WO2022135222A1 - 一种水法制砂土样装置及方法 - Google Patents

一种水法制砂土样装置及方法 Download PDF

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Publication number
WO2022135222A1
WO2022135222A1 PCT/CN2021/137772 CN2021137772W WO2022135222A1 WO 2022135222 A1 WO2022135222 A1 WO 2022135222A1 CN 2021137772 W CN2021137772 W CN 2021137772W WO 2022135222 A1 WO2022135222 A1 WO 2022135222A1
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Prior art keywords
cylinder
sample preparation
sealing cover
sand
preparation device
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PCT/CN2021/137772
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English (en)
French (fr)
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兰恒星
刘鑫
张宁
秦辉
徐新钰
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长安大学
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Priority to US17/798,580 priority Critical patent/US20230087117A1/en
Publication of WO2022135222A1 publication Critical patent/WO2022135222A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/12—Dippers; Dredgers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/36—Embedding or analogous mounting of samples
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14—Suction devices, e.g. pumps; Ejector devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/38—Diluting, dispersing or mixing samples
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14—Suction devices, e.g. pumps; Ejector devices
    • G01N2001/1418—Depression, aspiration
    • G01N2001/1427—Positive displacement, piston, peristaltic
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/36—Embedding or analogous mounting of samples
    • G01N2001/362—Embedding or analogous mounting of samples using continuous plastic film to mount sample
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/36—Embedding or analogous mounting of samples
    • G01N2001/366—Moulds; Demoulding

