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贵州省开阳地区富含磷矿矿床,是我国少有的特大磷矿区。从1958年开阳磷矿建矿至今,期间由于大量的开采磷矿、爆破岩石、修建道路、建设矿区等,曾经诱发了多次崩塌、滑坡、泥石流等自然灾害。研究区域内大量矸石、矿渣和山体滑坡、崩塌堆积体等堆积于洋水河流域内,为泥石流暴发提供了大量的物源,强降雨条件下极易暴发大规模的泥石流过程,威胁沿途的矿厂设施和下游县城居民的安全,为此分析该矿区泥石流物源总量、分布情况、分布特征及其稳定情况,分析可能诱发泥石流的降雨强度和降雨时间,为该区泥石流预警预报和泥石流的防治提供一定的参考。
Kaiyang area in Guizhou Province is rich in phosphate rock deposits, is China’s rare large phosphate rock area. Since 1958 Kaiyang phosphate mine has been built so far, due to the large number of exploitation of phosphate rock, blasting rock, building roads, construction of mining areas, has triggered many collapses, landslides, debris flows and other natural disasters. Large amounts of waste rock, slag and landslides and collapses accumulated in the study area accumulate in the Yangshui River Basin, providing a large number of sources for the outbreak of debris flow. Large-scale debris flow processes are easily triggered in heavy rainfall conditions. Mine-threatening mine facilities And the safety of the residents in the lower reaches of the county. To analyze the total amount, distribution, distribution characteristics and stability of debris flow sources in this mining area, the rainfall intensity and rainfall time which may induce the debris flow are analyzed to provide the debris flow warning and debris flow control in this area Certain reference.