Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for measuring the matching relationship between deep hole blasting explosive and rock on site

A deep hole blasting and on-site measurement technology, which is applied in the direction of measuring devices, measuring propagation velocity, measuring mechanical impedance, etc., can solve the problems of explosive error amplification and difficulty in satisfying fine blasting, and achieve accurate test results

Active Publication Date: 2019-07-30
HONGDA MINING IND
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The detonation velocity of the above-mentioned explosives is too small and the sound velocity of the rock is too high, resulting in the error amplification of the wave impedance ratio between explosives and rocks, which is difficult to meet the requirements of fine blasting

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
  • A method for measuring the matching relationship between deep hole blasting explosive and rock on site

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Open-pit mines are generally mined in the form of steps. During the mining process, the working face is constantly moving closer to the side and extending to the depth. Each working face is divided into blasting areas, and production is organized according to the technological sequence of drilling, blasting, excavation, transportation, and platooning. Generally, after a blasting area is blasted, the blasting of the adjacent blasting area at the same step level or the blasting area in front of the next step side is often arranged immediately after.

[0047] Such as figure 1 As shown, the explosive detonation velocity and the sound velocity of the rock mass are measured through the explosion of the explosive 2 loaded in the blast hole 1 of the normal step blasting construction. The detonation velocity detecting device 5 is located in the charging section on the top of the detonating device 3, and it is processed by the network cable 6; during processing, at first 1 to 2 ...

Embodiment 2

[0058] The method for on-site measurement of the matching relationship between explosives and rocks in deep hole blasting in this embodiment uses the mine blasting construction site to measure the detonation velocity of explosives and the sound velocity of blasting rock mass, so as to predict the wave impedance matching relationship between explosives and rocks in subsequent blasting areas, and provide convenient and quick guidance. Optimal design of the blasting scheme to achieve the purpose of making full use of the explosion energy of explosives to do work and break the rock mass. The main implementation methods and steps are as follows:

[0059] 1) Selection of test blast hole: select the first blast hole (first detonation blast hole) in the blast area as the test blast hole, and the explosion of the explosive in the test blast hole is used as the source of vibration to ensure that the vibration signal reaching the vibration measurement point is transmitted from the blast ar...

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 field measurement method of the matching relationship between deep hole blasting explosives and rocks. The method comprises the following steps: measuring the detonation velocity of an explosive in a test blasting hole using a detonation velocity detection device made of network cables; with explosion of the explosive in the test blasting hole as a source and through two vibration measuring instruments arranged adjacent to the lower middle of the stepped slope of a blasting area at the same level as the blasting area and two vibration measuring instruments arranged in the lower middle of the stepped slope of the blasting area in lateral front of next step, acquiring the surrounding rock vibration signals of vibration measuring points corresponding to the vibration measuring instruments, and acquiring the sound velocity of rock masses adjacent to the blasting area at the same level and the sound velocity of rock masses in the blasting area in lateral front of next step; and acquiring the matching relationship between the explosive and rocks in a specific blasting area according to the detonation velocity of the explosive in the test blasting hole, the sound velocity of rock masses adjacent to the blasting area at the same level and the sound velocity of rock masses in the blasting area in lateral front of next step. The matching relationship between explosives and rocks measured by the method of the invention can be quickly fed back to blasting engineers for optimally designing and adjusting the blasting scheme.

Description

technical field [0001] The invention relates to a method for measuring the matching relationship between explosives and rocks, in particular to a method for on-site measuring the matching relationship between explosives and rocks for deep hole blasting, and belongs to the technical field of engineering blasting. Background technique [0002] It is generally believed that when the wave impedance of the explosive matches that of the rock, the energy transmitted by the explosive to the rock is the most, and the strain value induced in the rock is the largest, and a better blasting effect can be obtained. In order to obtain the matching condition of explosive and rock wave impedance, four physical quantities of explosive density, explosive detonation velocity, rock density and rock sound velocity need to be measured respectively. In general, explosive density and rock density can be obtained by weighing and volume measurement, explosive detonation velocity is often measured by r...

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 Patents(China)
IPC IPC(8): G01H15/00G01H5/00
CPCG01H5/00G01H15/00
Inventor 崔晓荣郑炳旭林谋金江旭光李战军宋锦泉
Owner HONGDA MINING IND