New method for effectively recognizing ground fracture

Abstract

The invention provides a new method for effectively recognizing a ground fracture, and belongs to the field of geophysical exploration. The method comprises the following steps: firstly performing dip angle filter processing on original seismic data to obtain a ground fracture enhanced filter dip angle data body, artificially picking training sampling points of a gas chimney and a non-gas chimney, and then extracting multiple seismic attributes anddesigning andtraining a neural network at two groups of picking point sets, and applying the neural network with satisfied training to the whole seismic data body to obtain thegas chimney; and finally achieving an aim of recognizing and explaining the ground fracture by use of the method of displaying the seismic data and the gas chimney in an overlapping way. By use of the method provided by the invention, the precision of the ground fracture is explained by use of the seismic document.

Description

technical field [0001] The invention belongs to the field of engineering exploration, and in particular relates to an effective method for identifying ground fissures. Background technique [0002] "Ground fissure" short for ground fissure. It is a kind of macroscopic cracking that occurs on the surface rock layer and soil under the action of natural factors (crustal activity, water action, etc.) or human factors (pumping, irrigation, excavation, etc.), and forms cracks of a certain length and width on the ground. Surface damage. As a superficial geological disaster phenomenon, ground fissures are common in many countries in the world. Ground fissures cause ground and underground buildings to crack, damage road surfaces, disrupt underground water supply and gas pipelines, endanger the safety of cultural relics and historic sites, and cause huge economic losses. , which brings a lot of inconvenience to residents' lives, so it is of great significance to find out the distrib...

AI Technical Summary

Problems solved by technology

Due to the concealment and uncertainty of the development of ground fissures, it is difficult to detect them. If only the drilling method is used, since a single borehole can only understand the stratum at one point, not only the exploration period is long and the cost is high, but also the drill holes arranged The number and scope of exploration are limited, and it is difficult to meet the purpose of finding out the overall spatial distribution characteristics of ground fissures

Images