CAJ | 학술논문

堤坝(基)土体渗透变形是引起堤坝溃决和失事的主要原因，开展堤坝(基)土的渗透变形及渗透变形类型研究非常必要。在大量收集无黏性土渗透变形试验数据基础上，采用试验验证和理论分析相结合的方法，对收集到的48个工程472个无黏性土(碎砾石土、砂土)试样渗透变形试验结果中所有不均匀系数Cu≤10的土进行统计分析。结果表明：其中的碎砾石土的渗透变形类型均为管涌，而砂土的渗透变形类型均为流土。进一步从Cu≤5的无黏性土的颗粒级配曲线特征、渗透变形机制分析，论证Cu≤5的碎砾石土渗透变形类型应为管涌。
제패(기)토체삼투변형시인기제패궤결화실사적주요원인，개전제패(기)토적삼투변형급삼투변형류형연구비상필요。재대량수집무점성토삼투변형시험수거기출상，채용시험험증화이론분석상결합적방법，대수집도적48개공정472개무점성토(쇄력석토、사토)시양삼투변형시험결과중소유불균균계수Cu≤10적토진행통계분석。결과표명：기중적쇄력석토적삼투변형류형균위관용，이사토적삼투변형류형균위류토。진일보종Cu≤5적무점성토적과립급배곡선특정、삼투변형궤제분석，론증Cu≤5적쇄력석토삼투변형류형응위관용。
The seepage deformation of soil dam(foundation) is a main cause of dam burst and failure,it is therefore necessary to study the seepage deformation of dam(foundation) soil and its types. The data of 472 tests of seepage deformation on noncohesive soil(crushed gravel soil and sandy soil) from 48 projects were collected and statistical analysis was made. The results show that the seepage deformation type of crushed gravel soil is piping;and the type of seepage deformation of sandy soil is soil shifting(flow). Further analysis is made on the distribution curve of grain sizes of the noncohesive soil with Cu≤5 and the seepage deformation type of crushed gravel soil with Cu≤5 was found to be piping.