A method for pulling upvc double-wall corrugated downpipe wells

Abstract

The invention relates to tube well construction, in particular to precipitation plastic tube well construction. A method for removing a UPVC double-wall corrugated precipitation tube well comprises the steps: first four hanging bars are evenly arranged on the outer side of the UPVC double-wall corrugated precipitation tube well; the hanging bars are made of steel bars and externally wrapped with a plastic film, a cutting knife with a hook is welded to the bottom of each hanging bar, the inner side of the bottom of the hook of the cutting knife is provided with a blade, and the top of each hanging bar is provided with a hanging ring; the edge part of the cutting knife is embedded upwards into a tube well bottom cover, and a cutting edge of the cutting knife is placed at the bottommost part of the UPVC double-wall corrugated precipitation tube well; precipitation operation is performed; finally, after the precipitation operation is finished and drainage facilities in the tube well are recycled, a lifting appliance is used to pull upwards the hanging ring located on a tube well upper opening, a mode of multiple lifting or single lifting is adopted, the goal of cis-cutting is achieved, a UPVC double-wall bellows well tube divided into four pieces after the cutting is separated from a well opening and taken out manually. The method is simple and easy to operate, and environmental pollution is reduced.

Description

technical field [0001] The invention relates to the construction of tube wells, in particular to the construction of plastic tube wells for precipitation. Background technique [0002] At present, UPVC double-wall corrugated pipes are mostly used in dewatering dewatering wells and dewatering pipe wells with a depth of about 20m. Due to its light weight, good processing performance and low price, the use probability of this pipe in the dewatering construction industry is on the rise. However, after the dewatering project is completed and the water pump in the dewatering well is dismantled and recycled, the pipe well will be left in the soil because it cannot be removed. It is made of UPVC, and it will gradually decompose after being in the ground for a long time with the extension of time. After decomposition, it will cause erosion and pollution to the surrounding soil and groundwater. With the vigorous development of various construction projects in our country, the use of ...

AI Technical Summary

Problems solved by technology

Due to its light weight, good processing performance and low price, the probability of using this pipe in the precipitation construction industry is on the rise. However, after the dewatering project is completed and the water pump in the dewatering well is removed and recycled, the tube well will be left in the soil because it cannot be removed. It is made of UPVC, and it will gradually decompose if it is in the ground for a long time. After the decomposition, it will cause erosion and pollution to the surrounding soil and groundwater.

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