Design and Application of a Composite Grouting Equipment in Coal Mines

Abstract

In recent years, with the development of the coal mining industry, the underground broken surrounding rock grouting process in mines has played a vital role in the safe production of coal mines. At the same time, in order to adapt to the needs of intelligence and unmanned operation, a new process is urgently needed to assist grouting work.At present, among the many broken surrounding rock strengthening control methods in mines, drilling grouting is a widely used rock stratum modification technical measure, but with the continuous deepening of coal mining, the underground geological conditions are becoming more and more complex, and the stability of its roof and floor is seriously threatened. In order to ensure the safe production of mines, the broken surrounding rock grouting reinforcement technology has become an important support means. However, traditional grouting equipment has problems such as low work efficiency and complex operation. Its method of dealing with broken surrounding rock mainly relies on manual drilling and grouting. Especially when the drilling depth is large and the position is high, the workload of pushing the grouting pipe into the borehole is large, the labor intensity is high, the safety hazards are large, and the efficiency is generally low. Therefore, this paper studies and discusses the design principle, structural characteristics and working principle of an integrated composite grouting equipment for underground movement, delivery, mixing and injection in coal mines, and verifies the feasibility and effectiveness of the equipment.