一、功能

可实现标准UU/CU/CD抗剪强度试验、恒温恒压条件下土体材料的流变试验、梯度温控条件下（-25℃ - 常温）的UU/CU/CD抗剪强度试验、各向同性固结试验、各向异性固结试验、围压和反压梯度施加的反压饱和试验（包括孔隙水压力系数B值检测）、K0固结试验等。

1. Function

It can realize the standard UU/CU/CD shear strength test, the rheological test of soil materials under constant temperature and pressure conditions, the UU/CU/CD shear strength test under gradient temperature control conditions (-25℃-normal temperature), each Homogeneous consolidation test, anisotropic consolidation test, back pressure saturation test applied by confining pressure and back pressure gradient (including pore water pressure coefficient B value detection), K0 consolidation test, etc.

二、技术指标

1、仪器须全部适用以下试验试样尺寸：Ø39.1mm*80mm、Ø61.8mm*125mm。

2、试验腔室可以同时满足水、气体和冷冻液三种介质条件，以满拟土体环境加载压力0-2MPa所需。

3、加载自动机电控制系统：竖向加载速度：0.0001-3mm/min，加载速度设定范围：0.0001-5.0000mm/min；加载应力范围0－40MPa可调，控制精度0.3%FS；围压范围0－2MPa连续可调。

4、液压控制系统：量程0-2MPa，控制精度1kPa；全自动控制，压力范围0-2MPa连续可调；体积量程250ml、体积分辨率0.001 ml。

5、试验腔室所模拟土体环境加载过程中采用高精度液压控制器进行精确控制、快速跟踪，控制精度1kPa。

6、梯度温控区间：-25℃-常温，梯度控制；温度控制精度±1℃、分辨率0.1℃。

7、梯度温控流变试验加载压力采用外置荷重传感器测量，测试量程0-50kN，精度≤0.3%FS；流变试验加载压力采用内置荷重传感器测量，测试量程0-5kN，精度0.3%FS。

8、试验中土体竖向位移测量：量程0-50mm，精度≤0.001mm。

9、孔隙水压力测量要求全自动测量，量程0-1MPa，精度≤0.3%FS。

10、数据采集系统及数据存储系统：软件具有对系统工作状态的动态监测、跟踪分析、实时反馈、及时调整、过程显示与数据存储、及时更新的全数控自动化功能。

11、数据处理软件：土体抗剪强度试验，可以进行UU、CU、CD试验数据处理，确定土体强度参数；流变试验可在一定的土体环境加载条件下建立试验时间与土体变形的关系；梯度温控试验可在不同温度条件、一定的土体环境加载条件下，建立土体应力与应变关系，获得土体力学特性参数。

Two, technical indicators

1. The instrument must be all applicable to the following test sample sizes: Ø39.1mm*80mm, Ø61.8mm*125mm.

2. The test chamber can meet the three medium conditions of water, gas and freezing liquid at the same time, so as to meet the requirements of the simulated soil environment loading pressure of 0-2MPa.

3. Loading automatic electromechanical control system: vertical loading speed: 0.0001-3mm/min, loading speed setting range: 0.0001-5.0000mm/min; loading stress range 0-40MPa adjustable, control accuracy 0.3%FS; confining pressure range 0-2MPa continuously adjustable.

4. Hydraulic control system: range 0-2MPa, control accuracy 1kPa; fully automatic control, pressure range 0-2MPa continuously adjustable; volume range 250ml, volume resolution 0.001ml.

5. During the loading process of the simulated soil environment in the test chamber, a high-precision hydraulic controller is used for precise control and fast tracking, with a control accuracy of 1kPa.

6. Gradient temperature control interval: -25℃-normal temperature, gradient control; temperature control accuracy ±1℃, resolution 0.1℃.

7. The loading pressure of the gradient temperature control rheological test is measured by an external load cell, the test range is 0-50kN, and the accuracy is ≤0.3%FS; the rheological test load pressure is measured by the built-in load cell, the test range is 0-5kN, and the accuracy is 0.3%FS .

8. Vertical displacement measurement of soil in the test: range 0-50mm, accuracy ≤0.001mm.

9. The measurement of pore water pressure requires automatic measurement, with a range of 0-1MPa, and an accuracy of ≤0.3%FS.

10. Data acquisition system and data storage system: The software has full numerical control automation functions such as dynamic monitoring, tracking analysis, real-time feedback, timely adjustment, process display and data storage, and timely update of the working status of the system.

11. Data processing software: soil shear strength test, UU, CU, CD test data can be processed to determine soil strength parameters; rheological test can establish test time and soil deformation under certain soil environmental loading conditions The gradient temperature control test can establish the relationship between soil stress and strain under different temperature conditions and certain soil environmental loading conditions, and obtain soil mechanical characteristic parameters.

三、主要配置

1、梯度温控试验腔室2套（39.1mm61.8mm）和流变试验腔室各1套（39.1mm）；

2、50kN加载装置及加载自动机电控制系统1套；

3、2MPa高精度全自动液压控制系统2套；

4、梯度温控装置1套；

5、外置/内置荷重传感器各1个；孔隙水压力传感器1套；

6、全自动数据采集、数据分析软件1套。

Three, the main configuration

1. Two sets of gradient temperature control test chambers (39.1mm61.8mm) and one set of rheology test chambers (39.1mm);

2. 1 set of 50kN loading device and loading automatic electromechanical control system;

3. 2 sets of 2MPa high-precision automatic hydraulic control system;

4. 1 set of gradient temperature control device;

5. 1 external/built-in load sensor; 1 set of pore water pressure sensor;

6. One set of automatic data acquisition and data analysis software.