Underwater blasting construction method

A construction method and filling technology, which is applied in blasting and other directions, can solve problems such as inability to set up an above-water construction operation platform, broken pipes, and difficult construction, and achieve the effect of large-scale underwater blasting operations

Active Publication Date: 2018-11-20
CHINA GEZHOUBA (GRP) FIRST ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of local conditions, it is impossible to set up the construction work platform on the water, and the construction is difficult
[0003] Moreover, the common underwater pipe drilling is generally carried out by geological drilling rig or 100B down-the-hole drilling rig, and t

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Embodiment Construction

[0035] Such as figure 1 Among them, an underwater blasting construction method, comprising the following steps:

[0036] s1. Fill the underwater blasting site with the underwater filling body 3 above the water surface to form a construction platform; The water surface is above 50cm.

[0037] s2. Use the down-the-hole drilling machine 1 to follow up the steel casing 2 to form a hole; preferably, the down-the-hole drilling machine 1 in this example is a high-pressure down-the-hole drilling machine, and the preferred model is CM351. In a preferred solution, when the underwater filling body 3 is drilled, an eccentric drill bit 13 is used to drill the underwater filling body 3, and after drilling into the bedrock 5, an ordinary drill bit is used to drill into a hole. The CM351 type drill is refitted as a tube drilling rig to use the eccentric drill bit to lower the steel casing to form holes in the slag filling body or in the water. When drilling, first use a low wind pressure i...

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Abstract

The invention provides an underwater blasting construction method. The underwater blasting construction method comprises the following steps that an underwater blasting part is filled with filling bodies to a space above the water surface, and a construction platform is formed; a down-the-hole drill is used for following a steel sleeve to form a hole; the steel sleeve is stopped following after penetrating through the whole underwater filling bodies at least; the drill continues to bore to the designed position of bedrock, the drill is taken out, a PVC sleeve is inserted, and the steel sleeveis pulled out; a blasting device is bound and is put into the hole, and is blasted through an electric blasting network or a non-electric blasting network; and underwater blasting construction is completed through the above steps. With the adoption of the scheme, the underwater blasting construction can be completed under the working condition that a boring operation platform can not be set up dueto condition restriction, and the underwater blasting construction method is particularly suitable for achieving large-scale underwater blasting work under the working condition that the depth of water is relatively large.

Description

technical field [0001] The invention relates to the field of drilling and blasting construction, in particular to an underwater blasting construction method. Background technique [0002] For a diversion channel, cofferdams were built at the inlet and outlet of the channel and on the left bank of the channel to ensure that the canal body was constructed under dry land conditions, and finally the water inlet and outlet were constructed by underwater demolition and blasting. The 20m range of the inner slope toe of the upstream and downstream cofferdams, the occupied area of ​​the cofferdam and the area outside the cofferdam are all underwater excavation areas, with a total area of ​​about 22,700 m 2 , with a total excavation volume of 200,000 m 3 . Due to the limitation of local conditions, it is impossible to build a construction platform on the water, and the construction is difficult. [0003] Moreover, the common underwater hole drilling is generally carried out by geol...

Claims

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Application Information

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IPC IPC(8): F42D3/00F42D1/00
CPCF42D1/00F42D3/00
Inventor 涂胜袁柏文文超刘野李梁林文斌黎学皓向旭辉孙运华刘世艳胡方华熊建武
Owner CHINA GEZHOUBA (GRP) FIRST ENG CO LTD
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