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High pressure rotary jet grouting pile process combining PVC pipe and rotary jet grouting drill bit thereof

A technology of high-pressure rotary grouting piles and PVC pipes, which is applied in the direction of foundation structure engineering, sheet pile walls, earthwork drilling and mining, etc. It can solve problems such as water accumulation in foundation pits, inconvenient construction, and large geological particles, so as to improve construction efficiency and improve Work efficiency, water reduction effect

Inactive Publication Date: 2019-11-05
ZHEJIANG CONSTR ENG GRP CO LTD
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Problems solved by technology

[0003] In order to make better use of space when building high-rise residential quarters, a basement will be dug under the high-rise residential area. After the basement pit is dug, groundwater will easily seep into the foundation pit, resulting in water accumulation in the foundation pit. The pumping treatment of the foundation pit brings inconvenience to the construction, and the geological particles in some areas are relatively large, which may easily cause the high-pressure rotary grouting pile itself to be unable to penetrate the round gravel layer

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  • High pressure rotary jet grouting pile process combining PVC pipe and rotary jet grouting drill bit thereof
  • High pressure rotary jet grouting pile process combining PVC pipe and rotary jet grouting drill bit thereof

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] A kind of high-pressure rotary spraying pile technology combined with PVC pipe, comprising the following steps,

[0036] (1) Exploration geology. During geological exploration, the particle size of the round gravel layer is judged according to the local excavation situation on site. If there are larger stones in the round gravel layer, it is necessary to carry out the high-pressure jet jetting pile process by this method; If the particles of the pebble layer are small, high-pressure jet jetting can be directly carried out through the jet jet drill.

[0037] In this embodiment, the results of geological exploration are,

[0038] 1st layer, plain fill (mlQ4): yellow-gray, gray-yellow, loose, its composition is mainly cohesive soil and coarse sand, with a small amount of gravel in some parts, the particle size of the gravel is generally between 3 and 50mm, and it ...

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Abstract

The invention relates to a high pressure rotary jet grouting pile process combining a PVC pipe. The high pressure rotary jet grouting pile process comprises the following steps: (1) carrying out geological exploration; (2) guiding a hole by a hole guiding tool and putting the PVC pipe in the hole; (3) carrying out rotary jet grouting to cut the PVC pipe; (4) carrying out rotary jet grouting construction preparation; and (5) carrying out high pressure rotary jet grouting pile construction. The PVC pipe is paved before a rotary jet grouting drill bit is laid down, so that the rotary jet groutingdrill bit can penetrate a roundstone layer with relatively large particles conveniently, and the rotary jet grouting drill bit carries out high pressure jet grouting conveniently. The high pressure rotary jet grouting pile process can solve a water seepage problem of a foundation pit and improves the construction efficiency.

Description

technical field [0001] The invention relates to a high-pressure jet-jet pile technique, in particular to a high-pressure jet-jet pile technique combined with a PVC pipe and a jet-jet drill bit. Background technique [0002] The advantage of high-rise housing is that it can save land and increase housing and resident population. For example, building a six-storey residence on the same foundation and building a 12-storey residence can double the land utilization rate, housing and resident population. Especially in areas with high population density and building density in our country, the cost of demolition is very high, and the work of mobilizing the population to relocate is very difficult, but the contradictions in various aspects can be better resolved by building high-rise residential buildings. [0003] In order to make better use of space when building high-rise residential quarters, basements will be dug under high-rise residential buildings. After the basement pits ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/46E21B29/00
CPCE02D5/46E21B29/00
Inventor 叶圣元顾伟华万历裘园高源张宏帆张丽红黄黎红谢军王炀李沐纱
Owner ZHEJIANG CONSTR ENG GRP CO LTD
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