A device for preparing saturated clay samples at different depths and a method for determining the type and content of pore water
A pore water and clay technology, which is applied in the field of indoor geotechnical testing of geotechnical engineering, can solve the problems of sample disturbance, high cost of in-situ drilling and coring, and complicated operation of mercury intrusion test, etc. Efficiency, saving test time and improving accuracy
Active Publication Date: 2021-07-09
ZHEJIANG UNIV CITY COLLEGE
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Problems solved by technology
On the one hand, the cost of in-situ drilling and coring is high, the sample is often disturbed, and the success rate of sampling cannot be fully guaranteed; on the other hand, the mercury injection test is complicated and does not support a large number of repeated test studies
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[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0041] The present invention provides a preparation device for saturated clay samples at different depths. The device includes a sample mold 1, a sample loading chamber 3 and a vertical loading device 6; the sample loading chamber 3 consists of a sample loading chamber base 3-1. The side wall 3-2 of the sample loading chamber and the top cover 3-3 of the sample loading chamber are composed.
[0042] As shown in Figure 1(a) and Figure 1(b), the loading chamber base 3-1 has an inner ring mold groove 3-1-1, an outer ring installation groove 3-1-2 and a radial water guide groove 3- 1-3; the sample mold 1 is a detachable double valve or triple valve; the base of the sample loading chamber 3-1 is equidistantly distributed with annular water guide grooves 3-1 in the range of the mold groove 3-1-1 -4; the radial water guide groove 3-1-3 passes throug...
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The invention discloses a preparation device for saturated clay samples at different depths and a method for measuring the type and content of pore water. The preparation device includes a sample mold, a sample loading chamber and a vertical loading device; the sample mold and The side wall of the sample loading chamber is respectively installed on the base of the sample loading chamber through the mold groove and the installation groove; the inside of the sample mold is equipped with the first permeable stone, the first filter paper, the clay sample, the second filter paper, the second Permeable stone, the top cover of the sample loading chamber; the sample loading chamber is installed on the vertical loading device; the invention adjusts the size of the sample mold according to the clay type and the simulated buried depth, and can be used for different types of samples under various buried depth conditions. Clay sample preparation; the present invention applies the half-amplitude point empirical judgment method to the judgment of clay pore water type, and adopts nuclear magnetic resonance technology to simply and quickly measure the type and content of pore water in clay samples at different depths, effectively saving test time , to facilitate a large number of confirmatory and exploratory experiments.
Description
technical field [0001] The invention relates to the technical field of indoor geotechnical tests of geotechnical engineering, in particular to a device for preparing saturated clay samples at different depths and a method for measuring the type and content of pore water. Background technique [0002] In my country's coastal and riverside cities and regions, the population is dense and there are many construction projects. At the same time, such areas are often distributed with deep soft clay strata. When carrying out underground engineering construction activities in these areas, such as underground space development and underground transportation construction, it is necessary to pay attention to the influence of soft clay deformation around underground buildings or structures. Usually, when soft clay releases water, it will be accompanied by deformation. Therefore, exploring the seepage and water release characteristics of soft clay will help us scientifically control the d...
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IPC IPC(8): G01N1/28G01N1/36G01N15/08G01N24/08
CPCG01N1/28G01N1/36G01N15/088G01N24/081G01N24/082G01N2001/366
Inventor 章丽莎魏骁张世民王霄邢丽孙银锁崔允亮孙苗苗
Owner ZHEJIANG UNIV CITY COLLEGE