Automatic repeated impact excitation device for simulating blasting vibration effect

Abstract

The invention relates to an automatic repeated impact excitation device for simulating a blasting vibration effect. The device comprises a gas storage tank, a launching gas storage chamber, a bullet,a mechanical automatic gas valve, a gas valve, a launching pipeline, a bullet bayonet, a one-way electromagnet, a gas pressure sensor and a monitoring control device. The gas storage tank is communicated with the launching gas storage chamber through a connecting pipeline; the mechanical automatic gas valve is arranged in the connecting pipeline; the launching gas storage chamber is provided witha launching port, one end of the launching pipeline is communicated with the launching port, and the gas valve is arranged on the launching port; the bullet bayonet is arranged at the position, closeto the launching port, in the launching pipeline and clamps the bullet; the one-way electromagnet is arranged close to the bullet bayonet; and the air pressure sensor is arranged on the launching airstorage chamber. The device can accurately control the air pressure, automatically recover bullets, ensure that the bullets do not deviate in the radial direction in the shooting process and reduce the energy loss of the bullets in the shooting process.

Description

technical field [0001] The invention relates to the technical field of blasting vibration experimental instruments using the Hopkinson pressure rod technology, in particular to an automatic repetitive impact excitation device for simulating blasting vibration effects. Background technique [0002] Blasting vibration is one of the main factors affecting slope stability. To study how blasting vibration affects slope stability is of decisive significance to ensure the long-term safety and stability of major projects. Due to the particularity of blasting vibration, indoor experiments are usually used to simulate the process of blasting vibration in the research process. [0003] In the existing indoor experimental research, the blasting vibration effect is mainly simulated by using the Hopkinson compression rod technology. However, the existing Hopkinson pressure bar excitation device mainly has the following problems: [0004] 1. It is necessary to manually adjust the air pre...

AI Technical Summary

Problems solved by technology

[0005] This application provides an automatic repetitive impact excitation device that simulates blasting vibration effects, which solves or partially solves the technical problems that the existing technology cannot control the bullet firing rate, the bullet launch path is prone to deviation, and the bullet cannot be automatically recovered; Control the air pressure, can automatically recover the bullet, ensure that the bullet does not deviate radially during the firing process, and reduce the energy loss of the bullet during the firing process.

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