Remote controllable loading method and equipment with fluid CT (Computed Tomography) scanning

Abstract

The invention discloses a remote controllable loading method and equipment with fluid CT (Computed Tomography) scanning. In the invention, a loading mechanical device is arranged on a CT scanning rotary platform in a CT scanning shielded room, a sensor is attached on a rock sample, and transmission pipelines and circuits are communicated with an outside pressure container and a strain tester through a rotating transfer head, thus the effective connection of the pipelines and the circuits in the rotating process of the loading mechanical device is guaranteed; and the remote axial and / or circumferential loading control in the CT shielded room can be realized through a pressure control device arranged outside the CT shielded room. The invention has the advantages of reappearing the stress environment of a stock, simulating a stress process, realizing the CT real-time scanning of a dynamic loading process of the CT shielded room in an unmanned operation state and avoiding dangers caused by radiation, and is particularly suitable for being popularized and used in CT scanning mechanics experiments.

Description

technical field [0001] The invention relates to a controllable loading method for mechanical experiment testing of rock mass, in particular to a remote controllable loading method including fluid CT scanning and its experimental equipment, belonging to the field of experimental mechanics. Background technique [0002] China is a large coal-producing country. According to the second national coal field forecast from 1974 to 1980, the national coal reserves buried within 2,000 meters are 5,059.219 billion tons. From the perspective of the occurrence conditions of coal deposits in China, there are not many deposits suitable for large-scale open-pit mining conditions. The vast majority of coal deposits have deep burial depths, complex coal seam distribution, stress concentration and the existence of faults. Provide conditions for the occurrence of many mine dynamic disasters , making my country's coal mine safety situation very severe. Therefore, it is of great significance to s...

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Problems solved by technology

However, the scanning electron microscope cannot reveal the microcosmic mechanism in the dynamic process, it can only detect the surface of the coal rock, and cannot obtain the internal structure of the measured target, and it is a static detection process

The transmission electron microscope is the object image produced by the electron beam passing through the sample through focusing and magnification, which is transmitted to the fluorescent screen or formed into a photo for observation. The resolution can reach 0.1-0.2nm, and the magnification is tens of thousands to hundreds of thousands of times. The penetrating power of the transmission electron microscope is extremely low, and it is easily absorbed by objects. The detected targets generally need to be in the form of ultra-thin slices, which have extremely high requirements for the specimens, so it is not suitable for the study of the perspective of coal and rock materials; in order to dynamically observe the coal body The deformation and rupture process of the gas-containing coal rock was observed by using a long-distance high-power microscope, and good experimental results were obtained. However, the results obtained can only be studied from the damage cracks on the surface of the coal rock, and the internal structure of the coal rock cannot be observed. damage changes

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