A rock triaxial press for simulating ultrahigh pressure and high temperature geological conditions
A technology with geological conditions and ultra-high pressure, which is applied in the direction of using stable tension/pressure to test the strength of materials, instruments, measuring devices, etc. Long-term stable loading, ensure ultra-high pressure bearing capacity, and meet the effect of short-term loading
Active Publication Date: 2019-10-25
NORTHEASTERN UNIV LIAONING
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Problems solved by technology
[0004] At present, there are not many rock presses that can meet ultra-high pressure loading, and the ultra-high pressure loading structure design of rock presses is relatively traditional, which can only meet short-term loading and cannot achieve long-term stable loading
In addition, in order to apply high temperature at the same time of ultra-high pressure loading, it is chosen to directly heat the confining pressure medium, so the heater needs to be in direct contact with the confining pressure medium, and impurities will be mixed in the confining pressure medium during the heating process, which inevitably affects the adverse effects of the pressure environment
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[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0020] Such as Figure 1~3 As shown, a rock triaxial press for simulating ultra-high pressure and high temperature geological conditions includes an outer pressure chamber 1, an inner pressure chamber 2, a sample axial pressure loading and a bearing platform 3; the outer pressure chamber 1 and the inner pressure chamber The pressure chambers 2 are all cylindrical structures, the outer pressure chamber 1 is sealed and fitted outside the inner pressure chamber 2, and the annular transition confining pressure chamber 4 is formed between the outer pressure chamber 1 and the inner pressure chamber 2, and the outer pressure chamber 1 and the inner pressure chamber The axial centerlines of the chamber 2 coincide and are vertically arranged; the axial pressure loading of the sample and the bearing table 3 adopt an integrated cylindrical struc...
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A rock triaxial press used to simulate ultra-high-pressure and high-temperature geological conditions. It adopts an internal and external dual pressure chamber design and has an integrated structure of the specimen axial compression loading and load-bearing platform. The upper section is set for axial compression loading. The lower half of the cylinder is equipped with a sample holding cavity. The side of the sample holding cavity is provided with a sample access hole. The bottom of the sample holding cavity is provided with a sample pressure-bearing bump. The sample holding cavity is There is a temperature sensor on the top of the discharge chamber, an upper pressure head and a rock sample are arranged between the actuator piston rod and the sample pressure-bearing bump, and a number of heating rods are evenly distributed along the circumferential direction in the inner pressure chamber shell. The invention realizes the gradient decrease of confining pressure loading, ensures the ultra-high pressure bearing capacity, and also improves the safety during ultra-high pressure loading. It can not only satisfy short-term loading, but also achieve long-term stable loading, and the confining pressure medium does not need to be mixed with The direct contact of the heater can effectively prevent impurities from being mixed into the confining pressure medium during the heating process and avoid adverse effects on the confining pressure environment.
Description
technical field [0001] The invention belongs to the technical field of indoor rock mechanics tests, in particular to a rock triaxial press for simulating ultra-high pressure and high temperature geological conditions. Background technique [0002] Due to the decrease of shallow resources, the development of resources is gradually carried out to the deep. With the continuous increase of excavation and mining depth, the mechanical properties of deep rocks under ultra-high pressure and high-temperature geological conditions are also becoming more and more prominent. How to objectively describe super The mechanical properties of deep rock under high-pressure and high-temperature geological conditions have become the focus of engineering attention in recent years. [0003] In order to more realistically simulate the geological conditions of deep rocks, relevant technical personnel have developed various forms of rock presses, and have used these rock presses to complete a variety...
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IPC IPC(8): G01N3/18
CPCG01N3/18G01N2203/0019G01N2203/0048G01N2203/0075G01N2203/0226G01N2203/0232G01N2203/0256
Inventor 王刚张希巍韩强
Owner NORTHEASTERN UNIV LIAONING