Definitions

  • the invention belongs to the field of water method sand sample preparation, and relates to a water method sand sample preparation device and method.
  • Soil preparation is the most basic link in geotechnical experiments.
  • Scholars at home and abroad try to use freezing to take undisturbed samples, but this method has a very small scope of application, and is often dominated by soft clay, and the test cost is very high.
  • the cementation of the saturator is difficult to remove from the saturator, resulting in an incomplete frozen specimen.
  • clay it is difficult to obtain undisturbed sand because sand is easily disturbed. Therefore, it is particularly important to use appropriate remolded sand sample preparation methods to simulate sand of different origins in laboratory experiments.
  • the commonly used sandy soil sample preparation methods include the layered wet pounding method and the falling rain method. Among them, the sand rain method is used to prepare samples in the air.
  • the purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a device and method for producing sand samples by a water method, which can obtain saturated sand samples with uniform density.
  • the present invention adopts the following technical solutions to realize:
  • a water method sand sample preparation device comprising a sample preparation cylinder and a triaxial sample preparation device
  • the sample preparation cylinder includes a cylindrical cylinder, the two ends of the cylindrical cylinder are respectively sealed with an upper sealing cover and a lower sealing cover, the ends of the upper sealing cover and the lower sealing cover facing the inside of the cylinder are both provided with permeable stones, and the upper sealing cover is facing the outside of the cylinder.
  • One end is connected with a control valve, and the control valve is communicated with the inside of the cylinder;
  • the sample preparation cylinder is set in the triaxial sample preparation device, the lower end of the triaxial sample preparation device is provided with a test operation table, and the upper end of the triaxial sample preparation device is nested with a confinement ring.
  • rubber rings are provided at the joints between the upper sealing cover and the lower sealing cover and the cylinder.
  • control valve is provided with a spring retaining piston inside.
  • both ends of the cylindrical barrel are provided with internal threads
  • the peripheral surfaces of the upper sealing cover and the lower sealing cover are provided with external threads
  • the upper sealing cover and the lower sealing cover are respectively threadedly connected to both ends of the cylindrical barrel.
  • a water valve is provided at one end of the lower sealing cover facing the outside of the cylinder, and the water valve communicates with the interior of the cylinder.
  • both the upper sealing cover and the lower sealing cover are made of toughened plastic, and the cylinder is made of toughened transparent plastic.
  • Step 1 use two methods of outdoor configuration or indoor configuration to prepare sand samples
  • Step 2 Take out the lower sealing cover of the sample preparation cylinder, nest a confinement ring on the upper end of the triaxial sample preparation device, place a test bench at the bottom of the triaxial sample preparation device, place the sample preparation cylinder in the triaxial sample preparation device, and lift it up. Add the sample preparation cylinder to the triaxial sample preparation device until all the sand samples enter the triaxial sample preparation device from the sample preparation cylinder, first remove the restraint ring, and then take out the triaxial sample preparation device.
  • a pressure plate above the sand sample, use a conduit plate to extend into the sand sample through the pressure plate, apply 20-30kPa suction to the sand sample, and then take out the triaxial Sample maker, wrap latex film around the sand sample.
  • the present invention has the following beneficial effects:
  • the invention controls the air pressure inside the sample preparation cylinder through a control valve, and under the action of the air pressure difference between the atmospheric pressure and the air pressure inside the sample preparation cylinder, the original saturated sand sample can be directly extracted, and the disturbance of the soil sample is reduced.
  • the process of configuring and reshaping the saturated sand sample it can be sufficiently shaken in the culture cylinder to ensure sufficient contact between the sand and water, and finally reach a saturated state.
  • the soil samples are gradually placed inside the triaxial sample preparation device, so that saturated sand samples with uniform density can be obtained.
  • Fig. 1 is the schematic diagram of the sample preparation cylinder device of the present invention
  • Fig. 2 is the front view of the upper cover structure of the present invention.
  • FIG. 3 is a top view of the upper cover structure of the present invention.
  • Fig. 4 is the front view of the lower cover structure of the present invention.
  • FIG. 6 is a flow chart of the steps of preparing sand samples in indoor configuration according to the present invention.
  • Fig. 7 is the flow chart of the loading steps of the saturated sand sample of the present invention.
  • the water method sand sample preparation device of the present invention includes a sample preparation cylinder and a triaxial sample preparation device 11 .
  • the sample preparation cylinder includes a cylindrical cylinder 1. Both ends of the cylindrical cylinder 1 are sealed with an upper sealing cover 2 and a lower sealing cover 3 respectively. A permeable stone 4 is provided, and one end of the upper sealing cover 2 facing the outside of the cylinder 1 is connected with a control valve 5 , and the control valve 5 communicates with the interior of the cylinder 1 .
  • the upper and lower ends of the cylindrical cylinder 1 are open, the inner wall of the cylindrical cylinder 1 has internal threads at both ends, the upper sealing cover 2 and the lower sealing cover 3 are provided with external threads on the peripheral surfaces, and the upper sealing cover 2 and the lower sealing cover 3 are respectively connected with the cylinder. Both ends of the cylinder 1 are screwed together.
  • connection between the upper sealing cover 2 and the lower sealing cover 3 and the cylinder 1 is provided with a rubber ring 7 to ensure the sealing.
  • the upper sealing cover 2 and the lower sealing cover 3 are made of toughened plastic, the thickness of the upper sealing cover 2 is 2 cm, the thickness of the lower sealing cover 3 is 1 cm, and the center of the upper sealing cover 2 is provided with a threaded hole .
  • the cylindrical barrel 1 is made of tempered transparent plastic, with a thickness of 5mm and a height of 30cm.
  • the control valve 5 is made of metallic copper. Its length is 15cm.
  • the lower end of the control valve 5 is provided with a thread with a length of 2 cm, and the thread is screwed into the threaded hole in the center of the upper sealing cover 2 .
  • the control valve 5 is provided with a spring slotted piston 6, which can be opened and closed by pressing to control the air flow and form a pressure difference between the inside and outside.
  • the sample preparation cylinder When preparing sand samples by water method, the sample preparation cylinder is set in the triaxial sample preparation device 11 , the lower end of the triaxial sample preparation device 11 is provided with a test operation table 12 , and the upper end of the triaxial sample preparation device 11 is nested with a confinement ring 13 .
  • the confinement ring 13 is used to fix the three-lobed mold that constitutes the triaxial sample maker 11 .
  • Step 1 use two methods of outdoor configuration or indoor configuration to prepare sand samples
  • Step 2 install the triaxial sample preparation device 11 and the latex membrane 16 on the test operation table 12, and open the control valve 5.
  • the control valve 5 can be connected to the conduit 10, and a certain After the suction force of 20-30kPa, close the control valve 5 valve. Unscrew the lower sealing cover 3, and paste the filter paper 15 on the lower end of the sample preparation cylinder.
  • the cylindrical cylinder 1 is put into the triaxial sample preparation device 11 , and the sample cylinder is slowly lifted up, so that the sand sample is slowly added to the triaxial sample preparation device 11 .
  • the restraining ring 13 is removed after the process is completed, and the pressure plate 14 is installed above the sand sample. Suction is applied to the sand sample through the small holes in the pressure plate 14 and the conduit 10 . Remove the triaxial sample preparation device 11, wrap the latex film 16 on the peripheral surface of the sand sample, and complete the installation of the sand sample.

