摘要
利用低温冻融实验和风洞模拟实验研究古代生土建筑的风蚀机理，结果表明：挟沙风风蚀速率明显大于净风的风蚀速率，其风蚀率是净风的１３０倍，冻融是风蚀速率增大的一个重要因素，偏西风的降水和风蚀是造成莫高窟古代生土建筑风蚀毁坏的方要原因。实验表明，采取５％ＬＳ和１０％ＰＳ防护材料是防止风蚀的一条重要途径。
ancient adobe construction,freezing and thawing,wind erosion Abstract Through simulating under conditions of low temperatures,freezing and thawing and inwind tunnel,wind erosion mechanism of ancient adobe construction was studied .The resultsshow that erosion rate of wind driven sands is 130 times greater than the winds. Freezing andthawing is also an important factor which causes the in crease of wind erosion. Thereforewest wind and rainfall are main causes which result in the erosion and destruction of the an-cient adobe construction at Mogao Grottoes. Experiment also shows that eroion can be pre-vented by applying 5%LS and 10%PS conservation materials.
出处
《地理研究》
CSSCI
CSCD
北大核心
1994年第4期98-104,共7页
Geographical Research
基金
甘肃省自然科学基金
中国科学院冰川冻土研究所冻土工程国家实验基金
