Cofferdam blasting method for reducing water damage

A cofferdam and water body technology, applied in blasting and other directions, can solve problems such as complex structures and achieve the effect of improving the buffering effect

Active Publication Date: 2020-03-24
淳安千岛湖子龙土石方工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are many types of cofferdams and complex structures

Method used

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  • Cofferdam blasting method for reducing water damage
  • Cofferdam blasting method for reducing water damage
  • Cofferdam blasting method for reducing water damage

Examples

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Embodiment 1

[0035] A cofferdam blasting method for reducing water damage, comprising the steps of:

[0036] A. Set up the buffer zone: The buffer zone includes arc-shaped buffer tank 1, buffer hole 2 and buffer slope 3. The sequence of arc-shaped buffer tanks 1 is arranged around the cofferdam;

[0037] B, buffer device is set: buffer device is set between buffer slope 3 and buffer hole 2, and buffer device comprises annular wall inner layer 4 and annular wall outer layer 5, and annular wall inner layer 4 and annular wall outer layer 5 are respectively inserted into surrounding On the outer side of the weir, several buffer pipes 6 are evenly arranged between the inner layer 4 of the annular wall and the outer layer 5 of the annular wall;

[0038] C. Arranging blast holes 7: Drill continuous blast holes 7 on the inner side of the concrete anti-seepage wall of the cofferdam, so that the angle between the blast holes 7 and the horizontal position of the cofferdam is 60 degrees, so that the ...

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PUM

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Abstract

The invention relates to the technical field of cofferdam blasting, and discloses a cofferdam blasting method for reducing water damage, which comprises the following steps of: A, setting a buffer area, wherein the buffer area comprises an arc-shaped buffer groove, a buffer hole and a buffer slope, and the buffer area is arranged on a substrate around a cofferdam, B, setting a buffer device between the buffer slope and the buffer hole, C, distributing blasting holes: digging continuous blasting holes in the inner side of a cofferdam concrete diaphragm wall, D, filling the blasting holes: distributing the explosive quantity and the detonator of each blasting hole and conducting explosive charging according to the explosive quantity, and E, igniting and detonating. Through the arrangement ofthe buffer area, the influence of impact force generated by blasting on surrounding water, soil and buildings is reduced, and the obvious buffer effect is achieved on the surrounding blasting range of the cofferdam; through the arrangement of the buffer device, the first wave impact force generated by blasting is greatly reduced, the impact force generated at the bottom of blasting is effectivelyblocked, and then the buffer effect is improved in cooperation with the buffer area.

Description

technical field [0001] The invention relates to the technical field of cofferdam blasting, in particular to a cofferdam blasting method for reducing water damage. Background technique [0002] Cofferdam refers to the temporary enclosure structure built for the construction of permanent water conservancy facilities in the construction of water conservancy and hydropower projects. Pit, building buildings. Generally, it is mainly used in hydraulic construction. Except as a part of the formal building, the cofferdam needs to be removed after use. [0003] Cofferdams are generally built according to terrain and geological conditions and local conditions. Therefore, there are many types of cofferdams and their structures are complex. According to the relative position of the cofferdam and the water flow direction, it can be divided into horizontal cofferdam and longitudinal cofferdam; according to whether the foundation pit is allowed to be submerged during the diversion period...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/08F42D3/04
CPCF42D1/08F42D3/04
Inventor 管晓星翁永明管朝波李永红胡国平
Owner 淳安千岛湖子龙土石方工程有限公司
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