河流侵蚀

官方媒体援引国务院三峡工程建设委员会（statecouncilthreegorgesconstructioncommittee）主任汪啸风的话称，山体滑坡、泥沙淤积和河流侵蚀正在引发环境和安全隐患，决不能掉以轻心。

Landslides , silting and erosion above the dam are creating environmental and safety hazards that cannot be ignored , Wang Xiaofeng , director of the State Council Three Gorges Construction Committee , was quoted as saying in state media .

研究结果表明，平谷地区的地表陡坎是河流侵蚀陡坎。

Study results indicate that the surface scarps of the Pinggu area are river erosion scarps .

该沟主要工程地质问题为边坡稳定性、渗透稳定性、河流侵蚀等。

The main engineering geological problems of the gully are slope stability , seepage stability and fluvial erosion , etc.

特殊的地层岩性条件是滑坡产生的基本因素，地下水活动及河流侵蚀是其诱发因素，人类活动是其强化因素，地震活动是其潜在诱因。

Landslides are induced from special lithology , underground water and fluvial erosion as well as human activity and earthquake .

在地壳上升和湖浪、河流侵蚀作用下形成湖积-侵蚀台地；

The formation of lacustrine sedimentation-erosion stage under the function of the crust rising , erosion of lacustrine wave and river ;

河流侵蚀形成陡坎的方向追随河流的冲沟方向，具不稳定性，并且陡坎的倾向沿河对称。

Direction of scarps caused by river erosion follows the river , is unstable and the tendency of scarps is symmetric along the river .

分析表明地形地貌、地层岩性、地质构造以及河流侵蚀是滑坡形成的基础，而降雨和人类工程活动是其形成的诱发因素。

Based on the data obtained in the engineering geologic investigation , this paper makes analysis and evaluation on the landforms and formation lithology of Xiashijiazhuang Reservoir .

研究区属滇西横断山系的南部，地势总体上北高南低，主要山脉和水系呈近南北向延伸，主要地貌类型为怒江峡谷深切地貌和季节性河流侵蚀地貌。

The main mountain range and the water are of north-south extended and the main landscape types are the Nujiang deep canyon topography and the seasonal river erosion landform .

哈尔滨市松花江断面正处于河流侵蚀与堆积交替动态平衡中，可不断提供新的活性表面，使河底沉积物的净化作用持久不衰。

The function of the deposit substance on the bed of river is invariable because the section of Songhua River can supply new active surface when it is in alternatively dynamic balance of river erosion and accumulation .

河流侵蚀淤积环境地质问题主要表现在：（1）河岸侵蚀岸线后移，危及岸边居民建（构）筑物，以及交通、能源、农田、水利等公共设施的安全；

The geological problems of the fiver erosion sedimentary environment are as follows : the moving back of river shore endangers the residents , the buildings , and facilities of the transportation , energy , farmland , water conservancy near the bank ;

基于钻孔数据的多层DEM构模技术是构建沉积环境下三维地层模型的有效方法，但该方法对在河流的侵蚀和淤积交替作用下形成的地层建模效果并不理想。

Multi-DEM approach , which is based on borehole data , is flexible , speediness and effective for sedimentary formation ; but it is not suited for stratigraphic system controlled by fluvial erosion and aggrading action .

河谷地貌形态，可以改变河流的侵蚀、淤积作用性质；

Geomorphologic form of the river valley can change the erosion-sedimentation of river .

层序界面类型主要有不整合面、河流冲刷侵蚀作用面和岩性岩相转换面等。

The unconformity , river rejuvenation surface and lithology and lithofacies transition surface are the main types of sequence boundaries .

这是由于新构造活动、岩土体稳定性、斜坡形态、降雨强度、河流侧向侵蚀和人为活动对斜坡变形的影响所致。

All of those mentioned above is from neotectonic action , stability of rock , shape of slope , rainfall intensity , the side erosion of river and the human activities .

在河流溯源侵蚀尚未进入的分水岭上，残丘溶原、峰林盆地中，为岩溶生态良好区，但因不合理的人文开发诱发石漠。

Human activities are an major factor of the formation of stony desert in the karst pimple plain , and peak forest basin on the water parting , where headward erosion can 't occur .

调节功能主要包括水文调节、河流输送、侵蚀控制、水质净化、空气净化、区域气候调节等；

Regulating services imply the benefits obtained from the regulation of ecosystem processes , including water regulation , river transportation , erosion control , water purification and waste treatment , air quality maintenance , and climate regulation .

Petty建立的缓冲区——一些防止他施用在作物上的化学物质流入河流，防止河岸侵蚀的专用土地带。

Petty has built buffer zones -- dedicated strips of land to stop chemicals he spreads on his crops from running into the river , and to prevent bank erosion .

河流或流水的侵蚀淤积是改造地质环境的最重要因素之一。

The erosion and deposition process of river or flowing water is one of the most important factors for changing the geological environment .

天然砾石海滩的物质主要来源于河流输入、海岸侵蚀、海底侵蚀、沿岸输送、人类活动及冰川搬运等。

Material sources for natural gravel beaches include river input , cliff recession , seabed erosion , longshore drift , glacier rafting and human activities .

一方面，随着河流能量的增强，河流可能越过并侵蚀河口坝，形成分流河道侵蚀河口坝型复合式坝；

On the one hand , with the increase of energy of river , it may traverse and corrode river mouth bars , forming recombination bars of distributary channels corroding river mouth bars .

而全新世以来受区域构造抬升影响，河流下切会形成新河谷，且构造运动稳定期河流侧旁侵蚀与堆积也导致大量新阶地在低海拔区增多。

Additionally , since downcutting of rivers can form new river valley and lateral erosion and accumulation of river in stable time of tectonic movement can result in gathering of many new terraces .

第一，重庆市河流和交通沿线地质灾害空间分布的分维值与河流和交通线分维值具有一定的相关性，即河流侵蚀和道路的修建都是重庆市地质灾害的诱发因素。

First , the value between fractal dimension of spatial distribution of geological disasters that along the river and transit and fractal dimension of river and transit has some relevance , namely , the erosion of river and construction of transit are induced factors of geological disasters in Chongqing .