Filling pipeline repairing method

Abstract

The invention discloses a filling pipeline repairing method. According to the method, the pipeline damaged position is determined firstly, if the damaged position is located at a pipe body, a deep drilling segmented repairing method is adopted, a connection roadway is constructed and excavated from an open yard to the damaged position, a damaged filling pipeline is exposed, the damaged part is cutoff, an upper notch and a lower notch appear, a replacement pipe is installed, the upper end of the replacement pipe is connected to the lower portion of the upper notch, the lower end of the replacement pipe stretches into the lower notch, or the lower end of the replacement pipe is connected to the upper portion of the lower notch, the upper end of the replacement pipe stretches into the uppernotch, and a gap between the replacement pipe and the original filling pipeline is sealed. If the damaged position is located at the pipeline connector position, a connector local repairing method isadopted, two pipelines at the damaged positions are unscrewed, an abrasion resisting pad is embedded in the damaged position, sealing is conducted, a pouring jacket sleeves a pipeline connector at thedamaged position, filling materials are poured into the pouring jacket till a box body is fully filled, and sealing is finished. The different repairing methods are adopted for different damaged positions, cost is reduced, the repairing process is simplified, and filling drilling repeated utilization is achieved.

Description

technical field [0001] The invention belongs to the field of underground mine filling and mining, in particular to a filling pipeline repair method. Background technique [0002] In the downward stratified access cemented filling mining method, after the access mining is completed, high-concentration fine sand (rod scrub) pipeline is used to transport cemented filling. The characteristics of the filling hole will become more and more obvious, the damage of the filling hole will be more serious due to wear and tear, and the service life of the hole will be greatly shortened. On the other hand, during the construction of the filling hole, if foreign matter enters the deep part, the filling hole will be unusable, and the original blockage must be excised and repaired. The Chinese patent "Method of Reusing Filled Drilled Holes" (Application No. 200610032213.8) discloses a method of filling and drilling pipeline cutting technology to realize the repeated repair and use of existi...

AI Technical Summary

Problems solved by technology

This method is very inefficient when cutting and drilling, with an average cutting of about 3m per day, severe tool wear, and high cost. Especially when the drilling depth exceeds 393m-500m, the connection between the pipe collar and the wall pipe must be considered when installing without coupling. When the distance between the two pipes is small, the slurry is easy to solidify between the two pipes after the small-diameter pipe is worn out, and the small-diameter pipe is not easy to install; It swings a lot in the wall pipe, and the small diameter pipe is easy to wear out

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