The "Safety Navigation" for Tunneling Operations

During the tunneling of coal mine roadways, accurately predicting the geological structures ahead has always been a crucial link in ensuring safe and efficient production. However, traditional seismic detection methods often require halting production. This puts production in a dilemma of "delaying production for detection or being unable to detect during production", not only affecting the production progress, but also having problems such as large detection blind spots and low structural identification efficiency. Tunneling operations have long been in a "blind pushing" mode, with significant safety risks.

Facing these industry challenges, relying on years of technical accumulation, CCTEG Xi'an Research Institute broke through the limitations of traditional methods. By integrating cutting-edge technologies such as geophysical exploration, big data analysis, and artificial intelligence, it successfully developed a real-time seismic monitoring system along with excavation. Without affecting normal tunneling, this system achieves "integration of tunneling and detection". Using the vibrations generated during roadheader operation as the seismic source, a high-precision sensor array arranged in the roadway can collect geological signals in real time. Combining big-data-optimized acquisition processing and dynamic CT inversion algorithms, it enables real-time imaging of geological structures in front of the tunneling face and dynamic identification of abnormal bodies, generating high-precision geological images within 150 meters ahead of the tunneling face. This significantly improves the accuracy and timeliness of geological prediction, providing a reliable technical guarantee for the safe and efficient tunneling of roadways under complex conditions.

The system has the capability of "real-time early warning". Without interfering with normal tunneling, it can continuously track geological changes, provide data support throughout the process, and achieve a detection accuracy rate of over 90%. It truly realizes "real-time seismic monitoring along with excavation", greatly improving the foresight and safety of roadway tunneling work. Currently, this technology has been tested on a large scale and successfully applied in typical complex geological mining areas, including the No. 13 Mine of Pingdingshan Tian'an Coal Mining Co., Ltd., the Zhangji Mine of Huainan Mining Group, and the Zhenchengdi Mine. The cumulative tunneling detection mileage has reached several thousand meters, and more than 140 geological anomalies have been successfully predicted and exposed. The key technical indicators have been appraised at an international advanced level, providing a reliable basis for mine disaster prevention and control and efficient tunneling.