China's underground geotechnical engineering often faces complex geological conditions

such as high in-situ stress

subterranean karst

and extremely soft rock. These conditions can lead to loose and fractured rock structures

making it crucial for underground geotechnical engineering construction to quickly

accurately

and conveniently obtain rock mechanics parameters. We have autonomously developed the XCY-2 rotary cutting and penetrating system

a device for continuous monitoring of the drilling process. Various systems are integrated into this device

such as a power drilling control system

a comprehensive servo system

and an intelligent monitoring system. The installation process is straightforward

and the testing procedures are simple

facilitated by a human-computer interaction interface. To investigate the relationship between drilling parameters and the characteristic responses of different rock types during the rotary drilling process

we conducted comprehensive rotary drilling penetration tests under various conditions

including intact rock layers and layered rock masses

using the device and procedure. The test results showed that: 1) The intelligent monitoring system efficiently controls and monitors drilling parameters in real-time

including drilling speed

rotation speed

drilling torque

water pressure

drilling duration

drilling pressure

and drilling depth. This technology significantly facilitates high-precision drilling operations and continuous monitoring during underground construction. 2) When drilling through rock samples of various strength grades

we observed real-time fluctuations in drilling pressure and torque

while the drilling speed and rotation speed remained stable throughout the testing process. 3) Significant fluctuations in drilling torque and pressure were observed at the interfaces between different rock layers

indicating real-time perception of different rock types and achieving accurate positioning of rock layer interfaces. The XCY-2 rotary cutting and penetrating system provides a new approach for testing the physical and mechanical properties of underground rock masses.