Borehole cleaning system and cleaning method

Abstract

The invention discloses a borehole cleaning system and a cleaning method. The borehole cleaning system comprises a drilling machine, wherein a drilling rod is arranged at the upper part of the drilling machine; a rotary spray head is mounted at the head of the drilling rod; a water pipe is arranged on the drilling rod, and is communicated with the rotary spray head; a straight nozzle and an inclined nozzle are formed in the end part of the rotary spray head; and a recording device and a driving device are arranged on the drilling rod of the drilling machine. The borehole cleaning system has the advantages that the reaching distance is long, and the location is available; the effect of cleaning a borehole of a complicated structural system can be realized; the gas treatment effect can be improved greatly; and the economical efficiency and rationality of extraction quantities can be achieved. Through the synergistic effect of the straight nozzle and the inclined nozzle, when the borehole is cleaned, residues can be taken out of the borehole more easily, the barrier cleaning ability is good, the cutting efficiency is high, and plugged and collapsed holes can be dredged and cleaned more easily. The improvement is made on the rotary spray head, an additionally adopted through hole structure and a sealing surface formed by a rotating shaft and a central spindle forms a passage, and the passage and the sealing surface are filled with water serving as a gap, so that the friction to the sealing surface is reduced, and the service life of the sealing surface is increased.

Description

Technical field: [0001] The invention relates to the technical field of borehole cleaning, in particular to a borehole cleaning system and a cleaning method. Background technique: [0002] my country's coal mine gas disasters seriously restrict the safe and efficient production of mines. As a fundamental measure to control coal mine gas disasters, gas drainage is closely related to the safe production of mines. The quality of drainage drilling and the effectiveness of drainage are not only restricted by the initial construction process of the drilling, but also depend on the structure, mechanical properties and stress state of the coal and rock mass. At present, my country's coal mine gas drainage drilling is still in the stage of emphasizing production and not paying attention to maintenance. After the completion of drilling and drainage at a high cost, it will be left alone, making it automatically exhausted. There is a lack of effective maintenance and management technolo...

AI Technical Summary

Problems solved by technology

[0007] However, for drilling with a single and simple structure, the existing drilling cleaning and repairing equipment can still meet the engineering needs

However, for complex drilling structures, such as feathered drilling, and the newly proposed bionic vein drilling, this type of multi-branch drilling structure, there are few equipment that can realize the cleaning and repair of such drilling

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