带上下反压功能的土体渗流试验系统的研制

Development of Soil Seepage Testing System with Backpressure Function

本机是一种可对土体在三轴应力作用下的渗流性能进行测试的试验机,由轴向压力加载系统、围压室、围压加载系统、上反压加载系统、下反压加载系统、轴向测控系统、围压测控系统、孔隙水反压测控系统和数据处理系统等几部分组成。本机的最大特点是可对试样施加上下不同的压力并进行渗流量测量。本机可对试样进行恒载荷或恒变形控制,还可对试样施加特定频率和振幅变化的动态载荷。

The testing system is a kind of testing machine which can be used to test the seepage performance of soil under triaxial stress. The testing system consists of axial pressure loading system,confining pressure chamber,confining pressure loading system,backpressure loading system,axial control system,confining pressure control system,anti-pore water pressure measurement and control system and data processing system. The most important characteristic of the testing machine is that it can be used to force different pressures on the top and undersurface of the specimen and to measure the seepage discharge. The testing machine can be used to realize the constant strain control or constant load control for sample,and it can also be applied to force the dynamic load with specific frequency and specific amplitude to the specimen.