Mining bolt-grouting device and use method thereof

Abstract

The invention provides a mining bolt-grouting device and a use method thereof. The mining bolt-grouting device comprises a grouting base (4a), a grouting pipe (5) and a through hole (4b) are arrangedon the grouting base (4a), and a sealing ring (3) in corresponding fit is arranged on one side of the through hole (4b). A grouting hole (8) is formed in the grouting base (4a), and the grouting pipe(5) is sleeved with a cover plate (6) and a hole sealing sleeve (7) in sequence. During use, construction is carried out through the steps of net laying, punching, placing-in, fastening, concrete sealing, grouting, taking-out, re-fastening and concrete re-sealing. The mining bolt-grouting device has the advantages that the structure is simple, use is convenient, the grouting effect is good, materials are saved, the labor intensity of workers is reduced, the construction cost is greatly reduced, and part of components can be reused.

Description

Technical field: [0001] The invention relates to a device used in conjunction with mine anchor rods or anchor cables, in particular to a mine anchor injection device and its application method. Background technique: [0002] With the increasing scale of mining, the depth of mine mining is also increasing. Therefore, the pressure on the surrounding rock of the roadway is also increasing, especially the roadway, weak rock formation and broken zone affected by mining. The roadway is located in unstable rock. In the body, the weak surface of the surrounding rock is developed, which makes the strength and stability of the surrounding rock poor, which brings great difficulties to the control of the surrounding rock of the roadway and the support and maintenance of the roadway. And adopt conventional bolt / anchor cable to carry out support, its effect is unsatisfactory. The anchor injection technology developed in recent years has been widely used in mines and geotechnical engineer...

AI Technical Summary

Problems solved by technology

Grouting bolts generally use steel pipes with grout holes as the rod body. Due to the thin wall of the steel pipe, its bearing capacity is also very low, generally below 100KN. The function of the grouting pipe cannot be recycled and reused; in addition, due to the need to re-drill and install the grouting anchor, a lot of manpower and material resources are wasted, which increases the cost and reduces the efficiency.

However, ordinary anchor rods / cables only play a general anchoring and supporting role after installation, and cannot achieve full-length anchoring and grouting reinforcement, which reduces the overall supporting effect, wastes manpower for drilling, and cannot be reused , resulting in a huge waste of

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