Underwater drilling and cutting construction method of reinforced concrete structure
A reinforced concrete and construction method technology, which is applied in the fields of earth drilling, building construction, construction, etc., can solve the problems of weak practicality, difficulty in removing concrete residue, polluted water quality, etc., shorten the construction period, improve construction efficiency, The effect of construction simplification
Active Publication Date: 2013-03-20
BEIJING FAYAN ENG TECH
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Problems solved by technology
However, this method is not very effective in practice and has certain dangers, and the concrete residue produced after the demolition is splashed everywhere due to the blasting force, polluting the water quality, and it is difficult to completely remove the concrete residue.
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[0033] The method of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0034] Such as figure 1 as shown, figure 1 It is a flow chart of the underwater drilling and cutting construction method for reinforced concrete structures of the present invention. The specific work steps include:
[0035] Step 1): Selection of equipment and tools; according to the drilling diameter and the technical requirements of the diamond wire saw, select the appropriate auxiliary equipment; according to the needs of efficient and fast drilling and cutting, select the appropriate drilling device and its equipment;
[0036] Step 2): Erection of construction scaffolding and sand and gravel treatment in the caisson;
[0037] Step 3): Install the special bracket, drilling rig and guide rail on the erected construction scaffold; fix the drilling rig chassis horizontally to the special bracket, and fix the guide rail...
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The invention relates to an underwater drilling and cutting construction method of a reinforced concrete structure. The underwater drilling and cutting construction method comprises the following steps of: firstly, selecting equipment and a machine tool; selecting a proper auxiliary machine tool according to technical requirements of drilling aperture and a diamond wire saw; selecting a proper drilling device and machine accessories thereof according to the requirement of high-efficiency quick drilling and cutting; secondly, carrying out erection on a construction scaffold and gravel treatment in a sink box; thirdly, mounting a special bracket, a drilling machine and a guide rail on the erected construction scaffold; drilling the reinforced concrete structure according to the mounted equipment; drilling within 4-5m once, lifting a drill bit and taking out a concrete core body in a casing until the drilling reaches the preset depth; fixing the diamond wire saw according to the obtaineddrilling hole; cutting a wall body of the reinforced concrete structure according to the fixed diamond wire saw; hoisting the obtained cutting block through a floating crane; removing the drilled andcut dregs; and finishing underground drilling and cutting construction of the reinforced concrete structure.
Description
technical field [0001] The invention relates to drilling and cutting technology, in particular to an underwater drilling and cutting construction method for reinforced concrete structures. Background technique [0002] The traditional underwater structure demolition technology is to cofferdam the structure to be demolished first, drain the water, and then carry out the corresponding demolition work. This technology has disadvantages such as long construction period, high cost, and complicated construction. Concrete residues are generated to pollute the river. [0003] The University of Science and Technology of China proposed the hydraulic blasting method to demolish underwater structures at the 8th China Engineering Blasting Academic Experience Exchange Conference. This method is analyzed and compared on the basis of the current common hydraulic blasting calculation formula, and the correction coefficient of the underwater hydraulic blasting charge calculation formula is p...
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IPC IPC(8): E04G23/08E21B15/02
Inventor 潘鸿宝黄减夏晓兵王群栾福杰
Owner BEIJING FAYAN ENG TECH