Seawall silt soft base blasting orienting sliding and moving method

A silt and seawall technology, applied in marine engineering, soil protection, infrastructure engineering, etc., can solve the problems of poor orientation effect, uneven stone falling to the bottom, large post-construction settlement, etc., and achieve small post-construction settlement. , the effect of less explosive usage and precise sliding direction

Inactive Publication Date: 2013-06-19
ANHUI WATER RESOURCES DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing blasting dredging method only arranges the explosive package at the embankment head, and the blasting adopts a simu...

Method used

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  • Seawall silt soft base blasting orienting sliding and moving method
  • Seawall silt soft base blasting orienting sliding and moving method
  • Seawall silt soft base blasting orienting sliding and moving method

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Experimental program
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Effect test

Embodiment 1

[0050] For the reclamation project of the breakwater construction site, the embankment is a slope type with a length of 252m. The thickness H of the silt layer 5 within the dike range m Between 10.7 and 13.35m, the depth of the water layer 6 above the silt is 10m, and the dike body throwing fill width is 14m.

[0051] The specific construction steps are as figure 1 — Figure 5 Shown:

[0052] (1) Measurement and positioning: According to the existing coordinate control base point, GPS equipment is used for measurement and release, and the centerline control point of the seawall and the control sideline of the dumping and filling are respectively established on the sea surface and on land;

[0053](2) Throwing and filling construction: according to the construction design width and height of throwing and filling, throwing and filling shall be carried out. The weight of the throwing filler shall be mixed stone with a weight of 10-1000kg and a mud content of less than 10%. Fo...

Embodiment 2

[0061] The total length of the embankment is 3022.972m, and the volume of sludge treated is 722,000m 3 , with an average mud depth of about 11.0m and a maximum of 15.30m.

[0062] The specific construction steps are as figure 1 — Figure 5 Shown:

[0063] (1) Measurement and positioning: According to the existing coordinate control base point, GPS equipment is used for measurement and release, and the centerline control point of the seawall and the control sideline of the dumping and filling are respectively established on the sea surface and on land;

[0064] (2) Throwing and filling construction: according to the construction design width and height of throwing and filling, throwing and filling shall be carried out. The weight of the throwing filler shall be mixed stone with a weight of 10-1000kg and a mud content of less than 10%. For heightening treatment, the height of the embankment head is 1.0-2.5m, which is in the shape of a slope, and the height of both sides of th...

Embodiment 3

[0071] The seawall core blasting silt extrusion project consists of an arc-shaped embankment with a total length of about 1,700m. The amount of underwater silt processed by blasting and directional sliding is 1.66 million m 3 , the average depth of the silt layer 5 is 8m, the depth of the covered water layer 6 is 5m, and the maximum thickness is about 25m.

[0072] The specific construction steps of each embankment are as follows: figure 1 — Figure 5 Shown:

[0073] (1) Measurement and positioning: According to the existing coordinate control base point, GPS equipment is used for measurement and release, and the centerline control point of the seawall and the control sideline of the dumping and filling are respectively established on the sea surface and on land;

[0074] (2) Throwing and filling construction: according to the construction design width and height of throwing and filling, throwing and filling shall be carried out. The weight of the throwing filler shall be mi...

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Abstract

A seawall silt soft base blasting orienting sliding and moving method comprises the following steps: firstly, stones are threw and filled, when the stones and silt are balanced and cannot naturally sink, double rows of blasting charges are arranged on the silt of certain depth on two sides of a seawall head and a seawall body, blasting is carried on in the outside before inside, seawall head before two sides sequence mode in blasting, at the moment of blasting, negative pressure cavities can generate in slit bags on the two sides of the seawall head and the seawall body due to blasting, stones then collapse into the cavities, and replacement of the silt with the stones is achieved, the cycle is conducted, and the replacement process is continuously pushed forwards until the seawall body is achieved, and design requirements are met. The seawall silt soft base blasting orienting sliding and moving method has the advantages that positioning is accurate; stone dropping effect is good, construction efficiency is high and the like.

Description

technical field [0001] The invention relates to an explosive treatment method for a seawall muddy soft foundation, in particular to a seawall muddy soft foundation explosion directional sliding method. technical background [0002] In recent years, the country has vigorously developed the marine economy, and coastal tidal flat resources have been fully developed and utilized. Coastal tidal flats in my country are mostly silty soft foundations with poor bearing capacity. To build structures such as seawalls on such natural foundations, the soft foundations must be treated. The current treatment method is to use blasting to squeeze out the silt for foundation treatment, and then throw and fill stones to form a seawall that meets the design section requirements. However, the existing blasting dredging method only arranges the explosive package at the dike head, and the blasting adopts a simultaneous blasting method, which leads to uneven stone falling, poor orientation effect, ...

Claims

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Application Information

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IPC IPC(8): E02D3/10E02B3/04
CPCY02A10/11
Inventor 苏颖许克顺司马文陈圣刚陈媛媛白彦平吴先锋
Owner ANHUI WATER RESOURCES DEV
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