Study on Mine Water Hazard Chains and Chain-cutting Disaster Mitigation in Tengnan Mining Area

In this article, for the phenomenon of water bursting occurring frequently in China mine, disaster chain theory is used to study the mechanism of mine water disaster chain in Tengnan Mining area, the paper proposed the nascent stage chain-cutting method. Firstly, comprehensively analyzing the hydrogeological conditions in Tengnan Mine and the characteristics of mine water hazard, it found three stages development of the mine water disaster chain including the disaster nascent stage, latent stage，and erupting stage. Then, by studying mechanism of mine water disaster chain in Tengnan Mine，former disasters, secondary disasters and derived complex disasters are found. At last, the hierarchical analysis method is used to analyze the weight of mine water disaster impacting factor and mine water disaster is partitioned as well. What's more，the study takes the time series to analyze the water yield in different working face in order to determine the developmental stage of the mine water disaster chain and finally provides the measure of nascent stage chain-cutting.