Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for detecting shape of large-diameter vertical shaft hole

A detection method and large-diameter technology, applied in measuring devices, instruments, using ultrasonic/sonic/infrasonic waves, etc., can solve problems such as difficult to effectively detect the shape of large-diameter shaft holes, expand the scope of use, ensure the construction period, and the method is simple Effect

Inactive Publication Date: 2014-05-14
HEBEI CONSTR & INVESTIGATION RES INST
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for detecting the hole shape of a large-diameter shaft in a high-density medium, to solve the problem that it is difficult to effectively detect the hole shape of a large-diameter shaft in the existing hole shape measurement method, and to improve the detection accuracy of the hole shape

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for detecting shape of large-diameter vertical shaft hole
  • Method for detecting shape of large-diameter vertical shaft hole
  • Method for detecting shape of large-diameter vertical shaft hole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] In a shaft project of an iron mine, the diameter of the hole is 5.4m, the net diameter of the shaft is 4.0m, and the depth of the hole is 59.11m. The vertical shaft adopts mechanical graded drilling to form holes, the reinforced concrete shaft wall is permanently supported, and the cement slurry wall is filled to stop water. The real-time detection of the hole shape of the wellbore is detected by an ultrasonic hole shape detector. Since the diameter of the hole designed for this project is 5.4m, and the measurable diameter of the ordinary ultrasonic hole detector used is generally not greater than 4.0m, it is impossible to realize the full well The hole shape detection of wall utilizes the hole shape detection method of the present invention, and the specific implementation process is as follows:

[0026] 1. See figure 1 , with the center point 2 of the wellbore opening as the center of the coordinate circle, two concentric wellbores are set, namely the outer center we...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for detecting a shape of a large-diameter vertical shaft hole. The method for detecting the shape of the large-diameter vertical shaft hole comprises the following steps that the vertical shaft hole is regarded as two concentric shaft holes, the size of the diameter of the inner shaft hole is set, and the inner shaft hole is regarded as a perpendicular shaft hole; the center of the shaft hole is set as the origin of coordinates, a WE direction and an NS direction which are perpendicular to each other are determined on the circumference of the inner shaft hole to serve as coordinate axes, and the four intersection points with the circumference are X, X', Y and Y' respectively and are regarded as detection points; a logging instrument is arranged in a shaft mouth and is adjusted to be level, detection parameters are set, detection probes are lowered at the four detection points of the shaft hole respectively and are maintained to be in a natural sagging state, hole diameter detection is carried out by using ultrasonic waves along with the lowering of the probes, and distance curves of the four points to the wall of the shaft hole are obtained respectively; hole shape detection images formed by the four detection points are spliced in the WE direction and the NS direction, and lastly a complete shaft hole shape image is displayed. The method for detecting the shape of the large-diameter vertical shaft hole is especially suitable for shape detection of holes of large-diameter vertical shafts with high-concentration media.

Description

technical field [0001] The invention relates to a method for detecting the shape of a wellbore by using an ordinary well logging instrument, in particular to a method for detecting the hole shape of a large-diameter shaft in a high-density medium, and belongs to the technical field of large-diameter shaft construction in mines. Background technique [0002] In the construction of mine shaft engineering, the mechanical drilling method is generally used to drill the hole with the mud circulating fluid. The shape of the hole, especially the size of the hole, is one of the main indicators for testing the quality of the hole. At present, when inspecting the hole quality of the shaft wellbore, the detection probe is usually lowered into the hole from the center of the well hole, and the hole shape is detected by ultrasonic waves. Ordinary logging tools for testing generally have their testing range or testing accuracy. When the diameter of the wellbore is large, especially whe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01B17/06
Inventor 聂庆科杨海朋陈福兴杨光孙运青王厚星赵建秋
Owner HEBEI CONSTR & INVESTIGATION RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com