摘要
城市水土流失的特点之一是大量地下水被超量开采，而降水绝大部分被直接排出城区，造成潜水位下降，从而引起矿物质流失，土体收缩，导致地面下陷、开裂，建筑物倾斜、倒塌等危害。防治的主要措施是采取降水贮留入渗措施，如建贮留入渗林草地，高埂贮渗梯田、渗透性铺盖、入渗池、入渗塘、人渗槽、入渗井等入渗工程，在城郊建贮留入渗型小流域，并将贮留入渗纳入城市建设规划。
Soil and water loss in city is characterized as phreatic water table dropped, mineral matter lost and soil contracted, which result from ground water over extracted and most of rainfall directly drained off,it not only lead to ground subsidence and crevasse as well as building tilt and collapse. but also bring about other damages. The measure of rainfall storage and infiltration, such as establishing storage and infiltration sod, building storage and infiltration terrace with high ridge, mulching with permeability material, constructing infiltration basin,pond, trough, well and other workings, establishing storage and infiltration small watershed in suburb,and bring it into city construction programme should take as a main approach to prevent and control the soil and water loss in city.
出处
《水土保持研究》
CSCD
1997年第1期45-50,共6页
Research of Soil and Water Conservation
