Method for positioning micro-seismic source containing multi-layer speed structure
A seismic source location and microseismic technology, applied in positioning, seismic signal processing, instruments, etc., can solve problems such as errors and interference with microseismic source location results
Pending Publication Date: 2022-07-15
深蓝感知(杭州)物联科技有限公司
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However, in the actual environment, complex engineering geological environments often exist in mining areas, and the propagation speeds of seismic waves in different geological structures are often quite different. Using a single wave speed will greatly interfere with the microseismic source positioning results, resulting in large error
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[0038] The above and other technical features and advantages of the present invention will be clearly and completely described below with reference to the accompanying drawings, and the present invention will be further described in detail.
[0039] like figure 1 Shown is a method for locating a microseismic source including a multi-layer velocity structure of the present application, which mainly includes the following steps: collecting microseismic signal data through a geophone. Pick up the first arrival moment of the microseismic signal. When the number of detectors that pick up the initial arrival time of the microseismic signal in the same time period is greater than the preset number, the interface equation of the medium with different velocities is constructed according to the medium layer structure of the area to be located. The hypocenter location results were initially obtained by particle swarm algorithm. The preliminarily obtained source location results are opt...
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The invention discloses a method for positioning a micro-seismic source comprising a multilayer speed structure. The method comprises the following steps: collecting micro-seismic signal data through a detector; picking up the first arrival moment of the micro-seismic signal; when the number of the detectors picking up the first arrival moment of the microseismic signals in the same time period is greater than a preset number, constructing an interface equation of media at different speeds according to the dielectric layer structure of the to-be-positioned area; preliminarily acquiring a seismic source positioning result through a particle swarm algorithm; and optimizing the preliminarily obtained seismic source positioning result through a Newton iteration method to obtain a final seismic source position result. According to the micro-seismic source positioning method containing the multilayer speed structure, the multilayer speed model is adopted to better conform to the real mining area geological environment, and the particle swarm and Newton iteration method combined source positioning algorithm is faster and more accurate.
Description
technical field [0001] The invention relates to a microseismic source location method comprising a multi-layer velocity structure. Background technique [0002] Mineral resources in the natural environment are of great significance to human society and play an important role in the development of the entire national economy. With the increasing demand for resources, the deep mining of minerals has become a trend. In the process of mineral mining, with the increase of goaf and the influence of construction, the geological structure of the rock layer will change. At this time, the mining area may have small ruptures. life safety of personnel. If real-time monitoring and positioning of microseisms can be carried out, and hidden dangers can be detected early through the monitoring and analysis of the microseismic source, disasters can be prevented and the loss of life and property can be minimized. [0003] Existing microseismic source location algorithms, such as grid search...
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IPC IPC(8): G01V1/28G01V1/30G01S5/22
CPCG01V1/288G01V1/30G01V1/303G01S5/22G01V2210/65G01V2210/6222G01V2210/324G01V2210/32
Inventor 金国庆李华松朱安安邱彦林
Owner 深蓝感知(杭州)物联科技有限公司