A method for installing sensors in buffer material multi-field coupling test bench
A technology of cushioning materials and test benches, applied in the direction of analytical materials, instruments, measuring devices, etc., can solve the problems of corrosion, long operating cycle, and inability to be temporarily disassembled, and achieve the effect of ensuring consistency and easy installation and operation
Active Publication Date: 2019-09-17
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology
The buffer material multi-field coupling test bench has a long operating cycle, and once it starts running, it cannot be temporarily disassembled for maintenance. Various sensors will work in a high-temperature, high-pressure, and high-humidity environment for a long time. In addition, the buffer material bentonite and the added groundwater have a certain degree of corrosiveness
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[0026] A method for installing a sensor in a buffer material multi-field coupling test bench provided by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0027] A method for installing a sensor in a buffer material multi-field coupling test bench of the present invention comprises the following steps:
[0028] Step 1. Carry out marking and fixed points on the compacted bentonite blocks 3 of different shapes according to the pre-designed position, determine the centroid position of the sensor, and complete the hole excavation of the sensor by means of mechanical drilling and manual carving;
[0029] Step 2, such as figure 1 As shown, the displacement sensor base 5 is fixed on the steel plate at the bottom of the experimental cavity by stainless steel screws 4, the probe rod 2 and probe 1 are perpendicular to the horizontal plane, and the compacted bentonite block 3 with through holes penetr...
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The invention belongs to the field of researches of high-level waste geological disposal buffer / backfilling materials and particularly relates to a mounting method for sensors in a buffer material multi-field coupling experiment bench. The method includes the steps of firstly, determining the centroid position of the sensors, and digging holes for the sensors; secondly, fixing a displacement sensor base to an experiment cavity bottom steel plate, and allowing the probe rod of a displacement sensor to sequentially penetrate compacted bentonite blocks; thirdly, mounting temperature sensors in the compacted bentonite blocks; fourthly, allowing a temperature and humidity sensor to penetrate the compacted bentonite blocks; fifthly, allowing the induction face of a radial pressure sensor to face centroid; arranging a circumferential pressure sensor between two compacted bentonite blocks; horizontally arranging a vertical pressure sensor; arranging a pore water pressure sensor in loose soli particles; sixthly, using bentonite to fill gaps between the sensors and the holes after the senosrs are mounted. By the method, experiment feature parameters high in reliability can be obtained.
Description
technical field [0001] The invention belongs to the research field of buffer / backfill materials for geological disposal of high-level radioactive waste, and in particular relates to a sensor installation method used in a multi-field coupling test bench for buffer materials. Background technique [0002] The deep geological disposal of high-level radioactive waste adopts a multiple barrier system for disposal. As an important part of the multiple barrier system of the repository, the buffer material is an effective guarantee for the safe operation of the geological repository. In the geological repository of high-level radioactive waste, the buffer material will produce a very complex "thermo-hydraulic-mechanical-chemical" coupling phenomenon under the action of high-level radioactive waste decay heat, groundwater flow and ground stress. In order to ensure the long-term safety of the isolation barrier system, it is necessary to carry out scientific simulation tests on the mai...
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IPC IPC(8): G01N17/00
Inventor 曹胜飞刘月妙谢敬礼马利科陈亮赵星光宗自华
Owner BEIJING RES INST OF URANIUM GEOLOGY