Detecting device capable of realizing drill hole three-dimensional imaging and method thereof

Abstract

The invention discloses a detecting device capable of realizing drill hole three-dimensional imaging and a method thereof, and relates to the techniques of constructional engineering detection. The detecting device comprises a detector (20) on the ground, an electric winch (30) and a downhole sensor. The downhole sensor comprises a seal cylinder (32), a cable socket (31), a main circuit board (33), an epoxy resin waterproof layer (35), an internal connecting wire (34), a pressure spring (27), a rotary shaft (36), a long rod (39), a detecting arm (22), a detecting arm circuit board (37), and a damping disk (38). By the detecting device, detecting method is simplified, work efficiency is enhanced, and detecting precision is improved. By the three-dimensional imaging, comprehensive and visualized detecting results are provided. Aperture and hole deviation curves under different definitions can be calculated through different mathematical methods on the basis of three-dimensional imaging pictures, so that rich and diversified detecting results are provided. The detecting device is applicable to detection of aperture and hole deviation is constructional engineering.

Description

technical field [0001] The invention relates to construction engineering detection technology, in particular to a detection device capable of realizing borehole three-dimensional imaging and a method thereof. Background technique [0002] Bored pile is one of the common foundation pile forms in construction engineering. Its function is to transfer the load of the superstructure to the deep stable soil layer or rock layer, and reduce the uneven settlement of the superstructure. The construction of bored piles is divided into two stages: "drilling" and "pouring concrete" into the borehole. The drilling operation in the first stage is completed underground and with water injection, so quality control is difficult, and sometimes complex geological conditions may easily cause mistakes in construction, which may eventually lead to different diameters (apertures) of boreholes, and holes along gravity The direction is tilted (hole skew) and other problems. [0003] After pouring c...

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Problems solved by technology

[0031] ① The detection of aperture and hole inclination requires different devices, and the detection cannot be completed at one time, which artificially increases the workload on site;

[0032] ② The accuracy of aperture detection is low; Figure 3.2 , the circular motion of the larger stroke of the end b of the measuring arm 22 is converted into the up and down linear motion of the smaller stroke of the sliding rod 26, and the large stroke to small stroke means the loss of sensing accuracy;

[0034] ④ Hole inclination detection uses a separate traditional inclinometer 28; in actual testing, the traditional inclinometer 28 needs to rely on its own weight to completely contact the inner wall of a certain orientation of the borehole 1, so what is detected is the inclination angle of the inner wall at this orientation, and Cannot fully represent the inclination angle of borehole 1;

[0035] ⑤Whether the traditional inclinometer 28 can fully contact the inner wall of the borehole 1, it is necessary to try different measuring points at the opening of the borehole 1, and combine the depth position of the traditional inclinometer 28, the aperture of the borehole 1 and other information to give Therefore, the detection process is complicated, and the detection results need to rely on manual experience

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