Manufacturing method of rock-soil pressure sensor inclusion

Abstract

The invention relates to a manufacturing method of a rock-soil pressure sensor inclusion. The manufacturing method comprises the following steps: S1, manufacturing a rock-soil pressure sensor inclusion mold; S2, fixing the rock-soil pressure sensor in the inclusion mold; S3, preparing a mortar mixture of which the density, the strength and the elasticity modulus are matched with those of the rocksoil to be measured; S4, filling a shell cavity of the inclusion mold with the glue-sand mixture manufactured in the step S3, filling the shell cavity with the glue-sand mixture, the glue-sand mixturebeing flush with the upper end face of the shell, and standing and curing are conducted; and S5, after curing is completed, disassembling the ladle body mold. The design is ingenious. The problems ofincompatibility, mismatching, inaccuracy and the like of direct measurement of the pressure sensor in severe environments such as rock soil and the like are solved. The method is suitable for being applied to dynamic process tests in media such as rock soil and the like, a protection shell is provided for electrical soil pressure sensors such as PVDF and the like, and the installation survival rate, durability and anti-interference capacity of the pressure sensor protection shell in concrete are improved.

Description

technical field [0001] The invention belongs to the field of sensor technology, and in particular relates to a method for making an inclusion of a rock-earth pressure sensor. Background technique [0002] Pressure measurement in rock and soil is an important task in the theoretical research of soil mechanics and engineering testing. Using rock and soil pressure sensors can obtain the surface pressure state of roadbeds, dams, roads, underground engineering and other structures and the stress distribution in rock and soil media State, in order to evaluate the stability of the rock mass and the working state of the structure. [0003] There is an unavoidable problem in the measurement of embedded sensors used in rock and soil media: the granular media of uneven size in the rock and soil environment and its distribution have a great impact on the measurement results of the sensor. The fundamental reason is that the sensor and The physical and mechanical properties of the medium...

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Problems solved by technology

[0004] In order to overcome the above difficulties, a variety of methods have been proposed, such as monitoring the calibration of earth pressure sensors through soil compaction, designing reasonable sensor geometric dimensions, structural forms, modulus and other parameters, theory and finite element analysis and calculation, etc., but the sensor The matching error caused by direct contact with rock and soil is a problem that always exists in the pressure measurement of the rock medium

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