关键词: 试验平台, 冲击地压, 真三轴加载, 随钻参数, 实时测量

Abstract: To investigate the quantitative relationship between drilling rig parameters and surrounding rock parameters, and to achieve the synchronization of rockburst pressure relief drilling and early warning evaluation, we independently developed an intelligent experimental platform for drilling and testing of rockburst prevention drilling rigs. The platform consists of an intelligent drilling and testing rig, a large-scale true triaxial stress loading system, a computer control system, and other auxiliary devices. The platform effectively reproduces the mechanical parameters and structural characteristics of rock masses in field environments, enabling real-time measurement and collection of parameters during drilling. This study utilizes the platform to conduct preliminary validation experiments. The results show that the true triaxial stress loading system controls the horizontal and vertical multi-point loading hydraulic cylinder through an electro-hydraulic servo system, achieving precise and uniform true triaxial loading of large-scale specimens, with a maximum pressure of 6 000 kN, and can accurately reproduce the stress state of the surrounding rock of a kilometer deep well. The intelligent drilling and test rig, based on a guide rail hydraulic drilling rig, incorporates a high-precision sensing device and signal transmission module to enable real-time measurement and transmission of drilling parameters near the drill bit during drilling process of drill rods under complex conditions. The computer control system has functions such as true three-axis loading, drilling control, and drilling parameter collection, achieving synchronization between drilling and data acquisition. The overall structure design of the platform is reasonable and user-friendly. The developed platform can conduct large-scale specimen drilling tests under true triaxial stress conditions, significantly contributing to the study and establishment of quantitative relationships between drilling parameters and surrounding rock parameters, the development of synchronous intelligent warning technology for impact hazards, and the achievement of stability evaluation and synchronous warning of surrounding rock.

Key words: test platform, rock burst, true triaxial loading, drilling parameters, real-time measurement