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  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Hydrology & Water Resources (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

一种水法制砂土样装置及方法，包括配样筒和三轴制样器(11)；配样筒包括圆柱筒(1)，圆柱筒(1)两端分别密封设置有上密封盖(2)和下密封盖(3)，上密封盖(2)和下密封盖(3)朝向圆柱筒(1)内部的一端均设置有透水石(4)，上密封盖(2)朝向圆柱筒(1)外部的一端连接有控制阀(5)，控制阀(5)与圆柱筒(1)内部连通；当进行水法制砂土样时，配样筒设置在三轴制样器(11)中，三轴制样器(11)下端设置有试验操作台(12)，三轴制样器(11)上端嵌套有约束环(13)。能够获取密度均匀的饱和砂土试样。

Description

一种水法制砂土样装置及方法 技术领域
本发明属于水法制砂土样领域，涉及一种水法制砂土样装置及方法。
背景技术
土体制样是土工实验中最基础的环节，国内外学者尝试采用冻结取原状样，但该方法适用范围很小，常以软黏土为主，且试验耗费很高，冻结完成的试样由于冰的胶结作用很难从饱和器中取出,从而形成不完整冻结试样。和黏土相比，由于砂土易扰动，很难获取原状砂土，这样一来，在室内试验中采用合适的重塑砂土制样方法来模拟不同成因的砂土就显得尤为重要。目前，常用的砂土制样方法有分层湿捣法制样方法和落雨法制样方法等。其中，砂雨法在空气中制样，虽然能够模拟砂土自然沉积的特点，但其制样密度受出砂口大小和落距的影响很难控制；而采用分层湿捣法是国内外学者研究砂土液化的常用的制样方法之一，其特点是可以制备大孔隙比的试样，但局限性也很明显，主要表现为土体分层严重，因此试样的均匀性很难控制；此外，传统砂土制样方法在饱和过程(通无气水，反压饱和)中受水力作用均容易扰动，造成土体结构性改变，从而影响试验结果。
发明内容
本发明的目的在于克服上述现有技术的缺点，提供一种水法制砂土样装置及方法，能够获取密度均匀的饱和砂土试样。
为达到上述目的，本发明采用以下技术方案予以实现：
一种水法制砂土样装置，包括配样筒和三轴制样器；
配样筒包括圆柱筒，圆柱筒两端分别密封设置有上密封盖和下密封盖，上密封盖和下密封盖朝向圆柱筒内部的一端均设置有透水石，上密封盖朝向圆柱筒外部的一端连接有控制阀，控制阀与圆柱筒内部连通；
当进行水法制砂土样时，配样筒设置在三轴制样器中，三轴制样器下端设置有试验操作台，三轴制样器上端嵌套有约束环。
优选的，上密封盖和下密封盖与圆柱筒的连接处均设置有橡胶圈。
优选的，控制阀内部设置有弹簧卡槽活塞。
优选的，圆柱筒两端设置有内螺纹，上密封盖和下密封盖周面上设置有外螺纹，上密封盖和下密封盖分别与圆柱筒两端螺纹连接。
优选的，下密封盖朝向圆柱筒外部的一端设置有水阀，水阀与圆柱筒内部连通。
优选的，上密封盖和下密封盖均采用钢化塑料制成，圆柱筒采用钢化透明塑料制成。
一种基于上述任意一项所述装置的水法制砂土样方法，包括以下步骤：
步骤一，采用室外配置或室内配置两种方式进行砂土试样配制；
室外配置时，在室外场地，打开圆柱筒的下密封盖以及控制阀，将圆柱筒与下密封盖连接的一端压入砂土内，然后关闭控制阀阀门，将圆柱筒垂直向上提出，获得砂土试样；
室内配置时，打开水法制样装置的上密封盖，将水注入圆柱筒内，将试验砂土加入圆柱筒内；然后将上密封盖与圆柱筒密封，关闭控制阀，进行振荡饱和，振荡5～10分钟，得到砂土试样；
步骤二，取出配样筒的下密封盖，在三轴制样器上端嵌套约束环，三轴制样器底部放置试验操作台，将配样筒放置在三轴制样器中，上提配样筒，使砂土试样加入到三轴制样器，直到砂土试样从配样筒中全部进入三轴制样器后，先取下约束环，再取出三轴制样器。
