Pile foundation hole bottom imaging device and construction method

Abstract

Disclosed is a pile foundation hole bottom imaging device. A videoing window and an illuminating window are formed in one side of a videoing box. The bottom of the box is paved with a foam plate in anunderlaid mode. A construction method of the pile foundation hole bottom imaging device includes the following steps that (1) a flashlight and camera equipment are placed in the videoing box well, and a videoing position of the camera equipment is aligned with the videoing window; (2) ropes with scales are tied to the two sides of the short edge of the videoing box correspondingly; (3) the videoing box is put down by using traction of the ropes, videoing is started, the videoing box in a hole is driven to rotate by using rotation of a rotating hung ring at a hole opening in the videoing process, and it is ensured that videoing can be conducted at the periphery of the interior of the hole and the videoing direction at the hole bottom can be adjusted at any time; and (4) the videoing time of the videoing box in all the directions is recorded, when the scales marked on the ropes reach the hole bottom elevation, the videoing box is lifted, then the flashlight and the camera equipment aretaken out, a flashlight switch is turned off, and videoing is stopped. The pile foundation hole bottom imaging device can photograph pore forming situations of a karst landform pile foundation, and has simple structure, high working efficiency and high operability.

Description

technical field [0001] The invention belongs to the field of bridge pile foundation engineering, in particular to a pile foundation hole bottom imaging device and a construction method. Background technique [0002] Karst landform is a general term for the surface and underground forms formed by the dissolution of soluble rocks by water with dissolution power, also known as karst landform. In addition to dissolution, it also includes mechanical erosion processes such as water erosion, subsidence corrosion, and subsidence. The action of water on soluble rocks is collectively referred to as large karst action. For the construction area where the terrain is uneven and undulating, and most of the bridge pile foundations are located in high-fill areas, geological surveys cannot know whether there are geological problems such as karst caves at the bottom of each pile foundation hole, so that the bridge pile foundation will be affected during the construction process. prone to la...

AI Technical Summary

Problems solved by technology

For the construction range where the terrain is uneven and undulating, and most of the bridge pile foundations are located in high-fill areas, geological surveys cannot know whether there are geological problems such as karst caves at the bottom of each pile foundation hole, so that the bridge pile foundation will be damaged during the construction process. prone to landslides

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