A kind of downhole survey method and equipment

Abstract

The invention relates to a drilling survey method. First, a drilling machine is used to drill a detection hole, and when a relatively hard obstacle is encountered during the drilling process, the survey is performed by an observation tester in the well. During the survey process, firstly probe down the water pipe with the detection device at the front to about 10cm from the bottom of the detection hole. The detection device includes a camera or a probe. The liquid, the camera is wired or wirelessly connected with a display or information storage device. By lowering the detection device of the tester, the display will transmit the image captured by the detection device in the well to the display in real time, so that the user can judge that the hard object is a municipal pipeline. , subway or stones, etc., and then make a reasonable judgment, and decide whether to continue drilling according to the attributes of the obstacles.

Description

technical field [0001] The invention relates to the technical field of geological exploration, in particular to a drilling survey method. Background technique [0002] After many years of reform and opening up, although modern society has developed a lot compared to before, the development has not stagnated because of this, and it is still moving forward. The development of the city has undergone many re-planning and transformation, and various pipeline networks for urban development are buried underground. [0003] In the current geological exploration methods, the most important, most commonly used and the most basic is still drilling, each hole needs to be drilled from the ground, and there are municipal pipeline networks or subways buried under a certain depth of the ground (generally within 5m, less Some of them are between 5m and 12m, and most of the subways are buried between 12m and 50m. To prevent the pipeline from being damaged by drilling, pipeline investigation,...

AI Technical Summary

Problems solved by technology

The current problem is that the drawings of the pipeline ownership unit and the actual pipeline location on the site cannot be all one-to-one correspondence. It is hard to find one, and the excavation depth can reach 3m is the limit

But urban construction requires geological survey, geological survey requires drilling, and the fact that drilling can only start from the ground cannot be changed

[0004] Due to historical and management reasons, many pipelines have brought great adverse effects to the current urban construction, especially in the preliminary survey stage of construction, the damage of existing pipelines will not only cause difficulties for people's life and production, and some even cause Secondary accidents, such as gas pipes, high-voltage electricity, high-temperature heat pipes, etc., or even disasters

[0005] All existing detection equipment can only perform indirect detection, and the confirmation of the attributes of obstacles (target objects) can only be indirect speculation, and cannot be accurately confirmed

Sometimes there is indeed no pipeline under the drilling point, and various obstacles will still be encountered during drilling. Drilling is abandoned because the attributes of obstacles cannot be confirmed, which has a serious impact on the design and construction of engineering construction.

In addition, during the drilling process, there will be sediment, sludge, sewage, etc. in the well. Some existing detection equipment with imaging observation functions such as cameras cannot observe the surface of obstacles through the sludge and sewage, thereby increasing It is more difficult to judge obstacles, and sometimes it is impossible to confirm obstacles, which affects construction efficiency

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