CAJ | 학술논문

采用室内模型试验与图像分析相结合的方法对单向水流作用下管袋坝芯砂体破坏并沿袋间接缝流失的相关问题进行了较为系统的研究。结合颗粒运动特点和水流水力特性变化特点阐明了单向流作用下颗粒输移模式，包括沟槽模式和全断面整体推移模式两种类型；探究了砂箱（坝芯）砂体失稳区域，试验表明砂箱内的砂体失稳区域主要集中在砂箱出口上部倒锥体区域；详尽地分析了颗粒在管路（袋间接缝）中的输移过程和沟槽的形成特点，发现颗粒运动路径主要集中在管路上表面附近区域，输移过程表明颗粒与水流之间的相互作用贯穿砂体破坏及颗粒输移的整个过程；并分析了管路颗粒输移过程中不同颗粒的空间分布特点。
채용실내모형시험여도상분석상결합적방법대단향수류작용하관대패심사체파배병연대간접봉류실적상관문제진행료교위계통적연구。결합과립운동특점화수류수력특성변화특점천명료단향류작용하과립수이모식，포괄구조모식화전단면정체추이모식량충류형；탐구료사상（패심）사체실은구역，시험표명사상내적사체실은구역주요집중재사상출구상부도추체구역；상진지분석료과립재관로（대간접봉）중적수이과정화구조적형성특점，발현과립운동로경주요집중재관로상표면부근구역，수이과정표명과립여수류지간적상호작용관천사체파배급과립수이적정개과정；병분석료관로과립수이과정중불동과립적공간분포특점。
Combining laboratory model tests and image analysis, a study on the damage of geotube dam and sand losses through the seam between tubes under the action of unidirectional flow is illuminated in this paper. In connection with the characteristics of particle motion and changes of hydrodynamics, the way of sand losses is illustrated, which include two modes, the groove mode and the full-face integral moving mode. The instable region in sand box which used to simulate the dam core is explored. It is shown that the instable region in sand box concentrates in the inverted cone area above the sand box export. The fea?tures of particles transport in pipeline which used to simulate seam between tubes and features of the trench formation are analyzed in detail, and it is found that the motion path of particles in the pipeline concentrates in its surface area. The interaction between particles and water exists throughout the process of damage and core sand losses. Meanwhile,the spatial distribution characteristics of different particles are an?alyzed in the transport process in pipeline.