A precipitation diversion structure for pipe well connection and a top-down construction method thereof

Abstract

The application discloses a kind of precipitation diversion structure for pipe well connection, including cofferdam, well body structure, baffle, valve, temporary conduit, sewage interception main pipe, sewage interception branch pipe, catch basin, telescopic buttress.Construction method specifically includes the following steps:1), sewage interception pipeline construction;2), cofferdam construction;3), well body structure construction.The application has the advantages compared with prior art: simplify construction procedure, remove temporary diversion and pipe well connection's leaking construction link, shorten construction period;Reverse construction method, first construction pipeline, then construction well body, equivalent to pipeline pre-embedded in advance, reduce later leakage risk and construction cost, improve engineering construction quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewage interception engineering pipe well connection construction, in particular to a reverse construction method for pipe well connection dewatering and flow guiding. BACKGROUND

[0002] At present, the common method for pipe well connection construction in domestic sewage interception engineering is to first construct a cofferdam, then construct a well body, and finally construct a pipeline. However, this method has many defects: 1. For cofferdam flow guiding construction, a separate flow guiding groove or pipeline must be arranged, which has high construction cost and low efficiency, and the flow guiding groove and pipeline have low reuse rate, and installation and removal are water-bearing operations, which have high safety risk, and therefore are not economical and safe; 2. After the construction of the sewage well body, the pipeline is constructed, and leakage is prone to occur at the connection between the pipe well, and the quality of the later leakage plugging construction is difficult to guarantee. In view of this, the development of a dewatering and flow guiding structure for pipe well connection and a reverse construction method thereof can not only save additional flow guiding measures, reduce workload, improve construction efficiency, and shorten the construction period, but also reduce the risk of leakage at the connection between the pipe well and the later quality maintenance, reduce construction cost, and have the effects of reducing cost and increasing efficiency. SUMMARY

[0003] The purpose of the present application is to solve the problems mentioned in the background art, and to provide a dewatering and flow guiding structure for pipe well connection and a reverse construction method thereof.

[0004] To solve the above technical problems, the technical scheme provided by the present application is as follows: a dewatering and flow guiding structure for pipe well connection, comprising a cofferdam, a well body structure is arranged in the cofferdam, the well body structure is rectangular, a partition plate is arranged in the middle of the well body structure, and a valve is arranged in the middle of the partition plate.

[0005] A temporary pipeline is arranged in the rectangular structure in the transverse direction, sewage main pipelines are fixedly arranged at both ends of the temporary pipeline, the sewage main pipelines are connected with the cofferdam and the temporary pipeline at both ends respectively, the sewage main pipelines and the temporary pipeline are fixed by flanges, and the temporary pipeline, the sewage main pipelines, and the cofferdam are fixed and supported by telescopic piers at the connection positions.

[0006] Sewage branch pipelines are arranged at the ends of the well body structure away from the sewage main pipelines, and the sewage branch pipelines are arranged in a vertical direction with respect to the sewage main pipelines.

[0007] A water collecting pit is further arranged in the well body structure, and the water collecting pit and the temporary pipeline are arranged on the two sides of the partition plate respectively.

[0008] The telescopic pier comprises an arc-shaped support base, an expansion joint is arranged at the bottom of the arc-shaped support base, and two adjusting and fixing bolts are arranged at the inner side of the top of the arc-shaped support base.

[0009] As a preferred scheme, the adjusting and fixing bolts can be slidably fixed.

[0010] A reverse construction method for a precipitation flow guide structure of a pipe well connection, specifically comprising the following steps:

[0011] 1) Sewer pipeline construction: hoist the pipeline into the previously determined position by a crane, use a telescopic support pier, determine the position and elevation of the sewer main pipe according to the drawings, connect the sewer main pipe between the well body structures with a temporary guide pipe, connect the sewer main pipe and the temporary guide pipe with a flange, and combine the sewer main pipe and the temporary guide pipe into a flow guide pipe;

[0012] 2) Cofferdam construction: cut off the flow at the upper and lower ends of the cofferdam along the pipeline direction, and the sewer main pipe passes through the cofferdam, at this time, the combined flow guide pipe constructed previously is used for flow guide;

[0013] 3) Well body structure construction: after the cofferdam, the concrete well body structure is constructed, since the pipeline has been constructed previously, the pipeline can be poured together with the well body structure, after the well body structure construction is completed, the flange is opened, the temporary guide pipe is removed, and then the valve is opened, and the sewage collected by the sewer branch pipe is merged into the sewer main pipe.

