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Development and application of multi-field coupled high-pressure triaxial apparatus for soil

Journal of Groundwater Science and Engineering 2023年第3期11卷 308-316页

作者： Xiu-yan Wang Lin Sun Shuai-wei Wang Ming-yu Wang Jin-qiu Li Wei-chao Sun Jing-jing Wang Xi Zhu He Di Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological SciencesShijiazhuang 050061China SuperMap Software Co. Ltd.Beijing 100000China

The increasing severity of ground subsidence,ground fissure and other disasters caused by the excessive exploitation of deep underground resources has highlighted the pressing need for effective management.A significant contributing factor to the challenges faced is the inadequacy of existing soil mechanics experimental instruments in providing effective indicators,creating a bottleneck in comprehensively understanding the mechanisms of land *** is urgent to develop a multi-field and multi-functional soil mechanics experimental system to address this *** soil mechanics theories,the existing manufacturing capabilities of triaxial apparatus and the practical demands of the test system,a set of multi-field coupled high-pressure triaxial system is developed tailored for testing deep soils(at depths of approximately 3000 m)and soft *** system incorporates specialized design elements such as high-pressure chamber and horizontal deformation testing *** addition to the conventional triaxial tester functions,its distinctive feature encompass a horizontal deformation tracking measuring device,a water release testing device and temperature control device for the *** ensemble facilitates testing of horizontal and vertical deformation water release and other parameters of samples under a specified stress conditions,at constant or varying temperature ranging from-40℃–90℃.The accuracy of the tested parameters meets the requirements of relevant current *** test system not only provides scientifically robust data for revealing the deformation and failure mechanism of soil subjected to extreme temperature,but also offers critical data support for major engineering projects,deep exploration and mitigation efforts related to soil deformation-induced disaster.

关键词： Multi-field coupled triaxial test high and low temperature Horizontal deformation Compressed water release

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FDR soil moisture sensor for environmental testing and evaluation

FDR soil moisture sensor for environmental testing and evalu...

引用

2010 2nd International Conference on Multimedia and Computational Intelligence (ICMCI 2010)

作者： Ye Linmao Xue longqin Zhang guangzhou Chen haibo Shi likuai THE METEOROLOGY INSTITUTE OF HENAN ZHENGZHOU Wu zhigang Yu gouhe ai Wang yanbin Niu sujun Ye Jin Jin Qi .ZHONGYUAN OPTO-ELECTRONIC MEASURMENT & CONTROL TECHNOLOGY LTD. ZHENGZHOU

To test the affect of environmental stresses on a adaptability of soil moisture capacitance sensor（FDR） a number of stresses were induced including vibrational shock as well as temperature and humidity through the use of a CH-I constant humidity chamber with variable temperature. A Vibrational platform was used to exam the resistance and structural integrity of the sensor after vibrations simulating the process of using, transporting and handling the sensor. A Impactive trial platform was used to test the resistance and structural integrity of the sensor after enduring repeated mechanical shocks. An CH-I constant humidity chamber with high-low temperature was used to test the adaptability of sensor in different environments with high temperature, low temperature and constant humidity. Otherwise, scope of magnetic force line of sensor was also tested in this paper. Test show:the capacitance type soil moisture sensor spread a feeling machine to bear heat, high wet and low temperature, at bear impact and vibration experiment in pass an examination, is a kind of environment to adapt to ability very strong instrument;Spread a feeling machine moreover electric field strength function radius scope 7 cms.

关键词： FDR capacitance vibration high and low temperature magnetic force line

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