Installation and construction method of mine bolt for roadway support

Abstract

The invention relates to an anchor stock installation and construction method for roadway support use and mining use. The method comprises the steps that 1, a drilling machine is connected with an ordinary drill pipe, location designating in a roadway wall is conducted, and an anchor stock hole is drilled; 2, the ordinary drill pipe is discharged, a chambering drill pipe is connected with the drilling machine, the chambering drill pipe is pushed into the anchor stock hole, so that the chambering operation on the bottom of the anchor stock hole is conducted, after the chambering operation is finished, the chambering drill pipe is quit; 3, coal dust and rock waste in the anchor stock hole are cleaned; 4, an anchor stock is inserted in the anchor stock hole, and anchoring agent is injected into the anchor stock hole; 5, after the anchoring agent is solidified, the anchor stock is sleeved with an underboarding, and nuts are screwed on the underboarding so that the roadway wall can be pressed out by the underboarding. According to the anchor stock installation and construction method, the operation is simple, the cost is lower, the chambering property is stable, and a cutting tool can spread out automatically and be recycled effectively. The problems of the anchor stock failure caused by sliding instability between the anchor stock and the hole wall can be effectively solved, the safety situation of the mine can be improved, the production efficiency of the mine can be improved, and it is of great significance to achieve safe and efficient mining and supporting for the mine.

Description

technical field [0001] The invention belongs to the technical field of roadway support, and in particular relates to a method for installing and constructing mining bolts for roadway support. Background technique [0002] Bolts used in underground roadway support have the characteristics of simple structure, convenient construction, and strong adaptability. Therefore, bolt support has become the main way of roadway support in recent years, but in the engineering application of bolt support, the failure form of the bolt is mainly due to the coal adhered to the hole wall during the anchoring process during the support process. The sliding between the anchor rod and the hole wall becomes unstable when the rock is gray or broken and soft. [0003] In view of the problem of bolt slipping and instability, some scholars try to solve this problem by reaming the bolt hole. Unstable holes, difficult tool recovery and other issues. Therefore, it is a new direction to propose a reami...

AI Technical Summary

Problems solved by technology

[0003] In view of the problem of bolt slipping and instability, some scholars try to solve this problem by reaming the bolt hole. Unstable holes, difficult tool recovery, etc.

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