Overwater deep well hole-cleaning method

Abstract

The invention provides an overwater deep well hole-cleaning method. The overwater deep well hole-cleaning method comprises the following steps that fences embedded in the lower portion of the bottom of a water body is arranged at the bottom of the water body, and the tops of the fences are higher than the surface of the water body; a rotary drill device is used for extending into the fences to conduct rotary drilling on the bottom of the water body so as to rotary drill at the bottoms of the fences and form a hole which vertically extends downwards, in the process of forming the hole through the rotary drill device, a high-pressure air tube synchronously extends downwards and delivers compressed air, and the distance of 2-3 m between the tail end of the high-pressure air tube and the bottom of the hole is always kept. Through the overwater deep well hole-cleaning method, the effect of efficient hole cleaning treatment is achieved in the hole forming process through the rotary drill device, and secondary pollution to the water body in the construction process of forming a deep well is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a deep well cleaning method required for the installation of a cyanobacteria deep well treatment device used for improving and purifying water bodies in lakes and other natural waters. Background technique [0002] With global warming and increasing environmental pollution, water bodies (such as: lakes or rivers) have experienced serious eutrophication, which leads to the outbreak of blue-green algae. On July 18, 2017, the applicant filed a Chinese invention patent application with the application number 201710585437.X and the name "Cyanobacteria Deep Well Treatment Equipment and Cyanobacteria Treatment Method". The present application relates to a deep well construction method based on the above-mentioned deep wells required for purifying cyanobacteria, especially deep wells that reach 50 meters or even deeper from the vicinity of the water surface to the lowest...

AI Technical Summary

Problems solved by technology

As a result, when the outer tube well is vertically installed in a deep well, the side wall of the outer tube well, especially the side wall of the outer tube well at its bottom, lacks the necessary friction force and the extrusion of sand and gravel, resulting in the installation of the outer tube well. There is a vertical cross, which will easily lead to the inclination of the finally installed cyanobacteria deep well treatment equipment, resulting in a decline in the algicidal effect of cyanobacteria deep well treatment equipment on cyanobacteria

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