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A construction method for large-volume concrete large-aperture coring in water conservancy and hydropower projects

A technology for mass concrete, water conservancy and hydropower, which is applied in earth-moving drilling, sampling devices, and original core extraction devices, etc., can solve problems such as easy damage, poor working effect of construction equipment, poor sampling effect, etc. Effect

Active Publication Date: 2022-07-01
SINOHYDRO ENG BUREAU 4
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Generally speaking, the pursuit of a concrete core sample that is as complete, continuous, and unbreakable as possible is the ideal for large-aperture drilling and coring of concrete. It is a fundamental requirement to avoid damage to the core sample due to human factors and mechanical factors. However, the current sampling The construction method and construction equipment have poor working effect, are easy to be damaged during specific use, and the sampling effect is not good

Method used

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  • A construction method for large-volume concrete large-aperture coring in water conservancy and hydropower projects

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Embodiment Construction

[0052] The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0053]Unless otherwise defined, the technical or scientific terms used in the embodiments of the present application shall have the ordinary meanings understood by those with ordinary skill in the art. "First", "second" and similar words used in this embodiment do not denote any order, quantity or importance, but are only used to distinguish different components. "Comprises" or "comprising" and similar words mean that the elements or things appearing before the word encompass the elements or ...

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Abstract

The invention relates to a construction method for large-diameter coring of large-volume concrete in water conservancy and hydropower projects, including construction preparation, measurement of hole placement, leveling and stability of a drilling rig, drilling through holes, snap-ring to lift and break core samples, core sample extraction, Move save. The method of the invention can ensure the quality of coring, and ensure that the core sample faithfully reflects the accuracy of the inspection of the pouring quality of the dam concrete at the coring position. At the same time, the construction method can be applied and popularized by related similar projects at home and abroad, and has a good social benefit.

Description

technical field [0001] The invention relates to a large-aperture coring construction method, in particular to a large-aperture concrete large-aperture coring construction method for water conservancy and hydropower projects, belonging to the fields of hydropower stations and water conservancy projects. Background technique [0002] Concrete engineering is an important engineering project for hydropower stations (dams, reservoirs, mass concrete). Whether the quality of concrete pouring meets the engineering standards, on the one hand, the quality control of each process in the construction process is carried out to make the process quality meet the engineering standards; on the other hand, special methods are used. Carry out quality inspection, such as drilling and coring, pressurized water inspection, sound wave inspection, etc. to comprehensively evaluate its quality. The quality of the concrete core samples taken out will directly affect the comprehensive evaluation of the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B25/00E21B25/10G01N1/08
CPCE21B25/00E21B25/10G01N1/08
Inventor 李猛胡艳军史广生许珍
Owner SINOHYDRO ENG BUREAU 4