A method for circular grouting of dam body joints
A dam body and slurry technology, applied in water conservancy projects, marine engineering, construction and other directions, can solve the problems of large amount of grouting discarded in joints, waste of slurry environment, pollution, etc., to solve waste, good economic and social benefits, and convenient. construction effect
Inactive Publication Date: 2015-12-09
HUBEI GEZHOUBA TESTING
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[0019] A circular grouting method for joints of a dam body, comprising: a grout inlet pipe 1, a grout return pipe 2, an exhaust pipe 3, a grout outlet box 4, an exhaust groove 5, and a grout raising pipe 6.
[0020] Include the following steps:
[0021] The grout inlet pipe 1, the grout return pipe 2, the exhaust pipe 3, the mixing tank 9, and the grouting pump 10 are connected to form a circulation loop; and a control valve 7 and a pressure gauge 8 are installed at each grouting nozzle. details as follows.
[0022] 1. If image 3 As shown, each grouting area is equipped with two sets of grouting assemblies, each grouting pipe 1, each grouting return pipe 2, and each exhaust pipe 3 constitute a set of grouting assemblies, and each set of grouting assemblies is separately installed on the joint surface. Water check. The purpose is to thoroughly check the patency of each group of pipelines themselves and the patency of the seam surface. The water inspection pressure is gener...
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A dam body joint circulation grouting method comprises slurry inlet pipes, slurry return pipes and exhausting pipes, wherein the slurry inlet pipes, the slurry return pipes, the exhausting pipes, a stirring barrel and a grouting pump are connected into a circulation loop, each slurry pipe, each slurry return pipe and each exhausting form a set of grouting assembly, and two sets of grouting assemblies are arranged in each grouting area. Drainage detection is conducted to the grouting assemblies in each grouting area, after the drainage detection is completed, one slurry inlet pipe which is relatively good in flowing performance is selected from the two sets of grouting assemblies of each grouting area to be connected with the grouting pump and provided with a valve and a pressure gauge, and other five pipes are connected with the stirring barrel for slurry return. After grouting is started, normal position secondary configuration is conducted to slurry returning to the stirring barrel, the required slurry water cement ratio is configured, and the slurry is grouted into dam body joints from the stirring barrel to form circulation grouting. The dam body joint circulation grouting method changes a traditional method of interval blowing type joint grouting, and reduces probability of joint surface blocking and pipe accidents.
Description
technical field [0001] The invention discloses a dam body joint circulation grouting method, which is applicable to the field of various concrete dam body joint grouting constructions. Background technique [0002] The hydraulic dam is poured in columnar joints. Those parallel to the dam axis are called longitudinal joints, and those perpendicular to the dam axis are called transverse joints. The longitudinal joints are unfavorable to the stress and stability of the dam body, and the design requires cement grout to be used for grouting. The transverse joints are generally not grouted except for concrete gravity arch dams or arch dams that require grouting as a whole. The purpose of grouting is to pour the cementitious material into the joints of the dam body through the pipeline, so that it can be evenly distributed, cement the dam body into a whole joint, and transfer stress to ensure the stability and safe operation of the dam body. [0003] The key to the success of gro...
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IPC IPC(8): E02D15/02E02B3/16
Inventor 余英李焰李建斌刘显斌
Owner HUBEI GEZHOUBA TESTING