Method for detecting and identifying blind shot for blasting chambers

Abstract

The invention discloses a method for detecting and identifying a blind shot for blasting chambers. The method comprises the following specific steps of: determining the number of the charged chambers and the number of signal transmitting points; arranging underground electromagnetic signal transmitters in the charged chambers, and setting the transmitting frequency, start-to-transmit time, transmitting interval and duration parameters of the underground electromagnetic signal transmitters; enabling one charged chamber and an electromagnetic signal parameter of one underground electromagnetic signal transmitter to be in one-to-one correspondence; and detecting the blind shot for the chambers after blasting, adopting an electromagnetic signal receiver to receive electromagnetic signals at different frequencies, determining the non-blasting chambers according to the received frequencies, and proving that the chambers without receiving of frequency signals are completely detonated. The method disclosed by the invention has the following advantages: 1) according to the method, the technical problem in detecting and identifying the blind shot for the chambers is solved, the method for inspecting the blind shot for the chambers by human experience is changed, and the reliability is high; and 2) the method has the advantages of simplicity in operation, high detection speed, low price, high precision, intrinsic safety in equipment and strong applicability.

Description

technical field [0001] The invention relates to a detection and identification method of chamber blasting blind shot, which is especially suitable for detecting and identifying undetonated explosive chambers after chamber blasting, so as to eliminate the safety hazard of chamber blasting blind shot. Background technique [0002] In my country, after the rapid development of the second half of the last century, the chamber blasting technology has been widely used in mine stripping blasting, cushion blasting from open pit to underground, edge blasting in alpine open pit mines, leveling site blasting, blasting of mining graded stone, Directional blasting for damming, excavating road cuttings, building embankments, underwater blasting and large-scale cofferdam blasting, etc. In the extensive practice of chamber blasting engineering, blasting workers have concluded that chamber blasting has four major characteristics: multiple, fast, good, and economical. Wanfang rock; "fast" mea...

AI Technical Summary

Problems solved by technology

[0003] Although chamber blasting has four obvious advantages, it also has some disadvantages. Due to the large amount of charge in chamber blasting, once blind blasting occurs, it will have a serious impact on the safety of personnel and equipment and the construction progress.

At present, the identification and detection of blind shots in chambers at home and abroad are only at the level of human subjective judgment, and there is no special technology and equipment for scientific detection and identification of blind shots

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