水土分离生态综合治理泥石流方法探讨——以青岛市崂山区河东村泥石流治理为例

DISCUSSION ON THE APPROACH TO THE ECOLOGICAL MANAGEMENT OF DEBRIS FLOW BY WATER AND SOIL SEPARATION——Taking debris flow treatment of hedong village of laoshan district of Qingdao for example

2005年9月12日,青岛市崂山区河东村发生泥石流地质灾害,其周边大面积山坡仍存在潜在泥石流隐患,有再次发生泥石流的可能。通过对河东村泥石流"致灾因子"和"主灾因子"分析,得出该区发生泥石流的短历时雨强指数KH为1550.8。泥石流产生的物源条件和水源条件是缺一不可的,是水土共同作用的结果,为避免河东村再次发生泥石流,将水土分离是至关重要的。根据现场实际情况,综合考虑各方面因素,摸索出适合河东村泥石流水土分离生态综合治理方法,即地表、地下水土分离—生物生态治理—拦挡工程相结合方法,该方法在投资少、不影响风景区景观基础上,根本治理河东村泥石流发生。

A debris flow geologic disaster is disscussed in this paper, which occurred in Hedong village,Laoshan district, Qingdao city On september the 12th 2005. Potential problems still exsit around large areas, so does has the possibility of another debris flow. The ＂latent power degree＂ and ＂danger degree＂ of the debris flow was analysed, and its short-duration rainfall intensity KH was 1550.8. Both the material and water resouces are necessary for the happening of debris flow,which results from the jointaction of water and soil, so it is very important to separate water and soil to avoid debris flow happening again. Based on the field survey, various complications were considered, and the comprehensive treatment of debris flow in terms of water and soil was optimised, by a combination of separation of the surface and subsurface water-ecological treatment-anda rush dealing control project, in order to radically control the debris flow in Hedong Village . Therefore, good ecological benefits can be obtained without affecting the landscape of the scenic area.