Drilling pouring pile hole formation one-pile double-machine construction method

A technology of bored piles and construction methods, which is applied in the direction of drilling equipment and methods, rotary drilling rigs, drilling equipment, etc., can solve the problems of long hole forming time, slow drilling progress, poor hole quality, etc., and achieve reduction The cost of forming holes, reducing power consumption, and the effect of simple methods

Active Publication Date: 2010-05-26
江苏扬建集团有限公司 +1
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Problems solved by technology

However, under complex geological conditions, especially under the geological conditions where the upper layer is ordinary soil and the lower layer is hard rock, it is difficul...

Method used

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Embodiment Construction

[0012] 1Construction preparation

[0013] Measurement, positioning and setting out: according to the general plan, coordinates and elevation reference points, measure and place the axis, pile position and elevation control points according to the drawings. Buried casing: The surroundings of the steel casing are filled with clay, the top is about 0.2m above the ground surface, and the center line is allowed to deviate 5cm. The pile driver is in place: the rotary drilling rig is in place, the frame is straight and the base is stable. The center of the main drill disc should be aligned with the pile position, the verticality deviation < 1%, and the centering deviation < 1cm. Preparation of mud: The upper part of the clay is dry and can be lubricated with a small amount of water. The hard plastic clay layer is drilled with raw soil to make slurry and used for drilling into rock formations.

[0014] 2 Rotary drilling rig construction

[0015] The upper clay is drilled with a rot...

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Abstract

The invention discloses a drilling pouring pile hole formation one-pile double-machine construction method, comprising the following steps: both an upper clay layer and a completely weathered rock layer use a rotary drilling rig to drill; the rotary drilling rig at a pile position is mounted; a cutting tool for is welded on the drilling bucket edge of the rotary drilling rig, and is driven by the rotation of a telescopic drilling stem to cutting the soil layer rotatablely. The rotary drilling rig can drill in dry soil or drill with slurry. When reaching a strong or middle weathered rock layer, the rotary drilling rig is replaced to a gyration drilling rig; a special alloy roller drill is mounted on the gyration drilling rig; a forward or backward circulation drilling process is utilized; mortar circularly protects the wall; the drilling operation is executed until the designed hole depth is reached; and an air compressor is used for clearing the hole or the mortar replacement is used for clearing the hole. The method of the invention is simple, economic and practical; besides, the method also improves 50 percent of the drilling speed, shortens the hole formation time, lowers the hole formation cost, decreases the power consumption, saves the energy, reduces the discharged mortar, reduces the environmental pollution, and improves the hole formation quality and the quality of pile foundation constriction of the integral building work.

Description

technical field [0001] The invention relates to a bored pile hole-forming construction method for pile foundation construction in construction engineering, and belongs to the technical field of construction. Background technique [0002] In modern construction projects, it is often necessary to treat foundations and foundations. Bored piles are widely used in various construction engineering fields due to their strong adaptability, low cost, and easy construction. There are many factors that affect the construction quality of cast-in-place piles, such as the construction method of bored piles, retaining walls, pouring, etc. If the hole-forming method is improper, it will affect the construction progress and quality. The existing bored pile construction adopts a drilling rig to form holes all the time until the pile foundation construction is completed. However, under complex geological conditions, especially under the geological conditions where the upper layer is ordinary ...

Claims

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Application Information

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IPC IPC(8): E21B3/00E21B7/00
Inventor 于金涛
Owner 江苏扬建集团有限公司
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