, overcomes the problems of drainage recharging, back infiltration and long drainage pipeline, wherein the bottom plate steel bars of the power pipe well adopt a steel bar cage, and an inner mold cylinder adopts an integral cylinder body, thereby accelerating construction progress. The application solves the problems of drainage recharging, back infiltration and long drainage pipeline in the conventional method of constructing the power pipe well.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and specifically to a method for constructing power pipeline wells. Background Technology

[0002] The conventional method for constructing power conduit wells includes the following steps: surveying and setting out; dewatering and excavation; concrete foundation layer for the well pit; detailed layout; binding of bottom slab reinforcement, internal wall formwork and supports; laying of power conduits; external wall reinforcement; external wall formwork (concrete pouring and curing, internal wall formwork removal); concrete pouring; concrete curing and formwork removal.

[0003] When constructing power pipe wells using conventional methods, the underground foundation pit often accumulates water, especially during the rainy season. The construction site itself is small, and the backfill excavation of the foundation pit collapses severely. Mud and water erode the foundation pit, affecting the construction quality of the foundation bearing layer, reinforcement, formwork, and concrete.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, a construction method for power pipeline wells is provided to solve the problems of drainage, backflow, and seepage, as well as long drainage pipelines, that exist in conventional methods for constructing power pipeline wells.

[0006] To achieve the above objectives, a method for constructing power pipeline wells is provided, comprising:

[0007] Determine the laying path of the power pipeline and the construction location of the multiple power pipeline manholes;

[0008] Excavate a receiving trench along the laying path;

[0009] Power lines are laid in the accommodating trench;

[0010] Small foundation pits were excavated at multiple construction sites, and some of these small foundation pits were used as reserved water collection pits.

[0011] The construction of electrical manholes in the remaining small foundation pits is carried out. The accumulated water in the remaining small foundation pits is discharged into the reserved water collection pit through the receiving trough. After the water is dewatered, some electrical manholes are poured in the remaining small foundation pits to form some electrical manholes, so that the power lines extend into the partial electrical manholes.

[0012] The water accumulated in the small foundation pits is discharged into the power wells via the power lines.

[0013] The remaining power pipe wells are formed by pouring concrete into the aforementioned small foundation pits, so that the power lines extend into the remaining power pipe wells.

[0014] Furthermore, during the pouring of the power pipe well, a pad is installed at the corner of the small foundation pit, a bottom plate reinforcement cage is placed on the pad, and concrete is poured at the bottom of the foundation pit. The concrete covers the bottom reinforcement cage to solidify and form the bottom plate of the power pipe well.

[0015] Furthermore, an inner mold is suspended above the bottom plate reinforcement cage, a side wall reinforcement cage is installed on the outside of the inner mold, an outer formwork is supported on the outside of the side wall reinforcement cage, and concrete is poured between the outer formwork and the inner mold to solidify and form the side wall of the power pipe well.

[0016] Furthermore, the sidewall and the base plate are integrally cast.

[0017] Furthermore, after the inner mold cylinder is hoisted, a through hole is made in the inner mold cylinder, and the end of the power cable is passed through the through hole and extends to the inside of the inner mold cylinder.

[0018] Furthermore, before pouring the concrete for the base slab, the sediment at the bottom of the small foundation pit is cleaned.

[0019] The beneficial effects of this invention are as follows: the construction method for power manholes allows for the pre-reservation of a sump pit during the excavation of the small foundation pit. The power manhole and pipeline are used for drainage, or manual labor is employed to promptly remove accumulated water from the small foundation pit, overcoming the problems of drainage backflow and seepage, and long drainage pipelines. The foundation layer and the concrete base slab of the power manhole are cast in one continuous pour, or the base slab and sidewalls are cast in one continuous pour to form the power manhole. The base slab is paved with blocks or gravel, and a steel reinforcement cage is used. Alternatively, the foundation layer can be omitted. Before concrete pouring, accumulated water and sediment are removed from the foundation, or sediment and mud are removed. Underwater concrete pouring ensures concrete quality. The base slab reinforcement uses a steel reinforcement cage, and the inner formwork uses an integral cylinder, accelerating the construction progress. The power well construction method of this invention has a short construction period. Excavation and dewatering can be carried out in one day, and the bottom slab steel cage and inner formwork can be prefabricated and hoisted on site. Steel reinforcement, formwork and concrete can be completed in one day. This method effectively avoids the impact of groundwater leakage, soil collapse and rainwater erosion, ensures project quality, speeds up construction progress and reduces safety measures costs. Attached Figure Description

[0020] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 and Figure 2 This is a schematic diagram of the construction steps of the power well construction method according to an embodiment of the present invention. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Reference Figure 1 and Figure 2 As shown, the present invention provides a method for constructing power pipeline wells, comprising the following steps:

[0025] S1: Determine the laying path of power line 1 and the construction locations of multiple power manholes for power line 1.

[0026] S2: Excavate a receiving trench along the laying path.

[0027] S3: Lay electrical cables 1 in the receiving trench.

[0028] S4: Small foundation pits are excavated at multiple construction sites, and some of these small foundation pits are used as reserved water collection pits.

[0029] Specifically, the first step is to measure and lay out the lines to determine the excavation line of the small foundation pit for the power pipeline well and the structural positioning details.

