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Construction device and method of hand-digging pipe jacking in mud, sand and silt areas

A technology of construction device and construction method, which is applied in the direction of pipeline laying and maintenance, pipe/pipe joint/pipe fitting, mechanical equipment, etc., can solve the failure of pipe jacking construction, the difficulty of correcting deviation of hand-dug pipe jacking construction, and the entrance of tool pipe. Automatic collapse and other problems, to achieve the effect of good excavation environment, improve strength, and prevent blockage

Inactive Publication Date: 2015-12-02
CHINA GEZHOUBA (GRP) FIRST ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fluidity of silt and quicksand, the entrance of the tool pipe often collapses automatically, and even quicksand or silt flows into the tool pipe, which makes it difficult to correct the deviation during the hand-dug pipe jacking construction, and then causes the pipe jacking construction to fail.

Method used

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  • Construction device and method of hand-digging pipe jacking in mud, sand and silt areas
  • Construction device and method of hand-digging pipe jacking in mud, sand and silt areas
  • Construction device and method of hand-digging pipe jacking in mud, sand and silt areas

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Embodiment 1

[0028] Such as Figure 2~4 Among them, a hand-dug type pipe jacking construction device in mud, sand and silt areas, including a tool pipe 5, a jack 9 is provided between the tool pipe 5 and the concrete back, and a water seepage pipe 1 is provided at the front end of the tool pipe 5, and the water seepage pipe 1 One part passes through the pipe cap 4, and the other part is located in the tool pipe 5. The front end of the seepage pipe 1 is tapered to facilitate jacking, and the rear end is open to facilitate drainage. On the wall of the seepage pipe 1, there are multiple Seepage hole 2. With this structure, groundwater enters the seepage pipe 1 through the water seepage hole 2 and gathers to form a groundwater funnel, thereby reducing the groundwater level at the front end of the tool pipe 5, as image 3 , 4 shown in . This optimizes the operating conditions for hand digging pipe jacking construction.

[0029] The preferred solution is as figure 2 , 3 Among them, a wate...

Embodiment 2

[0035] Such as Figure 1~4 Shown in, a kind of method that adopts the construction device of above-mentioned embodiment to carry out the method for hand-dug type pipe jacking construction in mud sand silt area, comprises the following steps:

[0036] 1. A row of vertical loaded piles 8 are driven into the working well on the side facing the tool pipe 5; the bearing capacity of the concrete back 13 is improved by driving the loaded piles 8;

[0037] Two, pour the back 13 before the loaded pile 8, install the jack 9 and the top iron 10;

[0038] 3. At the inner bottom of the front end of the tool pipe 5, drive one or more seepage pipes 1, only one is shown in the figure, and the groundwater in the soil near the mouth of the tool pipe seeps out in advance through the seepage pipe 1, so that the tool pipe The mouth is within the scope of the precipitation funnel;

[0039] 4. Every time the tool pipe 5 is jacked up one stroke, the seepage pipe 1 is jacked up one stroke in advance...

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Abstract

The invention provides a hand digging type pipe jacking construction device and method for sediment and sludge areas. The hand digging type pipe jacking construction device comprises a tool pipe, wherein jacks are arranged between the tool pipe and a concrete back. A water seepage pipe is arranged at the front end of the tool pipe. Part of the water seepage pipe penetrates through a pipe cap, and the other part of the water seepage pipe is located in the tool pipe. The rear end of the water seepage pipe is open, and a plurality of water seepage holes are formed in the pipe wall of the water seepage pipe. According to the hand digging type pipe jacking construction device and method for sediment and sludge areas, the water seepage pipe is arranged at the front end of the tool pipe, the underground water level is lowered through the water collection action of the water seepage pipe, and therefore strength of a work soil body is improved, and conditions are created for hand digging type work. Well-point dewatering pipes are arranged, and therefore deep well point dewatering is achieved, the water content of the portion, provided with the concrete back, of the soil body is lowered, and strength of the position of the soil body is improved. Load-bearing piles are arranged, and therefore the force borne by the concrete back is further increased, and end reaction can be conveniently borne by the jacks.

Description

technical field [0001] The invention relates to the field of hand-dug pipe jacking construction, in particular to a hand-dug pipe jacking construction device and method in mud, sand and silt areas. Background technique [0002] In recent years, my country's sewage treatment projects have developed rapidly. Many urban underground large-diameter pipelines need to pass through urban streets, municipal roads, highways or railways. In order to reduce damage to buildings and minimize the impact on traffic, pipe jacking construction is often used . Due to the high cost of special construction equipment for pipe jacking, in most cases, hand-dug pipe jacking is used for construction. During the implementation of pipe jacking, soft strata such as silt and quicksand are often encountered, because the back cannot withstand the reaction during the jacking process. It brings great difficulty to the ordinary hand-digging pipe jacking construction, and even causes the failure of the pipe ja...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L1/028
CPCF16L1/028
Inventor 黄浩肖卓文高忠武何延平孙丽凤曾利红汪红兵王琳
Owner CHINA GEZHOUBA (GRP) FIRST ENG CO LTD
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