Engineering geological survey method using horizontal directional drilling

Abstract

The invention provides an engineering geological survey method using horizontal directional drilling. The method comprises the following steps of Step 1, arranging a horizontal directional drilling machine at one side of underground engineering so that the horizonal directional drilling machine performs horizontal directional drilling along the axial line of the underground engineering; and Step 2, judging whether the continuous core taking is needed in the drilling process of the horizontal directional drilling machine; if the continuous core taking is needed, performing continuous core taking; and if the continuous core taking is not needed, performing discontinuous continuous core taking. The engineering geological survey method has the beneficial effects that the passing through a useless covering layer at the upper part is not needed; the direct exploration is directly performed in a constructed stratum of the underground space engineering; the invalid drilling footage and the workload are greatly reduced; the comprehensive efficiency is high; and the engineering cost is low. The linear survey along an axial line is realized. Compared with the conventional dotted survey, the geological features of a surrounding rock body can be really and comprehensively reflected; the whole process monitoring of drilling tracks is realized; the drilling precision is very high; and the drilling with the drilling tracks always along designed tracks is ensured.

Description

technical field [0001] The invention relates to the technical fields of engineering geology and hydrogeological survey, in particular to an engineering geological survey method using horizontal directional drilling. Background technique [0002] With the rapid development of my country's economy, the construction volume of underground space projects such as highways, railway tunnels and buried pipelines in my country is increasing year by year. Determination of investment decisions, routes, construction methods, equipment, support form selection, construction period and cost of underground projects all require refined and accurate engineering survey data as support. The traditional engineering geological survey method evaluates the characteristics of surrounding rock through field experiment, rock sample laboratory experiment, comprehensive logging and other methods, and infers the geological section along the line through the connection method. This method requires a large...

AI Technical Summary

Problems solved by technology

This method requires a large amount of unnecessary drilling work and discrete drilling, which cannot truly and comprehensively reflect the characteristics of the surrounding rock, and in areas with complex and harsh landforms and environmental conditions such as high-altitude mountainous areas and uninhabited areas, it is subject to transportation, water supply, and site conditions. , personnel health and environmental protection and other factors, it is difficult to implement normally, and the comprehensive project cost is very high

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