Rock mass seismic wave and sound wave longitudinal wave velocity comparison and conversion method
A technology of longitudinal wave velocity and seismic wave, which is applied in the field of rock mass quality evaluation in water conservancy and hydropower projects, can solve problems such as non-compliance and affecting rock mass quality evaluation, and achieve effects that are beneficial to quality, improve comparability, and facilitate evaluation
Active Publication Date: 2018-01-09
CHINA WATER RESOURCES BEIFANG INVESTIGATION DESIGN & RES
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Practical applications can be described as diverse, and even a simple and rough comparative analysis of the measured acoustic and seismic wave velocities in different survey sections and conditions, such as comparing the acoustic wave velocity in the saturated state with the seismic wave velocity in the dry state or comparing the The conversion of the two wave velocities with different propagation paths fails to fully consider the influence of the water content state of the rock mass, the anisotropy of the rock mass, and the propagation path of the wave during the test. Evaluation
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[0021] The rock mass seismic wave of the present invention, the method for the comparison and conversion of sound wave longitudinal wave velocity, comprises the following steps:
[0022] A. Seismic wave and acoustic wave test Under the condition of the same measuring section, the same water saturation and the same wave propagation path, the seismic wave is tested by the encounter time-distance curve observation system; drill holes are arranged in the vertical direction of the corresponding receiver points of the seismic wave encounter time-distance curve observation system , the sound wave adopts the cross-hole horizontal synchronous test;
[0023] B. Interpret the acquired seismic wave and sound wave data;
[0024] C. According to the interpreted data, the comparative conversion relationship of seismic wave and sound wave longitudinal wave velocity is obtained.
[0025] Step B specifically includes:
[0026] B 1 , Interpretation of seismic wave data, based on the obtained ...
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The invention discloses a rock mass seismic wave and sound wave longitudinal wave velocity comparison and conversion method. The method comprises the steps that seismic waves and sound waves are tested under the conditions of the same measuring section, the same saturated water and the consistent wave propagation path, and seismic waves are tested by an encounter time curve observing system; boreholes are arranged in the corresponding detection point perpendicular direction of the seismic wave encounter time curve observing system; and cross-hole horizontal synchronization testing is carried out on sound waves. Seismic wave and sound wave data interpretation method is provided. The seismic wave and sound wave longitudinal wave velocity comparison and conversion method is provided. According to the invention, the seismic wave and sound wave longitudinal wave velocity comparison and conversion method is regulated, which is helpful for establishing the relationship between seismic wave and sound wave longitudinal wave velocity in a survey area, and can provide an important basic result for the quality evaluation of an engineering rock mass.
Description
technical field [0001] The invention relates to the quality evaluation of rock mass in water conservancy and hydropower engineering, in particular, it is a method for comparing and converting the velocity of seismic wave and sound wave longitudinal wave of rock mass. Background technique [0002] Rock mass elastic wave testing in water conservancy and hydropower engineering mainly includes ultrasonic, acoustic and seismic wave testing. Ultrasonic waves are mainly used for core testing, acoustic waves are mainly used for sonic logging of single-hole rock mass and acoustic wave cross-hole testing, and seismic waves are mainly used for testing rock mass on the basement surface and wall rock mass, and drilling and drilling. Hole and caving, drilling and caving test, etc. [0003] In general large and medium-sized water conservancy and hydropower projects, the quality evaluation of the foundation rock mass in the technical construction stage requires the deployment of seismic wa...
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IPC IPC(8): G01V1/30G01V1/32
Inventor 王清玉王志豪段伟刘栋臣张美多王杰何灿高赵吉祥王长伟周振广
Owner CHINA WATER RESOURCES BEIFANG INVESTIGATION DESIGN & RES