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A Method for Acquisition of Overwater Seismic Refraction Data Based on Artificial Tamper Source

A technology of data collection and rammer, applied in the field of engineering survey, can solve problems such as large construction risk and ecological environment damage, and achieve the effects of avoiding ecological environment damage and pollution problems, improving construction safety, and strong practicability.

Active Publication Date: 2017-02-01
中电建(广东)工程监测检测技术有限公司 +1
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Problems solved by technology

Due to the use of explosive seismic sources, the traditional collection method is extremely destructive to the ecological environment and has a greater construction risk

Method used

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  • A Method for Acquisition of Overwater Seismic Refraction Data Based on Artificial Tamper Source
  • A Method for Acquisition of Overwater Seismic Refraction Data Based on Artificial Tamper Source
  • A Method for Acquisition of Overwater Seismic Refraction Data Based on Artificial Tamper Source

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the examples.

[0030] Those skilled in the art will understand that the following examples are only for illustrating the present invention and should not be considered as limiting the scope of the present invention. If no specific technique or condition is indicated in the examples, it shall be carried out according to the technique or condition described in the literature in this field or according to the product specification. The reagents or instruments used were not indicated by the manufacturer, and they were all conventional products that could be purchased.

[0031] Such as figure 1 As shown, a water seismic refraction data acquisition method based on an artificial rammer source includes the following steps:

[0032] Step (1), survey line design: determine the layout of the survey line according to the work tasks, detection objects, geological structure and topographical condit...

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Abstract

The invention designs a set of green and environment-friendly artificial rammer seismic source acquisition system to replace the explosive seismic source acquisition system, belongs to the field of engineering survey, and solves the problems of ecological environment damage and pollution caused by the explosive seismic source. The excitation energy of the self-designed artificial rammer in the invention has been verified by a series of tests and meets the survey requirements of general shallow earthquake engineering. For the water seismic refraction data acquisition of the cross-river section, the present invention selects the encounter time distance curve observation system, uses the artificial rammer to knock the aluminum alloy plate on the bank to excite the seismic wave, and uses the ship to transport the hydrophone along the surveying line arranged in advance. The location of the receiving point, and then receive the seismic wave point by point at a certain interval to complete the data collection. This method has been successfully applied in domestic and foreign hydropower projects in our unit, and has achieved good results and strong practicability. The invention changes the data acquisition and operation mode of the traditional seismic refraction exploration on water, and has broad market prospect and popularization value in hydropower and water exploration.

Description

technical field [0001] The invention belongs to the technical field of engineering survey, specifically belongs to the field of seismic survey of geophysical survey in the technical field of engineering survey, and in particular relates to a method for collecting seismic refraction data on water based on an artificial rammer source. Background technique [0002] In engineering investigation, it is often necessary to find out the thickness of overburden layer and weathered layer in each area, and understand the velocity of the underlying bedrock compressional wave and the distribution range of the low-velocity zone. Refracted wave method is the most widely used method in seismic exploration of hydropower engineering, and it is also one of the relatively mature methods. When the velocity of the lower medium in the stratum is greater than that of the upper medium, the seismic wave incident at a critical angle slides along the interface of the lower medium and produces refracted...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/143G01V1/20G01V1/28
Inventor 张宗亮高才坤唐力戴国强徐辉余灿林
Owner 中电建(广东)工程监测检测技术有限公司
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