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Engineering geological survey method using horizontal directional drilling

A technology of horizontal directional drilling and horizontal directional drilling rig, which is applied in the directions of directional drilling, drilling equipment and methods, drilling equipment, etc., can solve the problems of not being able to truly and comprehensively reflect the characteristics of surrounding rock, high comprehensive engineering cost, and difficulty in normal implementation, etc. Achieve the effects of long-distance high-precision directional survey, high equipment intensification, and long traversal distance

Active Publication Date: 2019-12-17
CHINA UNIV OF GEOSCIENCES (WUHAN)
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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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  • Engineering geological survey method using horizontal directional drilling
  • Engineering geological survey method using horizontal directional drilling
  • Engineering geological survey method using horizontal directional drilling

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Embodiment Construction

[0049]In order to make the object, technical solution and advantages of the present invention clearer, the implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0050] Embodiments of the present invention provide a kind of engineering geological investigation method that adopts horizontal directional drilling, comprising the following steps:

[0051] S1 arranges the horizontal directional drilling machine 1 on one side of the underground engineering, so that the horizontal directional drilling machine 1 carries out horizontal directional drilling along the axis 8 of the underground engineering;

[0052] Please refer to figure 1 , when the underground project is a mountain-crossing project, during the traversing process of the mountain body 6, in order to prevent water gushing formations or broken formations, a casing 4 is set at the entrance of the horizontal directional drilling machine 1 to the borehole of th...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/04E21B25/00
CPCE21B7/046E21B25/00
Inventor 马保松闫雪峰曾聪张鹏
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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