Technology method of artificial frozen soil control blasting by deep surface forzen method

A technology of artificial frozen soil and controlled blasting, applied in blasting and other directions, can solve the problems of high labor intensity of workers, difficulty in manual excavation, and difficulty in excavation, and achieve the effect of reducing unit consumption of explosives, reducing labor intensity of workers, and being beneficial to safety.

Inactive Publication Date: 2005-01-05
马芹永
View PDF0 Cites 38 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manual excavation of the working face is very difficult, the footage of a shift is 200mm, the labor intensity of the workers is very high, and the efficiency is extremely low
It can be seen that the freezing of the frozen section of the wellbore reduces the deformation of the frozen wall, improves the strength of the frozen soil and the stability of t

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
  • Technology method of artificial frozen soil control blasting by deep surface forzen method
  • Technology method of artificial frozen soil control blasting by deep surface forzen method
  • Technology method of artificial frozen soil control blasting by deep surface forzen method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Hereinafter, the present invention will be described in detail through engineering embodiments and the accompanying drawings.

[0025] Project Overview

[0026] A coal mine is a vertical shaft development. The net diameter of the main shaft is 4.5m. The shaft passes through the Quaternary surface soil layer with a thickness of 289m. The surface soil section is constructed by the freezing method with a freezing depth of 320m. The upper excavation wasteland has a diameter of 6.1m. When the shaft is driven to a depth of 110m, the full section of the shaft is frozen and solid. Because of the white-gray calcareous clay layer between the depth of 100 and 150m, the strength of this layer of soil is very high after freezing. At that time, the average temperature of the well side was -9°C, and there was very little deformation of the well side. It is very difficult to excavate the working face manually. The footage of a shift is 200mm, the labor intensity of the workers is very high...

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 relates to a process method for manual frozen soil control blast with deep and thick surface freezing method; one or several circles of slot carving apertures are arranged in the centre of the cylinder which is frozen; a circle of side apertures is arranged on the excavation wild path, the around apertures are distributed evenly, at least one circle of assistant apertures are arranged between the peripheral apertures and the slot apertures; the slot aperture uses powder filling inner micro difference blast divided into upper and subjacent two parts.

Description

Technical field [0001] The invention relates to a deep and thick topsoil freezing method for sinking technology, specifically, a deep thick topsoil freezing method to construct artificial frozen soil controlled blasting. Background technique [0002] In 1883, the German engineer F.H. Poetsch used the freezing method to excavate a shaft with a depth of 103m in the Albarid coal mine in Germany, and obtained the patent for the freezing method. After that, the technology spread to many countries in the world. In 1955, my country used the freezing method to excavate the Kailuanlin West ventilation shaft with a net diameter of 5m and a freezing depth of 105m. After that, Chinese scientists and technicians began to study the freezing method of sinking technology. In the past 50 years, fruitful research results have been achieved. A total of more than 430 freezing projects have been built, including the Huainan Pansandong air shaft with a maximum freezing depth of 415m in the 1980s and C...

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
IPC IPC(8): F42D1/00F42D3/00
Inventor 马芹永
Owner 马芹永
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap