Testing method for obtaining rotary jet grouting parameters suitable for rotary jet grouting pile construction environment in laboratory
A technology of construction environment and test method, applied in the field of civil engineering, can solve problems such as inability to construct and test, and achieve the effect of simple structure
Active Publication Date: 2022-01-11
NORTHWEST RES INST CO LTD OF C R E C
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Problems solved by technology
However, the construction equipment of rotary grouting piles are all large-scale equipment, and the construction test cannot be carried out in the laboratory
Method used
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[0020] The present invention will be further described below in conjunction with accompanying drawing:
[0021] The present invention provides a kind of test method that can obtain the jet spray parameters suitable for the construction environment of jet jet piles in the laboratory, specifically according to the following steps:
[0022] 1) Take a test device that includes figure 1 The rotary grouting assembly shown and figure 2 The high-pressure grouting assembly shown, the rotary grouting assembly is used for jet grouting, and the high-pressure grouting assembly is used to input high-pressure mud into the rotary grouting group.
[0023] The rotary grouting assembly includes a hollow casing 15 and a vertically arranged drill rod 1, the upper end of the drill rod 1 passes through the bottom plate of the casing 15, the interior of the casing 15 and the top plate of the casing 15, and protrudes from the top of the casing 15. , the drill pipe 1 is rotatably connected with the ...
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The invention discloses a test method for obtaining jet grouting parameters suitable for a jet grouting pile construction environment in a laboratory. The test method comprises the following steps: (1) preparing a test device for the laboratory; (2) piling holes; (3) performing air tightness detection; (4) performing containing cavity grouting; (5) manufacturing the jet grouting piles; (6) repeating the manufacturing of piles; (7) measuring and calculating the data. The testing device comprises a rotary grouting assembly and a high-pressure grouting assembly, the rotary grouting assembly is used for jet grouting, and the high-pressure grouting assembly is used for inputting high-pressure slurry into the rotary grouting assembly. The device can be used for laboratory jet grouting pile test work, and is simple in structure and convenient to use in a laboratory; besides, the pile spraying operation can be completed at different spraying speeds, drilling rod rotating speeds and drilling rod lifting speeds, so that different rotary spraying pile parameters can be conveniently obtained, the optimal construction data can be determined, and a basis is provided for follow-up site construction.
Description
technical field [0001] The invention belongs to the technical field of civil engineering, and relates to a test method for obtaining parameters suitable for the construction environment of jet grouting piles in a laboratory. Background technique [0002] The rotary grouting pile is to use the drilling rig to drill the rotary grouting pipe and nozzle at the design elevation of the pile bottom, pass the pre-prepared grout through the high-pressure generating device to make the liquid flow obtain huge energy, and spray it from the nozzle near the grouting pipe at high speed It will form a liquid flow with highly concentrated energy, which will directly destroy the soil. During the spraying process, the drill pipe will be lifted while rotating, so that the slurry and the soil will be fully stirred and mixed, and a columnar consolidation body with a certain diameter will be formed in the soil. To strengthen the foundation. The construction is generally divided into two work proc...
Claims
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Login to View More IPC IPC(8): G01M13/00G01M3/26G01D21/02G01P3/00E02D33/00
CPCG01M13/00G01M3/26G01D21/02G01P3/00E02D33/00
Inventor 吴红刚周垣朱宝龙苟海瑞陈晓刚朱兆荣牌立芳张俊德孙浩马至刚王永翔董占林庞伟军李红卫杨昊天常刚王渝鑫张雄伟
Owner NORTHWEST RES INST CO LTD OF C R E C