Xi’an Research Institute, China Coal Technology & Engineering Group Corp., Xi’an , China

In order to solve the drilling technical problems of rapid & safe construction of rescue channel after mine disaster, and break through the choke points of domestic equipment’s development, the following researches are carried out: first, the theory of rapid breaking rock and accurate drilling technology in complex strata is studied, and then the drilling message transmission technology in the condition of high-frequency percussion is developed, finally, rapid & accurate drilling technology of ground small life support hole is generated; the efficient rock breaking & flushing off and safe connection construction based on reverse circulation drilling of large diameter and combined power are developed, and that forms the efficient, accurate and safe drilling technology of ground large diameter rescue well; the control theory of carrier mounted drilling rig is researched, and the rescue drilling rig is developed based on the theory whose the maximum torque is 50 000 N·m, and the maximum lifting force is 1 200 kN, likewise the quick and safe elevating rescue equipment is developed. Through the process of research on rapid & accurate drilling technology of small diameter life support hole, development of efficient & safe drilling technology and equipment of large diameter rescue well, and development of surface elevating and rescue equipment, the integration of technology and equipment is generated, which provides support of technology and equipment for emergency rescue after mine disaster.

国家重点研发计划资助项目（2018YFC0808200）