Geological detection method and system for karst area multi-pile foundation and medium

Abstract

The invention provides a geological detection method and system for a karst area multi-pile foundation in railway elevated engineering and a medium. The detection method comprises: selecting a first position of initial exploration in a pier and abutment projection range, and forming first detection holes for radar detection; obtaining a vertical distance from the abnormal point to the first detection hole as an abnormal distance; drawing a preset abnormal distribution curve by taking the first position as a center and taking the measured abnormal distance of any abnormal point as an intercept;and selecting the intersection point of the preset abnormal distribution curve and the expected pile position of the expected support pile as a second position for verification detection. According to the geological detection method for the karst area multi-pile foundation, abnormal point detection can be completed through the least detection holes, the drilling workload can be reasonably optimized, the exploration quality can be improved, the construction cost can be effectively saved, and through actual verification, the detection accuracy is high, the effect is good, and good application prospects are achieved.

Description

technical field [0001] The invention is applied to the field of engineering geological detection, and in particular relates to a geological detection method, a control system and a medium applied to multi-pile foundations in karst areas in railway viaduct projects. Background technique [0002] In recent years, my country's existing large-scale individual projects such as national railways, rail transit, and industrial and civil construction have all been implemented in accordance with the organizational requirements of survey, design, and construction. As a typical unfavorable geological phenomenon, "pile foundation in karst area" is an engineering term that survey and design personnel will face at various stages and have a very high contact frequency. [0003] At present, the borehole karst detection technologies used in railway survey mainly include electromagnetic wave CT method, seismic wave CT method, tube wave method, single hole acoustic wave method, etc., among wh...

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Problems solved by technology

And obtain the distance between the abnormal point or the reflector and the borehole according to the formed two-dimensional plane image, but in the process of forming the two-dimensional image, the direction data will be lost, and the orientation of the abnormal point or reflector cannot be determined, so the routine use It is necessary to conduct blind exploration according to the abnormal distance, resulting in waste of drilling workload and increased cost

Due to the above reasons, if the borehole radar is to be applied to the construction detection of the elevated railway, it is often necessary to detect all the pile positions of the platform sequentially or randomly conduct blind detection, which leads to huge costs

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