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以野外实际调查资料为依据,在浅述区域地质环境条件的基础上,深入分析了泥石流形成条件、发育特征及危害程度,探讨了灾害治理的工程措施。认为较大的沟谷比降,丰富的松散固体物质储备,短历时、高强度、集中式的强降水,对短时间内汇集大量的水石极为有利,同时也为泥石流的发育和形成提供了强大的势能和物质来源,而沟口(下游)相对宽阔的扇形地又为泥石流提供了充足的堆积场所;泥石流类型为典型的强降雨崩塌型中频稀性沟谷型发展期泥石流,其形成区、流通区及堆积区的界线不明显;提出了“拦+固+清淤+护+排导”泥石流工程治理措施。
Based on the field survey data and on the basis of the geological and environmental conditions in the area, the formation conditions, development characteristics and hazard degree of debris flow are analyzed in depth. Engineering measures for disaster management are also discussed. Considering that the larger ratio of valley to valley, the abundance of loose solid matter reserves, short duration, high intensity and concentrated heavy rainfall are extremely favorable to the aggregation of a large amount of water stone in a short period of time, at the same time, it provides a powerful means for the development and formation of debris flow Potential energy sources and material sources, while relatively wide sectors of the Mizoguchi (downstream) provide sufficient accumulation sites for the debris flow. The debris flow type is a typical heavy rainfall collapse-type intermediate-frequency dilute-valleys-type development debris flow. Its formation area, circulation area And the boundary of the accumulation area is not obvious. The measures of “block + solid + dredging + retaining + drainage” and “debris flow engineering” are put forward.