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Reinforced concrete pipe culvert dredging method

A technology of reinforced concrete and pipe culverts, which is applied in the direction of separation methods, chemical instruments and methods, earth movers/excavators, etc., and can solve problems such as inconvenient dredging of pipes and culverts

Active Publication Date: 2021-09-10
CREGC ARCHITECTURAL & CONSTR ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a method for dredging reinforced concrete pipe culverts, which solves the problem of the continuous flow of water entering the upstream of the pipe culverts, resulting in extremely poor dredging of pipe culverts. Convenience

Method used

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  • Reinforced concrete pipe culvert dredging method
  • Reinforced concrete pipe culvert dredging method
  • Reinforced concrete pipe culvert dredging method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of reinforced concrete pipe culvert dredging method, such as Figure 7 As shown, it includes the following steps:

[0044] S1. The upstream end of the pipe culvert to be dredged is blocked, and the upstream flowing water is introduced into the downstream of the pipe culvert to be dredged through a temporary pipeline;

[0045] S2. Add one or more of the following materials to the inside of the pipe culvert to be dredged: sludge curing agent, sand, soil;

[0046] S3. Use a stirring device to stir and mix the materials added in S2 with the sludge evenly, and stir the sludge to a state close to a solid state that can be excavated and loaded;

[0047] S4. Using an excavator to excavate the mixed silt stirred in S3, and dump the excavated silt into the loading box of the silt loading vehicle;

[0048] S5. After the silt excavation is completed, the blockage of the upstream section is released, and the temporary pipeline is removed at the same time;

[0049] S6. Acco...

Embodiment 2

[0052] Such as Figure 1 to Figure 6As shown, the excavator 1 includes a body 2, a mechanical arm 3 installed on the rotating platform of the body 2, and a bucket 4 installed at the end of the mechanical arm 3 through a pin assembly. The pin assembly includes a pin 5, a main The bushing 6, the nut 14 and the ear plate assembly, the main pin hole 7 is arranged on the mechanical arm 3, and the ear plate assembly includes the ear plate 8 and the side bushes 9 coaxial with each other, the inner connecting ring 10, the rolling bearing 11 and the outer The connecting ring 12, the ear plate 8 is installed on the top of the bucket 4, and a side pin hole 13 is arranged on it, the side bushing 9 is spline-fitted with the side pin hole 13, and one end thereof is connected to the rolling bearing 11 through the inner connecting ring 10 The inner ring abuts, the main bush 6 is splined with the kingpin hole 7, and the main bush 6 is fixed on the mechanical arm 3, and one end thereof abuts ag...

Embodiment 3

[0059] This embodiment is based on Embodiment 2 to further illustrate the implementation of the present invention.

[0060] When the excavating device excavates the silt, its surface will be contaminated with dirt, which will damage the thread between the nut and the pin shaft, which is not conducive to the disassembly of the nut later, so if image 3 and Figure 5 As shown, a protective assembly is provided at the end of the pin shaft 5 away from the head of the pin shaft 5, and an annular groove 21 whose axis coincides with it is provided at the end of the nut 14 away from the head of the pin shaft 5;

[0061] The protective assembly includes a bolt 20, a sealing ring 19, a screw rod 15, a positioning cylinder 16, a bellows 17, and an insertion cylinder 18 connected coaxially in sequence. One end of the positioning cylinder 16 is a closed end, and the other end is toward the nut 14. One point of the screw rod 15 is inserted into the inner hole of the positioning cylinder 16...

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Abstract

The invention discloses a reinforced concrete pipe culvert dredging method. The method comprises the following steps of S1, sealing off the upstream end of a to-be-dredged pipe culvert, and guiding upstream flowing water into the downstream of the to-be-dredged pipe culvert through a temporary pipeline; S2, adding one or more of the following materials into the to-be-dredged pipe culvert: a sludge curing agent, sandy soil and soil; S3, uniformly stirring and mixing the materials added in the step S2 with the sludge by adopting a stirring device; and S4, excavating the mixed sludge stirred in the step S3 by adopting an excavator, and pouring the excavated sludge into a loading box of a sludge loading vehicle. The upstream of the to-be-dredged pipe culvert is sealed off, so that the upstream flowing water is prevented from entering the to-be-dredged pipe culvert, and the adverse effect of the flowing water on subsequent sludge fixation can be effectively prevented; and meanwhile, the upstream flowing water is introduced into the downstream of the to-be-dredged pipe culvert through the pipeline, the upstream water accumulation pressure can be effectively relieved, and normal upstream flowing water is guaranteed.

Description

technical field [0001] The invention relates to the field of water conservancy engineering, in particular to a method for dredging reinforced concrete pipe culverts. Background technique [0002] Pipe culverts refer to buried water pipes that can be used as waterways below ground level. Pipe culverts are structures in highway and railway engineering, and generally refer to round pipe culverts, which are culverts made of circular pipes made of reinforced concrete. The diameter of the large section of the pipe culvert is 3 to 4 meters, and its length can reach more than 600 meters. Over time, the inside of the pipe culvert has accumulated silt for many years, but the silt is soft and cannot enter the equipment, and a large amount of non-breathable gas has accumulated in the pipe for many years, which is not convenient for pedestrians to enter. In addition, the upstream of the pipe culvert has continuous flow of water, which makes it extremely inconvenient to desilt the pipe ...

Claims

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Application Information

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IPC IPC(8): E02F3/28E02F3/36E02F3/40B01D29/01
CPCE02F3/28E02F3/36E02F3/40E02F3/3604E02F3/401B01D29/01
Inventor 彭志强李振东白敏杰任毅
Owner CREGC ARCHITECTURAL & CONSTR ENG CO LTD
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