水利学报
水利學報
수리학보
2014年
12期
1493-1498
,共6页
蔡红%温彦锋%魏迎奇%梁建辉%肖建章
蔡紅%溫彥鋒%魏迎奇%樑建輝%肖建章
채홍%온언봉%위영기%량건휘%초건장
污染因子%迁移%低渗透性土%离心模拟
汙染因子%遷移%低滲透性土%離心模擬
오염인자%천이%저삼투성토%리심모의
pollution factor%migration%low permeability soil%centrifuge modeling
污染因子在土壤中迁移机理在室内多采用土柱试验开展研究,但对于低渗透性土壤(<10-5 cm/s),由于土壤渗透过程极其缓慢,其试验过程漫长甚至无法完成试验。离心模拟试验技术不但能够模拟重力场,而且也可以模拟污染物的迁移过程。本文利用 LXJ-4-450 g-t离心机,通过专门研制的离心模拟试验装置,对惰性污染因子Cl-在低渗透性饱和黏土中的长期迁移规律进行了离心模拟试验研究,并对其在低渗透性饱和黏土中的迁移规律进行了模拟分析。研究结果表明,对低渗透性黏土采用离心模拟试验开展污染物迁移规律的研究可极大提高试验效率和可靠度。
汙染因子在土壤中遷移機理在室內多採用土柱試驗開展研究,但對于低滲透性土壤(<10-5 cm/s),由于土壤滲透過程極其緩慢,其試驗過程漫長甚至無法完成試驗。離心模擬試驗技術不但能夠模擬重力場,而且也可以模擬汙染物的遷移過程。本文利用 LXJ-4-450 g-t離心機,通過專門研製的離心模擬試驗裝置,對惰性汙染因子Cl-在低滲透性飽和黏土中的長期遷移規律進行瞭離心模擬試驗研究,併對其在低滲透性飽和黏土中的遷移規律進行瞭模擬分析。研究結果錶明,對低滲透性黏土採用離心模擬試驗開展汙染物遷移規律的研究可極大提高試驗效率和可靠度。
오염인자재토양중천이궤리재실내다채용토주시험개전연구,단대우저삼투성토양(<10-5 cm/s),유우토양삼투과정겁기완만,기시험과정만장심지무법완성시험。리심모의시험기술불단능구모의중력장,이차야가이모의오염물적천이과정。본문이용 LXJ-4-450 g-t리심궤,통과전문연제적리심모의시험장치,대타성오염인자Cl-재저삼투성포화점토중적장기천이규률진행료리심모의시험연구,병대기재저삼투성포화점토중적천이규률진행료모의분석。연구결과표명,대저삼투성점토채용리심모의시험개전오염물천이규률적연구가겁대제고시험효솔화가고도。
Study on the migration mechanism of pollution factor in the soil is normally carried out with soil column test in laboratory,but for the low permeability soil (permeation coefficient less than 10-5cm/s), the permeability process in the soil is very slow, and the test process is very long or even unable to com?plete. The centrifuge model test can simulate not only the gravity field, but also the migration process of pollutants. In this paper, by using LXJ-4-450 g-t centrifuge together with the specially developed device for permeability test,the long-term migration pattern of inert pollution factor Cl- in low permeability saturat?ed clay is studied in the centrifugal model,and the migration pattern of pollution factor Cl- in low permea?bility saturated clay are analyzed. The results show that simulation test study on pollutant migration in low permeability clay in the centrifugal model is feasible,and greatly improves the test efficiency and reliability.