优选的，取下约束环后，先在砂土试样上方放置加圧板，采用导管板穿过加圧板伸入砂土试样中，给砂土试样加以20-30kPa吸力后，取出三轴制样器，在砂土试样周面包裹乳胶膜。
与现有技术相比，本发明具有以下有益效果：
本发明通过大气压强的原理，通过控制阀控制配样筒内部的气压，在大气压力与配样筒内部气压的气压差的作用下，可以直接提取原装饱和砂土样，减少了土样的扰动。基于同样的原理，在配置重塑饱和砂土样过程中，可以在培养筒内充分的震荡，保证砂土和水的充分接触，最终达到饱和状态。通过控制气压差，使得土样逐步放置在三轴制样器内部，从而能够获取密度均匀的饱和砂土试样。
附图说明
图1为本发明配样筒装置示意图；
图2为本发明上封盖结构主视图；
图3为本发明上封盖结构俯视图；
图4为本发明下封盖结构主视图；
图5为本发明下封盖结构俯视图；
图6为本发明室内配置进行砂土试样配制的步骤流程图；
图7为本发明饱和砂样装样步骤流程图。
其中：1-圆柱筒；2-上密封盖；3-下密封盖；4-透水石；5-控制阀；6-弹簧卡槽活塞；7-橡胶圈；8-配制器皿；9-漏斗；10-导管；11-三轴制样器；12-试验操作台；13-约束环；14-加压板；15-滤纸；16-乳胶膜。
具体实施方式
下面结合附图对本发明做进一步详细描述：
本发明所述的水法制砂土样装置，包括配样筒和三轴制样器11。
如图1所示，配样筒包括圆柱筒1，圆柱筒1两端分别密封设置有上密封盖2和下密封盖3，上密封盖2和下密封盖3朝向圆柱筒1内部的一端均设置有透水石4，上密封盖2朝向圆柱筒1外部的一端连接有控制阀5，控制阀5与圆柱筒1内部连通。
圆柱筒1上下两端均为开口，圆柱筒1内壁两端均有内螺纹，上密封盖2和下密封盖3周面上设置有外螺纹，上密封盖2和下密封盖3分别与圆柱筒1两端螺纹连接。
上密封盖2和下密封盖3与圆柱筒1的连接处均设置有橡胶圈7，保证密封性。
如图4和图5所示，上密封盖2和下密封盖3均采用钢化塑料制成，上密封盖2厚度为2cm，下密封盖3厚度为1cm，上密封盖2中心设置有螺纹孔。
圆柱筒1采用钢化透明塑料制成，厚度为5mm，高度为30cm。
如图2和图3所示，控制阀5由金属铜制成。其长度为15cm。控制阀5下端设置有长度为2cm的螺纹，该螺纹与上密封盖2中央的螺纹孔拧接。控制阀5内部设有弹簧卡槽活塞6，可通过按压形式实现开闭，控制气流，形成内外压强差。
当进行水法制砂土样时，配样筒设置在三轴制样器11中，三轴制样器11下端设置有试验操作台12，三轴制样器11上端嵌套有约束环13。约束环13用于固定组成三轴制样器11的三瓣模。
使用本发明所述装置进行水法制砂土样时，包括以下步骤：
步骤一，采用室外配置或室内配置两种方式进行砂土试样配制；
室外配置时，在室外场地，在室外场地，水量较丰富的情况下，打开圆柱筒1的下密封盖3以及控制阀5，将圆柱筒1与下密封盖3连接的一端压入砂土内，然后关闭控制阀5阀门，将圆柱筒1垂直向上提出，获得现场饱和的砂土试样。
室内配置时，如图6所示，首先根据不同砂土的饱和含水率，确定砂土和水的比例，取试验砂土放在配制器皿8内，打开水法制样装置的上密封盖2，将水注入圆柱筒1内，利用漏斗9将试验砂土加入圆柱筒1内；然后将上密封盖2与圆柱筒1密封，关闭控制阀5，进行振荡饱和，得到砂土试样。
步骤二，如图7所示，在试验操作台12上安装三轴制样器11，以及乳胶膜16，打开控制阀5，为保证制样成功率，控制阀5可以连接导管10，给一定的20-30kPa吸力后，关闭控制阀5阀门。拧开下密封盖3，在配样筒下端贴滤纸15。在三轴制样器11上端嵌套约束环13后，将圆柱筒1放入三轴制样器11内，缓慢上提配样筒，使砂土试样缓慢加入到三轴制样器11中，此过程完成后取下约束环13，并在砂土试样上方安装加压板14。通过加压板14内的小孔以及导管10，给砂土样加以吸力。卸下三轴制样器11，在砂土试样周面包裹乳胶膜16，完成砂土试样安装。
以上内容仅为说明本发明的技术思想，不能以此限定本发明的保护范围，凡是按照本发明提出的技术思想，在技术方案基础上所做的任何改动，均落入本发明权利要求书的保护范围之内。

