| 常鸣,唐川.基于水动力的典型矿山泥石流运动模式研究[J].水利学报,2014,45(11): |
| 基于水动力的典型矿山泥石流运动模式研究 |
| Study on typical movement model in mine debris flow based on hydrodynamic force conditions |
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| DOI： |
| 中文关键词: 矿山泥石流 矿渣 水动力 |
| 英文关键词: mine debris flow slag hydrodynamic force |
| 基金项目: |
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| 中文摘要: |
| “4·20”芦山地震导致人工堆积矿渣更加破碎，位于震区的石棉县后沟属于典型的矿山泥石流易发区，其泥石流运动模式与所在流域的地形条件、水文条件、物源条件密切相关。由于人为泥石流和自然泥石流在运动模式上存在差异，因此本文从地形、水文、静动力及物源4 个条件入手，以石棉县后沟为例，详细论述矿山泥石流的运动模式。研究结果表明，后沟泥石流的运动过程模式包含了初期降雨降低废弃矿渣稳定性、持续降雨侵蚀矿渣坡面、雨水汇集形成洪流起动沟道矿渣、高含矿渣洪流裹挟运移起动泥石流、沿途侵蚀矿渣加强了泥石流规模等5 个方面。 |
| 英文摘要: |
| Some artificial accumulations of slag become more broken caused by“4·20”Lushan earthquake in 2013. Hougou is a typical mines debris flow susceptible region in earthquake zone of Shimian County. The motion pattern of its debris flow is closely related with terrain， hydrologic， static and dynamic， and material conditions. Since there are differences in motion patterns of man-made and natural debris flows，this study started with the four conditions and took Hougou debris flow as an example to discuss the motion pattern of mine debris flow in detail. The results show that the process of Hougou debris flow involves the following five aspects：（a） stability of waste slag reduced by initial rainfall；（b） slag slope eroded by continuous rainfall；（c） channel slag moving stimulated by rainwater；（d） debris flow forming with high content of slag torrent，and （e） debris flow scale enhanced by slag erosion along the gully. |
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