A construction method of bored pile casing in highly pressure-bearing fractured water formation

A technology of bored piles and construction methods, applied in sheet pile walls, infrastructure engineering, construction, etc., can solve the problems of inconvenient recycling of casings, reduce construction costs, prevent pile holes from collapsing, and balance water head pressure. Effect

Active Publication Date: 2022-03-22
SHENZHEN MUNICIPAL ENG
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Problems solved by technology

[0005] The purpose of the present invention is to provide a construction method for bored cast-in-situ pile casings in high-pressure fissure-water formations, aiming to solve the problem in the prior art that it is inconvenient to recover the casing after the construction of cast-in-situ piles is completed

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  • A construction method of bored pile casing in highly pressure-bearing fractured water formation
  • A construction method of bored pile casing in highly pressure-bearing fractured water formation
  • A construction method of bored pile casing in highly pressure-bearing fractured water formation

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] The implementation of the present invention will be described in detail below in conjunction with specific embodiments.

[0032] In the drawings of this embodiment, the same or similar symbols correspond to the same or similar components; The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orien...

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Abstract

The invention relates to the technical field of cast-in-place pile construction, and discloses a construction method for bored cast-in-place pile casings in high pressure-bearing fissure water strata, which includes a foundation pile at a set position, a pressure-bearing fissure water layer in the soil layer, and For the cylindrical casing, the specific construction steps are as follows: (1) Investigate the soil layer at the position of the foundation pile, and know the depth and thickness of the water layer of the pressure-bearing fissure in advance; (2). (3) Drill the first pile hole, the depth of the first pile hole is less than the depth of the water layer of the pressure-bearing fracture; (4), lower the casing along the first pile hole until the casing touches the second (5), apply pressure to the casing, so that the casing penetrates the water layer of the pressure-bearing fracture; (6), drill the second pile hole vertically downward from the bottom of the first pile hole until the second pile hole The sum of the depths of the first pile hole and the second pile hole reaches the design total depth.

Description

technical field [0001] The patent of the present invention relates to the technical field of cast-in-place pile construction, in particular, to a construction method for bored cast-in-place pile casings in highly pressure-bearing fissure water formations. Background technique [0002] The construction technology of bored piles is a concrete technology with low construction cost, simple construction operation, no vibration, noise and soil squeezing effect; at present, the construction technology of bored piles has been widely used in the field of construction engineering, and a large number of practical cases It shows that bored cast-in-situ piles have high safety and strong stability, that is, the concrete grout penetrates deep into the soil layer, which can make the soil layer and the cast-in-place pile body closely combined, so that the foundation is more firm and reliable, and the pouring at the same time The pile can effectively control the settlement of the foundation, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/68E02D7/20
CPCE02D5/68E02D7/20
Inventor 欧阳枧龙桂华梁世缪忠尚罗伟欧桦张炳东林璇刘正雄黄文春王嵩邓亚军朱心龙罗燕山
Owner SHENZHEN MUNICIPAL ENG
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