Preconditioning process of continuous wall for weak weathering terrane grooving construction

A trough-forming construction and micro-weathering technology, which is applied to sheet pile walls, foundation structure engineering, excavation, etc., can solve the problems of delay in construction period, easy-to-damage impact hammers, stuck hammers, etc., increase costs, facilitate slag discharge, and improve construction quality effect

Inactive Publication Date: 2009-11-25
GUANGZHOU NO 2 MUNICIPAL ENG CO LTD
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AI Technical Summary

Problems solved by technology

[0002] In the construction of the engineering foundation pit enclosure structure, hard rock formations are often encountered. If the conventional construction method is adopted, the pilot hole is formed by punching the hammer and then the groove is formed. There are quite a lot of problems, especially in inclined rocks, sudden hardening, faults and other special areas, firstly, the progress is slow, secondly, the impact hammer is easy to be damaged, and phenomena such as hammer jamming, partial hole and hole collapse often occur.
It not only brings many problems to the project construction, but also causes delays in the construction period.

Method used

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  • Preconditioning process of continuous wall for weak weathering terrane grooving construction
  • Preconditioning process of continuous wall for weak weathering terrane grooving construction
  • Preconditioning process of continuous wall for weak weathering terrane grooving construction

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Embodiment Construction

[0017] Such as figure 2 As shown, the implementation steps of the pretreatment process of the diaphragm wall in the groove construction of the micro-weathered rock formation are:

[0018] First, make the following construction preparations:

[0019] 1. Before the pre-drilling construction of the diaphragm wall, the geological conditions of the project should be understood in detail, a special construction plan should be prepared, and the process design should be carried out according to the selected construction machine.

[0020] 2. Clean up the construction platform, remove ground obstacles, and determine the working surface according to the required location of mechanical equipment.

[0021] 3. Measure and locate, determine the center line according to the design pile position, make a mark, and determine the pretreatment hole positions of the main guide hole and the auxiliary guide hole according to the position of the pile center line.

[0022] 2. Drilling rig

[0023] ...

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Abstract

The present invention provides a preconditioning process of a continuous wall for the weak weathering terrane grooving construction, firstly determining a main guide hole and an assistant guide hole, then implementing a prepared hole to the main and the assistant guide holes during the construction process of each weak weathering rock geologic continuous wall, then diving into the guide holes, and grabbing a groove by using a hydraulic crab bucket grooving machine, and then enciphering the grooving hole, finally grooving by repairing the groove through the hydraulic crab bucket grooving machine. The process of the invention is capable of improving the construction quality greatly and avoiding a plurality of difficulties of punching the rock and forming the hole, thus it is capable of ensuring the continuous wall to be completed in a prospective time, and providing a golden and well-knit foundation for a pressing engineering construction period.

Description

technical field [0001] The invention relates to a construction technology for an engineering foundation pit enclosure structure in the field of civil engineering, in particular to a technique for increasing the trenching speed when a hard rock layer is encountered during the trenching construction of an underground diaphragm wall. Background technique [0002] In the construction of the engineering foundation pit enclosure structure, hard rock formations are often encountered. If the conventional construction method is adopted, it is to use a hammer to form a guide hole and then form a groove. There are quite a lot of problems, especially in special areas such as inclined rocks, sudden hardening, and faults. The first is that the progress is slow, and the second is that it is easy to damage the impact hammer, and there are often phenomena such as hammer jamming, partial hole, and hole collapse. It not only brought many problems to the project construction, but also caused de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/06E02D5/18
Inventor 司海峰胡继生李勇锋赵小浪招光明彭琦李爱涛
Owner GUANGZHOU NO 2 MUNICIPAL ENG CO LTD
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