[0014] As a preferred scheme, the temporary guide pipe and the flange can be reused when the next sewer well body is constructed.

[0015] As a preferred scheme, the sewer main pipe and the sewer branch pipe are pre-buried.

[0016] As a preferred scheme, the telescopic support pier in step 1) is movable, can adjust its own height, can be reused, and can be fixed through an arc-shaped support base and an adjusting fixing bolt.

[0017] Compared with the prior art, the present application has the advantages that the construction process is simplified, the temporary flow guide and the leakage plugging construction link of the pipe well connection are removed, the construction period is shortened, the reverse construction method is used, the pipeline is constructed first and then the well body is constructed, which is equivalent to pre-buried pipeline, reduces the risk of leakage in the later period and the construction cost, and improves the engineering construction quality. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the present application.

[0019] Figure 2 is a structural schematic diagram of the telescopic support pier of the present application.

[0020] As shown in the figure: 1, cofferdam, 2, well body structure, 3, partition plate, 4, valve, 5, temporary guide pipe, 6, sewer main pipe, 7, flange, 8, telescopic support pier, 9, sewer branch pipe, 10, water collecting pit, 11, arc-shaped support base, 12, telescopic joint, 13, adjusting fixing bolt, DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the manner or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, "first", "second", "third" are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be point connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In combination with the drawings, a precipitation flow guide structure for pipe well connection includes a cofferdam 1, a well body structure 2 is arranged in the cofferdam 1, the well body structure 2 is rectangular, a partition plate 3 is arranged in the middle of the well body structure 2, and a valve 4 is arranged in the middle of the partition plate 3.

[0025] A temporary guide pipe 5 is arranged transversely in the well body structure 2, a sewage interception main pipe 6 is fixedly arranged at both ends of the temporary guide pipe 5, both ends of the sewage interception main pipe 6 are connected with the cofferdam 1 and the temporary guide pipe 5 respectively, the sewage interception main pipe 6 and the temporary guide pipe 5 are fixed by a flange 7, and the temporary guide pipe 5, the sewage interception main pipe 6 and the cofferdam 1 at the connection position are supported and fixed by a telescopic support 8;

[0026] An sewage interception branch pipe 9 is arranged at the end of the well body structure 2 away from the sewage interception main pipe 6, and the sewage interception branch pipe 9 is arranged in a perpendicular direction to the sewage interception main pipe 6.

[0027] A water collecting pit 10 is further arranged in the well body structure 2, and the water collecting pit 10 and the temporary guide pipe 5 are located on both sides of the partition plate 3 respectively.

[0028] The telescopic support 8 comprises an arc-shaped support base 11, the bottom of which is provided with a telescopic joint 12, and the inner side of the top of which is provided with two adjusting fixing bolts 13.

[0029] The adjusting fixing bolts 13 are slidable and fixable.

[0030] A top-down construction method of a water precipitation diversion structure for pipe well connection, specifically comprising the following steps:

[0031] 1) Sewage pipe construction: the pipe is hoisted into the position determined in advance by a crane. The telescopic support 8 is used to determine the position and elevation of the sewage main pipe 6 according to the drawings, and the sewage main pipes 6 between the well body structures 2 are connected by temporary pipes 5, the sewage main pipes 6 and the temporary pipes 5 are connected by flanges 7, and the sewage main pipes 6 and the temporary pipes 5 are combined into diversion pipes;

[0032] 2) Cofferdam 1 construction: the cofferdam 1 at the upper and lower ends along the pipeline direction is cut off, the sewage main pipe 6 passes through the cofferdam 1, and the combined diversion pipe constructed in advance is used for diversion at this time;

[0033] 3) Well body structure 2 construction: the concrete well body structure 2 is constructed after the cofferdam 1, since the pipe has been constructed before, the pipe can be poured together with the well body structure 2, after the well body structure 2 is constructed, the flange 7 is opened, the temporary pipe 5 is removed, then the valve 4 is opened, and the sewage collected by the sewage branch pipe 9 is merged into the sewage main pipe 6.

[0034] The temporary pipe 5 and the flange 7 can be reused when the next sewage well body is constructed.

[0035] The sewage main pipe 6 and the sewage branch pipe 9 are pre-buried.

[0036] The telescopic support 8 in step 1) is movable, can adjust its own height, can be repeatedly used, and can fix the pipe through the arc-shaped support base 11 and the adjusting fixing bolts 13.

