Large-equivalent underground explosion effect simulation device

Abstract

The invention discloses a large-equivalent underground explosion effect simulation device. The device comprises a container, a vacuumizing device connected with the container as well as an explosion source device, wherein the explosion source device comprises a pressurizing device, a piston cylinder, a first piston, an elastic piece, a seal ring, a second piston, a barrel, a diaphragm, a housing,marbles, a pressure relief switch, a glass cover covering the barrel and an air pressure regulating device connected with the glass cover; the piston cylinder is connected with the barrel; the top ofthe barrel is connected with the housing; emission holes filled with the marbles are formed in the housing; the second piston is arranged in the barrel; the diaphragm is arranged at the upper end of the barrel; the first piston is located in the piston cylinder; the elastic piece is arranged at the lower end of the first piston, the seal ring is arranged between the upper end of the first piston and the piston cylinder; the lower end of the first piston divides the piston cylinder into two cavities; an air hole for communicating the two cavities is formed in the lower end of the first piston,and a first check valve is arranged in the air hole; the pressurizing device is communicated with the lower cavity of the piston cylinder; the piston cylinder is connected with the pressure relief switch. The device is safe and controllable.

Description

technical field [0001] The invention belongs to the field of underground protection engineering construction and protection technology and engineering blasting research, and particularly relates to a large-equivalent underground explosion effect simulation device. Background technique [0002] With the successful application of various blasting technologies in the fields of transportation, water conservancy and hydropower engineering construction, energy and mineral resources exploration and development, and disaster prevention and mitigation of geological disasters, the scale of engineering blasting has continued to expand. A large number of blasting practices have shown that when increasing the scale of underground explosions, the role of gravity in the formation of the throwing crater must be considered. A simulation device for large-equivalent underground explosion effects considering the influence of gravity must be developed, which can accurately simulate the undergroun...

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Problems solved by technology

However, due to the need to use dangerous and explosive items such as electric detonators and detonating cords in this device, the requirements for test conditions are high, and the safety and operability of the test are not high.

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