Large-diameter super-long pile construction method in karst area through full-casing pipe full rotating and rotary drilling

A construction method and full-rotation technology, applied in sheet pile walls, infrastructure engineering, construction, etc., can solve the problems of high overall cost, long construction period, low efficiency, etc., and achieve good environmental protection effect, simple construction, safe and reliable operation. Effect

Inactive Publication Date: 2016-08-24
SHENZHEN HONGYEJI GEOTECHNICAL TECH CO LTD
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  • Application Information

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Problems solved by technology

The current punching pile machine construction and rotary pile machine construction can not meet t...

Method used

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  • Large-diameter super-long pile construction method in karst area through full-casing pipe full rotating and rotary drilling
  • Large-diameter super-long pile construction method in karst area through full-casing pipe full rotating and rotary drilling
  • Large-diameter super-long pile construction method in karst area through full-casing pipe full rotating and rotary drilling

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Embodiment Construction

[0026] 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.

[0027] The specific realization of the present invention is described in detail below in conjunction with specific embodiment:

[0028] In order to improve the efficiency of rock entry and solve problems such as the inapplicability of mud retaining walls in karst areas, the difficulty in the treatment of inclined rock faces and the control of verticality, the frequent occurrence of accidents such as stuck drills and dropped drills in karst caves, the construction method of the present invention can avoid above question.

[0029] The full-casing and full-rotation drilling rig is a new type of drill...

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Abstract

The invention belongs to the technical field of super-long pile construction of engineering construction, and discloses a large-diameter super-long pile construction method in the karst area through full-casing pipe full rotating and rotary drilling. The method comprises the steps of selecting the types of full casing pipes, rotating the installing casing pipes by 360 degrees, pressing the first casing pipe, checking the perpendicularity, alternately using a punching grab hand and an impact hammer, grabbing land rocks through a grab bucket, drilling the casing pipes to the hole bottoms, measuring the hole depth, carrying out hole cleaning for the first time, installing manufactured reinforcement cages, carrying out butt joint on the reinforcement cages, installing manufactured guide pipes subjected to pressure-bearing tests and sealing tests, arranging water isolation bolts, carrying out hole cleaning for the second time, pouring manufactured concrete, measuring the height of the concrete, pulling the guide pipes and the casing pipes sequentially, verifying the perpendicularity and pulling the casing pipes before initial setting of the concrete. According to the method, the pile driving efficiency of projects is improved, and the total cost of the projects is lowered.

Description

technical field [0001] The invention belongs to the technical field of super-long pile construction in engineering construction, and in particular relates to a construction method of a large-diameter super-long pile in a karst area with full-sleeve full-rotation and rotary drilling. Background technique [0002] Pile foundation is a creation of human beings to build buildings on weak foundations. It is the oldest and most basic type of foundation. Due to the high height of high-rise buildings, the foundation must have a certain buried depth from the perspective of structural design. The pile foundation of high-rise buildings usually adopts the pile foundation with large diameter and large buried depth. The geomorphological characteristics of karst areas cause discontinuity of engineering geological conditions, which greatly increases the difficulty of drilling (punching) hole-piercing piles. Compared with foundation construction, it has the characteristics of technical dif...

Claims

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Application Information

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IPC IPC(8): E02D5/38
CPCE02D5/38
Inventor 陈枝东
Owner SHENZHEN HONGYEJI GEOTECHNICAL TECH CO LTD
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