岩土力学
巖土力學
암토역학
ROCK AND SOIL MECHANICS
2013年
7期
1972-1978
,共7页
李一雯%周建%龚晓南%陈卓%陶燕丽
李一雯%週建%龔曉南%陳卓%陶燕麗
리일문%주건%공효남%진탁%도연려
电渗%电极布置%排水量%电流降低率%裂缝
電滲%電極佈置%排水量%電流降低率%裂縫
전삼%전겁포치%배수량%전류강저솔%렬봉
electroosmotic%electrode array%drainage%rate of current decrease%cracks
以提高电渗效率、改善电渗效果为目标,通过室内模型试验研究了长方形、梅花形和平行错位3种不同电极布置形式对电渗排水效果的影响。试验采用铝管电极,并保证各组试验处理面积、外加电压和处理时间一致。通过比较分析各试验排水量、电流降低率、裂缝开展和能耗系数得到以下结果:电极长方形布置时,裂缝最为规则、排水效果一般;电极平行错位布置时,排水效果最好,电流降低率最大,但从能耗系数的角度来评判仍然表现最好;电极梅花形布置时,裂缝开展最复杂,且产生了纵截面贯穿裂缝,严重影响了后期的电渗效果,但在裂缝大量开展前,其电流降低率极小。总结室内试验的结果,建议优先采用电极平行错位布置形式进行电渗处理。
以提高電滲效率、改善電滲效果為目標,通過室內模型試驗研究瞭長方形、梅花形和平行錯位3種不同電極佈置形式對電滲排水效果的影響。試驗採用鋁管電極,併保證各組試驗處理麵積、外加電壓和處理時間一緻。通過比較分析各試驗排水量、電流降低率、裂縫開展和能耗繫數得到以下結果:電極長方形佈置時,裂縫最為規則、排水效果一般;電極平行錯位佈置時,排水效果最好,電流降低率最大,但從能耗繫數的角度來評判仍然錶現最好;電極梅花形佈置時,裂縫開展最複雜,且產生瞭縱截麵貫穿裂縫,嚴重影響瞭後期的電滲效果,但在裂縫大量開展前,其電流降低率極小。總結室內試驗的結果,建議優先採用電極平行錯位佈置形式進行電滲處理。
이제고전삼효솔、개선전삼효과위목표,통과실내모형시험연구료장방형、매화형화평행착위3충불동전겁포치형식대전삼배수효과적영향。시험채용려관전겁,병보증각조시험처리면적、외가전압화처리시간일치。통과비교분석각시험배수량、전류강저솔、렬봉개전화능모계수득도이하결과:전겁장방형포치시,렬봉최위규칙、배수효과일반;전겁평행착위포치시,배수효과최호,전류강저솔최대,단종능모계수적각도래평판잉연표현최호;전겁매화형포치시,렬봉개전최복잡,차산생료종절면관천렬봉,엄중영향료후기적전삼효과,단재렬봉대량개전전,기전류강저솔겁소。총결실내시험적결과,건의우선채용전겁평행착위포치형식진행전삼처리。
Aiming at effectively improving the electroosmotic efficiency and effects, the influence of three different arrangements of the electrodes, namely rectangular array, hexagonal array, and parallel and transposition array, on the effect of electroosmotic drainage through laboratory model tests is investigated. Aluminum tube electrodes are adopted; and the treated area, applied voltage and treated time are designed to assure the consistency among the three electrode arrangements. Drainage, the rate of current decrease, cracks on the soil and coefficient of energy dissipation are analyzed and compared after the tests. It is revealed that the cracks of rectangular array are regular and its drainage effect is ordinary. Parallel and transposition array has the maximum drainage, the largest rate of current decrease as well as the best performance based on the coefficient of energy dissipation. The cracks of hexagonal array are the most complex, which run through the lengthwise section and have a strong impact on the electroosmotic efficiency at later stages. Before the extensively developing of cracks, the rate of hexagonal array’s current decrease is very small. According to the results of laboratory tests, it is recommended to employ the parallel and transposition array primarily for electroosmotic treatment.