四川地震
四川地震
사천지진
Earthquake Research in Sichuan
2015年
3期
25-28
,共4页
清水沟北侧%高位泥石流%暴发特征%防治措施
清水溝北側%高位泥石流%暴髮特徵%防治措施
청수구북측%고위니석류%폭발특정%방치조시
the northern Qingshui gully%debris flow with high position%breakout character%controlling measure-ment
通过对清水沟北侧泥石流的现场调查分析，得出该地暴发大规模泥石流主要是由于沟源大型滑坡产生的固体物源在雨水作用下形成的高位泥石流，在通过沟道卡口时形成堵溃，泥石流冲出量成倍放大，最后堆积于沟道中下游，在后期暴雨作用下，松散泥石流堆积体作为物源继续拉槽形成泥石流。针对这种泥石流暴发特征提出治理方案：在相邻清水沟出口处修建两道谷坊坝和一段排导槽，对该处泥石流沟采取排导的应对措施。
通過對清水溝北側泥石流的現場調查分析，得齣該地暴髮大規模泥石流主要是由于溝源大型滑坡產生的固體物源在雨水作用下形成的高位泥石流，在通過溝道卡口時形成堵潰，泥石流遲齣量成倍放大，最後堆積于溝道中下遊，在後期暴雨作用下，鬆散泥石流堆積體作為物源繼續拉槽形成泥石流。針對這種泥石流暴髮特徵提齣治理方案：在相鄰清水溝齣口處脩建兩道穀坊壩和一段排導槽，對該處泥石流溝採取排導的應對措施。
통과대청수구북측니석류적현장조사분석，득출해지폭발대규모니석류주요시유우구원대형활파산생적고체물원재우수작용하형성적고위니석류，재통과구도잡구시형성도궤，니석류충출량성배방대，최후퇴적우구도중하유，재후기폭우작용하，송산니석류퇴적체작위물원계속랍조형성니석류。침대저충니석류폭발특정제출치리방안：재상린청수구출구처수건량도곡방패화일단배도조，대해처니석류구채취배도적응대조시。
Based on the field investigation and characteristic analysis for the debris flow in the northern Qingshui gully,we think that in heavy rain season,loose deposit landslide and drag groove will form debris flow with a high-er position due to the large scale landslide. The debris flow will pile up in the middle and low channel and form a dam. The dam may collapse in heavy rain and the amount of debris flow may be multiplied times in the middle and lower reaches of the channel. According to the debris flow characteristics and in order to deal with the disastrous debris flow,two check dams and a length of row guide groove should be built to ensure the traffic safety of a high way. The measurement of drain and guide ditch can reduce the destroy effect of a debris flow.
