Speed model database-based micro-seismic source positioning method
A velocity model and source location technology, applied in seismology, seismic signal processing, measurement devices, etc., can solve the problem of low positioning accuracy of microseismic sources, and achieve the effect of improving positioning accuracy
Active Publication Date: 2019-12-24
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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[0003] The invention provides a microseismic source positioning method based on a velocity model database, which solves the technical problem of low microseismic source positioning accuracy under complex geological conditions in the prior art.
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[0049] The embodiments of the present application provide a method for locating microseismic sources based on a velocity model database to solve the technical problem of low positioning accuracy of microseismic sources under complex geological conditions in the prior art.
[0050] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application. , rather than limiting the technical solutions of the present application, the embodiments of the present application and the technical features in the embodiments can be combined without conflict.
[0051] see figure 1 , a microseismic source location method based on a velocity model database, including...
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The invention belongs to the technical field of micro-seismic monitoring, and discloses a speed model database-based micro-seismic source positioning method. The speed model database-based micro-seismic source positioning method comprises the steps of dividing a monitoring region distributed with a micro-seismic monitoring system into a plurality of branch regions, and building a speed model database on the basis of sensor combination and optimal uniform wave speed and space error which are correlated to the sensor combination; and roughly positioning the branch regions of micro-seismic eventattribute by uniform wave speed when a micro-seismic event is triggered, and matching the speed model from the speed model database of the branch regions for positioning. With the speed model database-based micro-seismic source positioning method, provided by the invention, the positioning accuracy under a complicated condition can be fully improved.
Description
technical field [0001] The invention relates to the technical field of microseismic monitoring, in particular to a method for locating microseismic sources based on a velocity model database. Background technique [0002] Microseismic source location is an important part of microseismic monitoring and disaster warning, and building a velocity model that conforms to the actual stratum conditions is one of the key issues in microseismic source location. In the prior art, the uniform wave velocity model is mostly used. This model simplifies the regional rock mass wave velocity and ignores the difference in rock mass characteristics. However, a large amount of actual monitoring data shows that the rock mass wave velocity is non-uniform in the formation, especially In complex geological bodies such as faults and voids, the difference in wave velocity is large; therefore, it is obviously inappropriate to use a uniform wave velocity model under complex geological conditions. ; 2) ...
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IPC IPC(8): G01V1/28
CPCG01V1/288G01V2210/65
Inventor 陈炳瑞李涛魏凡博
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI