Initiation state inspection method of exploder for simulating high G value test of centrifuge

Abstract

The invention discloses an initiation state inspection method of an exploder for simulating a high G value test of a centrifuge. The method comprises the steps of establishing an explosion test devicefor a series of explosion tests under conditions of different explosive loads Wi, explosive load submersion and air pressure equivalent water column heights, measuring a shock wave peak Pmi and a bubble pulsation period Ti of underwater explosion of the ith test, performing fitting operation with a theoretical formula to form an equivalent explosive load coefficient n, and further providing an initiation state of an explosive and a detonator. According to the method, data of the measured shock wave peak and the bubble pulsation period are compared with data of the empirical formula; a least square fitting result is processed, so that the equivalent explosive loading coefficient and an equivalent explosive quantity are obtained; judgment and inspection of the initiation state of the explosive are achieved; the underwater explosion test of the centrifuge is simulated actually; and the method has the characteristics of good convenience, stability and reliability.

Description

technical field [0001] The invention belongs to the field of explosion container design, and relates to an explosion device resistant to deep water pressure used in underwater explosion tests of centrifuges. Background technique [0002] Once large-scale dams are damaged by explosions during wartime, multiple water conservancy projects will collapse, which will cause huge personal injuries and economic losses. Therefore, the research on anti-blast safety of dam engineering has very important theoretical guiding significance for minimizing losses and evaluating dam safety. Due to limited funds and sites, it is difficult to obtain the damage mechanism of large-scale dams under the action of blast loads through prototype blast tests; it is also difficult to truly reveal the mechanical behavior and failure process of blast prototypes by traditional structural model tests. The geotechnical centrifuge increases the gravity of the model through high-speed rotation, so that the mod...

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Problems solved by technology

Due to limited funds and sites, it is difficult to obtain the damage mechanism of large-scale dams under the action of blast loads through prototype blast tests; it is also difficult to truly reveal the mechanical behavior and failure process of blast prototypes by traditional structural model tests

The geotechnical centrifuge increases the gravity of the model through high-speed rotation, so that the model medium body produces a self-weight stress similar to that of the prototype. The deformation and failure mechanism of the model are similar to the prototype, so that complex geotechnical engineering and dynamic problems can be simulated. One of the commonly used methods in mechanics, but its expensive cost and test costs have limited its large-scale promotion and use.

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