Coverage type karst multi-line simultaneous detection and survey method under strong interference condition

Abstract

The invention discloses a coverage type karst multi-line simultaneous detection and survey method under a strong interference condition. The coverage type karst multi-line simultaneous detection and survey method under the strong interference condition comprises the following steps of: researching the background of areal geology and regional hydrogeology, collecting and analyzing background information and early-stage survey data of areal geology and regional hydrogeology, and determining spacing between survey points and a geophysical prospecting CT profile line net arrangement form accordingto the project type, the design scheme and the early-stage survey data; adopting an intuitional method to observe a drilled rock core, adopting a drilling color television to perform in-situ observation of an karst cave or a soil cave, acquiring a hole wall image in real time by an imaging system, and performing primary image on an all-hole wall; knowing karst cave distribution, a shape and a large-scale basic development rule according to detection and survey; comprehensively explaining and delineating an abnormal point according to geophysical prospecting results, and performing planar projection synthesis on abnormal regions delineated on different CT profiles; and performing comprehensive drilling, test, geophysical prospecting and hydrogeological conditions to analyze the karst development rule. The coverage type karst multi-line simultaneous detection and survey method has the advantage of being capable of accurately reflecting a karst development condition.

Description

technical field [0001] The invention relates to the field of engineering geological survey, more specifically, it is an overlay type karst exploration method under strong interference conditions, and more specifically, it is an overlay type karst multi-line joint measurement survey method under strong interference conditions. Background technique [0002] Covered karst refers to karst covered by loose deposits of the Quaternary system, distributed in cities such as Guilin, Guangzhou, Hangzhou and Wuhan. With the acceleration of urban underground space development, karst problems such as karst ground subsidence, karst uneven foundation, tunnel and deep foundation pit water and mud inrush are frequently encountered and unavoidable problems in the process of underground engineering construction in karst areas. These problems are characterized by suddenness, concealment and sociality, and special investigation and research must be carried out on karst distribution, scale, shape ...

AI Technical Summary

Problems solved by technology

For the detection of covered karst caves under strong interference conditions, due to the large detection depth, it is difficult to carry out surface surveying and mapping, and geophysical prospecting and drilling are often used to carry out work. characteristics, has been affecting the survey results of this type of cave

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