[0037] The present application in the specific implementation, sewage main construction, through the crane sewage main hoist into the pre-determined position, then use telescopic support pier support pipeline, adjust the pier position and telescopic joint so that the pipeline at the design elevation and position, by adjusting the slidable fixed bolt fixed pipe (to prevent the post-concrete pouring pipe position and elevation changes), then use the temporary conduit between the well body sewage pipe connection, the combined pipe can be in the later well body structure construction flow guide role, sewage main and temporary conduit flange connection, temporary conduit and flange can be reused, without the diversion trench construction; cofferdam construction, along the pipeline direction of the upper and lower ends with cofferdam cut-off, at this time can make use of the pre-construction of the combined pipe diversion, upstream water through the combined pipe to the downstream, save the additional diversion measures; well body structure construction, cofferdam after the use of water pumps cofferdam between the water pumping dewatering, then concrete well body construction, because of the previous pipeline has been completed, the pipeline can be with the well body pouring, which can greatly reduce the risk of water seepage, leakage, while saving the later well body joint sealing link, well body construction is completed after opening the flange, remove the temporary conduit, then open the valve, sewage can be through the sewage branch pipe into the sewage main, catch basin is for the later maintenance when convenient pumping dry, so that the well body and pipeline and other maintenance conditions.

[0038] The above describes the present application and its implementation, this description is not limited, shown in the drawings is only one of the embodiments of the present application, the actual structure is not limited. In general, if the ordinary skilled in the art is inspired, without departing from the purpose of the present invention, without creative design with the similar structure and examples of the technical solution, should belong to the scope of the present invention.

Claims

1. A top-down construction method for a dewatering flow guide structure for pipe well connection, characterized by: The precipitation diversion structure comprises a cofferdam, a well body structure is arranged in the cofferdam, the well body structure is rectangular, a partition plate is arranged in the middle of the well body structure, and a valve is arranged in the middle of the partition plate; A temporary guide pipe is arranged in the well body structure in the transverse direction, a sewage interception main pipe is fixedly arranged at both ends of the temporary guide pipe, the sewage interception main pipe is connected with the cofferdam and the temporary guide pipe at both ends respectively, and the sewage interception main pipe and the temporary guide pipe are fixed by flanges; the temporary guide pipe, the sewage interception main pipe and the cofferdam are supported and fixed by telescopic piers at the middle and the connection positions; An sewage interception branch pipe is arranged at the end of the well body structure away from the sewage interception main pipe, and the sewage interception branch pipe is arranged in the vertical direction of the sewage interception main pipe; A water collecting pit is further arranged in the well body structure, and the water collecting pit and the temporary guide pipe are arranged on the two sides of the partition plate respectively; The telescopic pier comprises an arc-shaped supporting base, an expansion joint is arranged at the bottom of the arc-shaped supporting base, and two adjusting fixing bolts are arranged at the inner side of the top of the arc-shaped supporting base; The reverse construction method specifically comprises the following steps: 1) sewage pipe construction: the pipe is hoisted into the position determined in advance by a crane, the telescopic pier is used, the position and elevation of the sewage interception main pipe are determined according to the drawing, the temporary guide pipe is used to connect the sewage interception main pipes between the well body structures, the flanges are used to connect the sewage interception main pipe and the temporary guide pipe, and the sewage interception main pipe and the temporary guide pipe are combined into a guide pipe; 2) cofferdam construction: the cofferdams at the upper and lower ends along the pipeline are cut off, the sewage interception main pipe passes through the cofferdam, and the combined guide pipe constructed in advance is used for diversion at this time; 3) well body structure construction: the concrete well body structure is constructed after the cofferdam, the pipe is poured together with the well body structure because the pipe has been constructed before, the flanges are opened after the well body structure construction is completed, the temporary guide pipe is removed, and then the valve is opened, so that the sewage collected by the sewage interception branch pipe flows into the sewage interception main pipe.

2. The top-down construction method of a precipitation flow guide structure for pipe well connection according to claim 1, characterized in that: The adjusting fixing bolts are slid or fixed.

3. A top-down construction method of a precipitation flow guide structure for pipe well connection according to claim 1, characterized in that: The temporary guide pipe and the flanges are reused when the next sewage well body is constructed.

4. The top-down construction method of a precipitation flow guide structure for pipe well connection according to claim 1, characterized in that: The sewage interception main pipe and the sewage interception branch pipe are pre-buried.

5. The top-down construction method of a precipitation flow guide structure for pipe well connection according to claim 1, characterized in that: The telescopic pier in step 1) is movable, can adjust the height thereof, is reusable, and can fix the pipe through the arc-shaped supporting base and the adjusting fixing bolts.

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