Equipment and key technologies for full-section scientifically drilling of kilometer-level vertical shafts

The full section drilling technology of kilometer level vertical shaft is an important technical support for deep mine development.Focusing on the theme of mechanical efficient rock breaking and intelligent safe drilling,this paper expounds the research progress of mechanical rock breaking drilling equipment and unmanned drilling,reviews the technology,process and equipment system of mechanical rock breaking scientifically drilling composed of three kinds of drilling rigs:vertical shaft drilling machine,vertical shaft driving machine and reverse shaft drilling machine,and summarizes rock breaking,slag discharging,intelligent monitoring and control during the whole section scientific drilling of vertical shaft.Five core technologies of support and auxiliary drilling and 12 key technologies covered by them are put forward,and the key technical problems,scientific problems and research and development ideas that need to be solved in the whole section mechanical rock breaking drilling of kilometer level shaft are put forward.According to the characteristics of strong rheology and strong disturbance of formation rock under the condition of deep high stress,high rock temperature and high water pressure,taking the control technology of rock breaking and surrounding rock,high efficiency slag removal technology,equipment drilling and support technology called “three in one” collaborative control technology as the core,the focusing points in future research will be 1) The deep rock breaking mechanism and the surrounding rock control theory of shaft wall,the high efficiency rock breaking tech nology of auxiliary mechanical rock breaking.2) The multi phase flow dynamic theory,optimization of multi comparison,lifting height,velocity and other parameters,establishment of low energy consumption and efficient circulation slag removal mode.3) Research on the intelligent control theory of surrounding rock intelligent perception and identification and precise drilling trajectory,and development on the adaptive drilling technology of multi information fusion for deep formation drilling.Based on the previous systematic theoretical analysis,scientific test and drilling engineering application,combined with the interdisciplinary integration of engineering geology,drilling technology,rock mechanics,rock fragmentation,engineering mechanics,mechanical engineering and materials science,from three aspects of basic theoretical analysis,equipment performance and technology research,then a dynamic optimization design body for drilling parameters of mechanical rock breaking science is constructed.It provides a strong support for solving the coordination and matching among mechanical rock breaking,multi phase flow circulation slag removal and intelligent drilling promotion,finally forming a complete set of technology and equipment for full section scientifically drilling of kilometer level shaft,promoting the development of drilling science and scientifically drilling,as well as the progress of full section driving technology of kilometer level shaft.