Development and application on intelligent pipe jacking tunnelling equipment in coal mining area

In order to solve the problems of slow driving speed,bad working environment and high construction cost in the existing coal mine high pumping way,based on the pipe jacking technology,the rock breaking mechanism of the hob for mine pipe jacking machine is studied,the cutting tool is rationally arranged and the intelligent control technology is used to realize the mine pipe jacking.Automatic guidance,automatic switch and automatic jacking.The ZDG1500 type intelligent mine pipe jacking tunnelling equipment was developed.The industrial test of the first coal mine pipe jacking in Huainan Zhangji Mine was carried out.The parameters and performance of the intelligent pipe jacking tunnelling equipment were verified.The test results show that the diameter of the first hole is 1 500 mm,the single driving length is more than 500 m,and the driving speed is 10～20 mm/min,and draw the distribution law of rock resistance of mine pipe jacking tunnelling machine,which is of great significance for solving the difficult problem of high drainage roadway construction.