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A construction method for laying municipal sewage pipelines

A technology for sewage pipes and construction methods, which is applied to sewer systems, waterway systems, buildings, etc., can solve problems such as being unsuitable for use in day and night temperature difference, low water absorption, and environmental stress sensitivity, and can improve the degree of bonding and stretching. Strength, the effect of improving mechanical strength

Active Publication Date: 2020-11-24
温州市龙湾大地绿化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its excellent low temperature resistance, good chemical stability, ability to withstand most acid and alkali erosion, low water absorption, and excellent electrical insulation performance, polyethylene is used as the material of choice for expansion joint plates. However, polyethylene is more resistant to environmental stress. Sensitive, so it is not suitable for use in areas with large temperature differences between day and night, needs to be improved

Method used

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  • A construction method for laying municipal sewage pipelines
  • A construction method for laying municipal sewage pipelines
  • A construction method for laying municipal sewage pipelines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A construction method for laying municipal sewage pipelines, comprising the following steps:

[0055] Step 1, prefabricating the bottom concrete block and the top concrete compact;

[0056] Step 2, digging a trench to form a foundation trench;

[0057] Step 3, install the foundation groove support structure;

[0058] Step 4, place the prefabricated multiple bottom concrete pads, one or more pipes and the prefabricated multiple top concrete briquettes successively into the foundation trench by means of lifting equipment and manual assistance, one top concrete briquette and A bottom concrete pad forms an up-and-down composite structure, so that the two ends of each pipe are respectively supported in a semicircular groove of a bottom concrete pad, and are respectively compressed in a semicircular concave groove of a top concrete block. In the groove; and directly place the expansion joint plate between the combined structure of the adjacent two sets of bottom concrete pa...

Embodiment 2

[0064] The difference from Example 1 is that, in terms of parts by weight, the expansion joint plate raw materials are as shown in Table 1.

Embodiment 3

[0066] The difference from Example 1 is that, in terms of parts by weight, the expansion joint plate raw materials are as shown in Table 1.

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Abstract

The invention discloses a construction method for laying municipal sewage disposal pipes. Expansion joint plates used in the construction are prepared from the following components in parts by weight:80-100 parts of linear low density polyethylene, 15-20 parts of nanometer zinc oxide, 12-15 parts of a coupling agent and 6-10 parts of a dispersant. The construction method for laying the municipalsewage disposal pipes has the following beneficial effects that the nanometer zinc oxide is modified by the coupling agent, the polarity is reduced, and the bonding degree between the nanometer zinc oxide and the linear low density polyethylene is improved. The nanometer zinc oxide is added into online the low density polyethylene, the mechanical strength of the expansion joint plates can be effectively improved; meanwhile, the nanometer zinc oxide, as an inorganic particle, has a large modulus and can bear a certain load to improve the tensile strength; and therefore, the expansion joint plates have good stability and are suitable for various areas in various environments.

Description

technical field [0001] The invention relates to the technical field of pipeline construction, in particular to a construction method for laying municipal sewage pipelines. Background technique [0002] At present, municipal sewage pipelines are generally laid by segmented connection construction, and each segment adopts the following construction technology: [0003] S1, digging a trench to form a foundation trench; [0004] S2, install foundation groove support structure, usually adopt steel box support; [0005] S3, pouring pipe bottom concrete to the bottom of the foundation trench, setting a polyethylene expansion joint plate every 6 meters, the polyethylene expansion joint plate is fixed by a special structure, and the poured pipe bottom concrete is manually leveled; [0006] S4, after the concrete at the bottom of the pipe after pouring is initially solidified, usually the initial solidification time is 4-8 hours, one or more pipes are placed on the cured concrete at...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E03F3/06
CPCE03F3/06
Inventor 陈智豪陈瑞平张甜甜
Owner 温州市龙湾大地绿化有限公司
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