Hydraulic servo control seismic wave generating device and working method thereof

Abstract

The invention relates to a hydraulic servo control seismic wave generating device and a working method thereof. The hydraulic servo control seismic wave generating device includes a transverse wave generating device and a longitudinal wave generating device. Shock absorption airbags and a transverse wave actuator which is arranged on a bracket are arranged between the ground contact plate and pressure bearing plate of the transverse wave generating device; a displacement sensor is built in the transverse wave actuator; one end of the transverse wave actuator is provided with a pressure sensor;the ground contact plate is provided with a bracket; and a guide rail is fixed on the bracket. A longitudinal wave actuator is arranged between the ground contact plate and pressure bearing plate ofthe longitudinal wave generating device; a displacement sensor is built in the longitudinal wave actuator; one end of the longitudinal wave actuator is provided with a pressure sensor; the pressure bearing plate is fixed on a counter-force pile; and the counter-force pile is inserted into a foundation so as to provide a counter-force for the longitudinal wave actuator. The transverse wave generating device and the longitudinal wave generating device both adopt hydraulic sources. The actuators, pressure sensors and displacement sensors are connected with a computer. The hydraulic sources are controlled by the computer. With the hydraulic servo control seismic wave generating device and the working method thereof of the invention adopted, stable and large-energy seismic waves can be generated; seismic waves of different waveforms can be generated according to needs; and a pressure control-based seismic wave control mode and a displacement control-based seismic wave control mode can be provided.

Description

technical field [0001] The invention relates to a seismic wave generating device, in particular to a hydraulic servo control seismic wave generating device. The invention also relates to the working method of the hydraulic servo control seismic wave generating equipment. Background technique [0002] Seismic waves mainly include longitudinal waves and transverse waves. Seismic waves not only have strong propagation ability, but also have the characteristics of reflectivity and refraction, while rock and soil are mostly distributed in layers, and each layer has different propagation characteristics of seismic waves. Using the theoretical knowledge of seismic waves to solve rock and soil Therefore, seismic waves are widely used in geotechnical engineering and geophysical engineering, especially in field tests. Generating seismic waves with strong stability and high controllability can not only promote the application of seismic waves in engineering, but also solve related eng...

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Problems solved by technology

[0004] The invention discloses a hydraulic servo control seismic wave generating device. Two modes of pressure control and displacement control can be selected for vibration control, the vibration frequency can be controlled, and sine waves, cosine waves, square waves, random waves, etc. can also be selected according to requirements. Different types of longitudinal waves and transverse waves solve the shortcomings of the existing seismic generating devices such as low energy, poor stability, repeatability, and low safety, and lay a more solid experimental foundation for the application of seismic waves in geotechnical engineering and geophysical engineering

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