Claims (8)

  1. 一种水法制砂土样装置，其特征在于，包括配样筒和三轴制样器(11)；
    配样筒包括圆柱筒(1)，圆柱筒(1)两端分别密封设置有上密封盖(2)和下密封盖(3)，上密封盖(2)和下密封盖(3)朝向圆柱筒(1)内部的一端均设置有透水石(4)，上密封盖(2)朝向圆柱筒(1)外部的一端连接有控制阀(5)，控制阀(5)与圆柱筒(1)内部连通；
    当进行水法制砂土样时，配样筒设置在三轴制样器(11)中，三轴制样器(11)下端设置有试验操作台(12)，三轴制样器(11)上端嵌套有约束环(13)。
  2. 根据权利要求1所述的水法制砂土样装置，其特征在于，上密封盖(2)和下密封盖(3)与圆柱筒(1)的连接处均设置有橡胶圈(7)。
  3. 根据权利要求1所述的水法制砂土样装置，其特征在于，控制阀(5)内部设置有弹簧卡槽活塞(6)。
  4. 根据权利要求1所述的水法制砂土样装置，其特征在于，圆柱筒(1)两端设置有内螺纹，上密封盖(2)和下密封盖(3)周面上设置有外螺纹，上密封盖(2)和下密封盖(3)分别与圆柱筒(1)两端螺纹连接。
  5. 根据权利要求1所述的水法制砂土样装置，其特征在于，下密封盖(3)朝向圆柱筒(1)外部的一端设置有水阀，水阀与圆柱筒(1)内部连通。
  6. 根据权利要求1所述的水法制砂土样装置，其特征在于，上密封盖(2)和下密封盖(3)均采用钢化塑料制成，圆柱筒(1)采用钢化透明塑料制成。
  7. 一种基于权利要求1-6任意一项所述装置的水法制砂土样方法，其特征在于，包括以下步骤：
    步骤一，采用室外配置或室内配置两种方式进行砂土试样配制；
    室外配置时，在室外场地，打开圆柱筒(1)的下密封盖(3)以及控制阀(5)，将圆柱筒(1)与下密封盖(3)连接的一端压入砂土内，然后关闭控制阀(5)阀门，将圆柱筒(1)垂直向上提出，获得砂土试样；
    室内配置时，打开水法制样装置的上密封盖(2)，将水注入圆柱筒(1)内，将试验砂土加入圆柱筒(1)内；然后将上密封盖(2)与圆柱筒(1)密封，关闭控制阀(5)，进行振荡饱和，振荡5～10分钟，得到砂土试样；
    步骤二，取出配样筒的下密封盖(3)，在三轴制样器(11)上端嵌套约束环(13)，三轴制样器(11)底部放置试验操作台(12)，将配样筒放置在三轴制样器(11)中，上提配样筒，使砂土试样加入到三轴制样器(11)，直到砂土试样从配样筒中全部进入三轴制样器(11)后，先取下约束环(13)，再取出三轴制样器(11)。
  8. 根据权利要求7所述的水法制砂土样方法，其特征在于，取下约束环(13)后，先在砂土试样上方放置加圧板，采用导管(10)板穿过加圧板伸入砂土试样中，给砂土试样加以20-30kPa吸力后，取出三轴制样器(11)，在砂土试样周面包裹乳胶膜(16)。
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