Initial research on key technologies for deep deposit mining

China's "10th Five-Year" scientific and technological research project "Study on Key Technologies of Deep Deposit Mining" has achieved many breakthroughs after nearly three years of research. According to Science Times reported that the Chinese and the subject of gold Lingnan Nonferrous Metals Corporation Limited, white silver Nonferrous Metals Company, Changsha Institute of Mining Research, Central South University, China Earthquake Administration Institute of Crustal Dynamics and other units jointly undertaken against China's rapid economic development The demand for mineral resources has increased sharply, while the resources of shallow deposits have gradually dried up, the trend of mining is deepening, and the situation of many mines after years of mining and the existence of complex multi-space areas affecting resource recovery and causing safety hazards has been carried out. Research on key technologies for safe and efficient mining under the conditions of deposits and complex multi-space areas.

The research team has made breakthroughs in the following aspects: First, in-depth study on unloading mining technology for deep mining conditions, and applied to high-level stratified upper rock drilling and mining methods in the panel area, achieving good results. Secondly, for the first time, a multi-channel full-digital real-time microseismic monitoring system and a comprehensive prediction model for deep well geostresses were established in hard rock mines with a positioning accuracy of 5-8 m. Third, the deep well ventilation network optimization technology was deeply carried out. Research and development of deep ventilation system network optimization analysis and calculation software, the establishment of a high-temperature underground ventilation network digital model; Fourth, the application of ground penetrating radar and Rayleigh wave detection technology to solve the technical problems of underground complex space distribution and shape detection.

On this basis, the researchers proposed a depletion loss control technique through the simulation of the ore flow law and the waste rock mixing mechanism, and optimized the segmental rock drilling and continuous collapse mining under complex multi-space conditions. mining Project; Finally, the salesman to Fankou lead zinc ore and lead-zinc plant dam relying on two large-scale mines, through scientific and technological research to solve technical problems in the construction of mine production, research results have been successfully been applied in mine , achieved significant economic and social benefits.

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