Profound unconsolidated formation visualized detection method

Abstract

The invention relates to a visual detection method for a deep loose bed. The method comprises the following steps: A. drilling is performed on the loose bed by adoption of the general drilling and wall retaining method, namely one section of steel pipe retaining wall is followed when one section is drilled; the steel pipe retaining wall is followed to the bottom of a hole, and then a wall retaining machine is run to the inside of the hole by the up-down means or the down-up means; an outer steel pipe is lifted out on a hole section for pickup; B. the hole section with the wall retaining machine is cleaned; C. after cleaning, pickup is performed on the hole section in which the wall retaining machine is positioned. The method successfully manufactures a high transparent PMMA pipe into the wall retaining machine and uses the general drilling technique to drill the deep loose bed, and then obtains the geological materials of the loose bed, thereby effectively solving the problem of hole collapse of the deep loose bed during the drilling process; moreover, the material compositions and the structural characteristics of the loose bed can be known really and intuitively through the pickup, and the method is a great breakthrough of the drilling technique for the deep loose bed.

Description

technical field [0001] The invention relates to a visual detection method for deep and thick loose layers in engineering investigation. Background technique [0002] Deep loose rock and soil layer is a kind of medium that human engineering activities often face. In the process of engineering construction, how to explore and find out the spatial distribution, material composition, structural characteristics, physical and mechanical properties of this medium is an important technical problem in the field of engineering investigation. [0003] The deep loose layer is generally composed of sand, mud with pebbles and block stones. In this type of formation exploration, due to its looseness and inhomogeneity, boreholes are prone to collapse. In addition to drilling difficulties, it is difficult to obtain real geological data of loose layers, which has always been the main technical problem in geological exploration. Especially in the western provinces of my country, most of the...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to accurately find out the physical characteristics of the loose layer in engineering survey, and provide a visual detection method of the deep loose layer, which effectively solves the problem of hole collapse in the deep loose layer during the drilling process. Camera can truly and intuitively understand the material composition and structural characteristics of the loose layer

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