[0030] S5: Construct the electrical manholes in the remaining small foundation pits, drain the accumulated water in the remaining small foundation pits into the reserved water collection pit through the receiving trough, and pour part of the electrical manhole A in the remaining small foundation pits after dewatering, so that the power line 1 extends into part of the electrical manhole A.

[0031] S6: Drain some of the water accumulated in the small foundation pit through power line 1 into part of the power well A.

[0032] S7: The remaining power pipe wells B are formed by pouring concrete in some of the small foundation pits, so that the power line 1 extends into the remaining power pipe wells B.

[0033] When pouring concrete for the power pipe well, install pads at the corners of the small foundation pit, place the bottom plate reinforcement cage on the pads, and pour concrete at the bottom of the foundation pit. The concrete covers the bottom reinforcement cage to solidify and form the bottom plate 3 of the power pipe well.

[0034] Specifically, the construction process involves adding concrete blocks (or laying gravel) at the four corners of the small foundation pit, cleaning up sediment and mud, hoisting the bottom slab reinforcement cage, and pouring underwater concrete to accelerate the construction progress and ensure construction quality.

[0035] An inner formwork is suspended above the bottom slab reinforcement cage. A side wall reinforcement cage is installed on the outside of the inner formwork. An outer formwork is supported on the outside of the side wall reinforcement cage. Concrete is poured between the outer formwork and the inner formwork to solidify and form the side wall 4 of the power conduit well.

[0036] The side walls and the bottom plate are cast as a single unit.

[0037] The inner mold cylinder was hoisted as a whole, the steel bars on the side walls were inserted, and the formwork was positioned to improve the accuracy of structural positioning and speed up the construction progress.

[0038] After the inner mold cylinder is installed, a through hole is made in the inner mold cylinder. The end of the power cable 1 is passed through the through hole and extends to the inside of the inner mold cylinder.

[0039] Before pouring the concrete for the foundation slab, clean the sediment at the bottom of the small foundation pit.

[0040] Concrete pouring includes simultaneous pouring of the underwater subbase and base slab or elimination of the subbase, simultaneous pouring of the underwater base slab and the manhole wall panel, concrete curing, and formwork removal.

[0041] The present invention relates to a method for constructing power manholes. During the excavation of the small foundation pit for the power manhole, a sump is pre-reserved. The power manhole and pipeline serve as drainage, or manual labor is used to promptly remove accumulated water from the small foundation pit, overcoming the problems of drainage backflow and seepage, and long drainage pipelines. The foundation layer and the concrete base slab of the power manhole are cast in one continuous pour, or the base slab and sidewalls are cast in one continuous pour to form the power manhole. The base slab is paved with blocks or gravel, and a steel reinforcement cage is erected above the base slab. Alternatively, the foundation layer can be omitted. Before concrete pouring, accumulated water and sediment are removed from the foundation, or sediment and mud are removed. Underwater concrete pouring ensures concrete quality. The base slab reinforcement uses a steel reinforcement cage, and the inner formwork uses an integral cylinder, accelerating the construction progress. The construction method of the present invention shortens the project time. Excavation and dewatering are completed in one day, and the base slab reinforcement cage and inner formwork are prefabricated and hoisted on-site. Reinforcement, formwork, and concrete are completed in one day, effectively avoiding the impact of groundwater leakage, soil collapse, and rainwater erosion, ensuring project quality, accelerating construction progress, and reducing safety measures costs.

[0042] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A method for constructing power pipeline wells, characterized in that, Includes the following steps: Determine the laying path of the power pipeline and the construction location of the multiple power pipeline manholes; Excavate a receiving trench along the laying path; Power lines are laid in the accommodating trench; Small foundation pits were excavated at multiple construction sites, and some of these small foundation pits were used as reserved water collection pits. The construction of electrical manholes in the remaining small foundation pits is carried out. The accumulated water in the remaining small foundation pits is discharged into the reserved water collection pit through the receiving trough. After the water is dewatered, some electrical manholes are poured in the remaining small foundation pits to form some electrical manholes, so that the power lines extend into the partial electrical manholes. The water accumulated in the small foundation pits is discharged into the power wells via the power lines. The remaining power pipe wells are formed by pouring concrete into the aforementioned small foundation pits, so that the power lines extend into the remaining power pipe wells.

2. The method for constructing power pipeline wells according to claim 1, characterized in that, When pouring concrete for the power pipe well, a pad is installed at the corner of the small foundation pit, a bottom plate reinforcement cage is placed on the pad, and concrete is poured at the bottom of the foundation pit. The concrete covers the bottom plate reinforcement cage to solidify and form the bottom plate of the power pipe well.

3. The method for constructing power pipeline wells according to claim 2, characterized in that, An inner mold is suspended above the bottom plate reinforcement cage, a side wall reinforcement cage is installed on the outside of the inner mold, an outer formwork is supported on the outside of the side wall reinforcement cage, and concrete is poured between the outer formwork and the inner mold to solidify and form the side wall of the power pipe well.

4. The method for constructing power pipeline wells according to claim 3, characterized in that, The sidewall and the base plate are integrally cast.

5. The method for constructing power pipeline wells according to claim 3, characterized in that, After the inner mold cylinder is hoisted, a through hole is made in the inner mold cylinder, and the end of the power line is passed through the through hole and extends to the inside of the inner mold cylinder.

6. The method for constructing power pipeline wells according to claim 2, characterized in that, Before pouring the concrete for the base slab, the sediment at the bottom of the small foundation pit is cleaned.

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