A loading device suitable for high and low temperature cycle test chambers and ct scanners

Abstract

The invention relates to portable loading equipment suitable for a high-temperature and low-temperature circulating test box and a CT scanner. The portable loading equipment is characterized by comprising a baffle and a platform base which are arranged on the two sides of a device main body correspondingly; a loading motor is arranged on the outer side of the baffle; an output shaft of the loadingmotor penetrates through the baffle and is connected with a spiral connecting rod; the baffle and the platform base are connected and fixed through a plurality of pull rods; after the spiral connecting rod is connected with a loading pressing head, load is transmitted to a loading end plate connected with the loading pressing head; a fixed base is arranged on the inner side of the platform base;clamps are arranged on the loading end plate and the fixed base oppositely and are used for clamping test samples; and an aluminum alloy pressure cabin is arranged at the periphery, near the side of the to-be-tested test sample, of the device main body. The portable loading equipment is flexible and convenient to test and simple to process, can test different cylindrical, cuboidal and cubic standard rock samples only by adjusting the hole shape of the clamps, and provides effective equipment basis for macro-microscopic freeze-thaw cycle test under the research pressure condition.

Description

technical field [0001] The invention belongs to the field of rock sample axial compression devices, in particular to a portable uniaxial compression loading device suitable for high and low temperature cycle test chambers and CT scanners. Background technique [0002] With the global warming environment, permafrost regions begin to transform into seasonally frozen regions, and the freeze-thaw degradation of rock mass in cold regions will affect the stability of natural and artificial slopes, and the intensification of freeze-thaw cycles will also affect the There are major hidden dangers in engineering safety. Under various engineering conditions, there is a significant mutual coupling relationship among the stress-strain field, temperature field, seepage field and fracture field evolution of the rock, and the pressure existing in the rock mass has a significant impact on the rock mass damage and the direction of fracture propagation. Due to the lack of equipment for freeze...

AI Technical Summary

Problems solved by technology

However, the traditional commonly used hydraulic jacks cannot be applied to the engineering conditions of high and low temperature freeze-thaw cycles. Therefore, in the process of freeze-thaw axial compression experiments in the laboratory, how to effectively simulate the actual situation of confining pressure in low-temperature rock formations? The impact caused by the rock mass will directly affect the reliability of the parameters measured by the CT scanning test, thereby affecting the cognition of the degradation characteristics of the fractured rock mass, and then affecting the rock mass engineering structure design based on these experimental parameters

[0004] In order to solve the problems that the traditional uniaxial compressor can only be loaded and unloaded but cannot be used for loading and real-time CT scanning and cannot be applied to ultra-high temperature and low temperature working conditions, the present invention intends to provide a portable uniaxial compressor suitable for high and low temperature cycle test chambers and CT scanners. Compression loading device

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