Method for detecting chemical weapons abandoned by Japan and buried in land

Abstract

The invention belongs to the technical field of geophysical exploration, relates to a method for detecting chemical weapons abandoned by Japan and buried in land, and is suitable for detecting single-shot or multi-shot chemical weapons which are abandoned by Japan and buried in various depths. The method comprises nine steps of arranging a metal detection work area, carrying out metal detection and marking a shell reaction point, excavating and removing a shell in an excavating while detecting manner, arranging a magnetic method detection work area, carrying out magnetic method detection data acquisition, analyzing a magnetic method detection result, determining the analyzed result, excavating while detecting by using a metal detector and excavating to remove a magnetic anomaly point, and excavating and thoroughly confirming detection. A known shell the buried depth of which is no more than 1 meter and the surface of which is free of metal object interference, a known shell the buried depth of which is more than 1 meter and the surface of which is free of metal object interference, and an area where the surface of a shell is provided with strong metal object interference are distinctively excavated. The method for detecting the chemical weapons abandoned by Japan and buried in land is advantaged by being high in sensitivity, high in safety, high in detection result accuracy, timeliness and reliability and the like.

Description

technical field [0001] The invention is used to detect single-shot or multiple-shot Japanese abandoned chemical weapons buried on land at various depths (hereinafter referred to as "Japanese abandoned chemical weapons"), and belongs to the technical field of geophysical exploration. Japan's ACW is small in size, and the detection object of the present invention is a small target object. This is a difficult problem in the field of geophysical prospecting, and there is no technical method for reference at home and abroad. The present invention fills the gap in this technical field through technology integration innovation and technology application research, and provides technical means for eradicating the poison of Japan's abandoned chemical weapons and purifying the country. social and economic benefits. Background technique [0002] When Japan surrendered in World War II, it abandoned millions of pieces (pieces) of chemical weapons all over China. Since the Japanese gover...

AI Technical Summary

Problems solved by technology

However, there are two main reasons that restrict the application of this technology: one is that sometimes a strong pulse current is emitted, which is dangerous to the bomb with fuze. For the Japanese abandoned chemical weapons filled with picric acid and TNT explosives, the pulse current is absolutely forbidden

The second is that Japan's abandoned chemical weapons are made of iron, which should have low resistance in theory. However, in 2000, during the detection of the buried sites of Japan's abandoned chemical weapons in Bei'an, it was found that it did not conform to the theory and did not have the expected low resistance.

The analysis may have the following reasons: Japan’s abandoned chemical weapons have been buried underground for a long time, and the surface of the projectile body has been corroded seriously, which reduces its electrical conductivity; secondly, the conductivity of the buried ammunition as a whole is also reduced due to the gap between the buried ammunition and other media; In addition, part of the ammunition was put into wooden boxes and then buried. The existence of wooden boxes hindered electrical conduction; electromagnetic wave imaging and resistivity imaging were used to detect Japanese abandoned chemical weapons, which was very dangerous, and the research was immature, so inversion and interpretation were very difficult; Inductive electrical method (transient electromagnetic method), poor anti-interference ability, high cost, low efficiency, and a lot of experiments are not satisfactory

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