A kind of compressive strength test system and test method of mine-used microcapsule inhibitor

Abstract

The invention discloses a compressive strength test system and test method of microcapsule inhibitors for mining. The pressure control part of the test system includes a hydraulic pump station and a main loading hydraulic cylinder, and the main loading hydraulic cylinder is fixedly installed on the test platform; The part includes auxiliary loading hydraulic cylinder and pressure vessel. The piston II of the auxiliary loading hydraulic cylinder and the piston I of the main loading hydraulic cylinder are connected by a piston rod to form an integrated structure. It is connected to the large chamber end of the auxiliary loading hydraulic cylinder, and the pressure vessel is provided with a microcapsule inhibitor injection port and a mixed liquid discharge port; the detection part includes a liquid chromatograph connected to the mixed liquid discharge port through a sampling pipeline. The invention can accurately measure the compressive strength of the microcapsule inhibitor under the premise of accurately restoring the real pressure of the microcapsule inhibitor in the high-pressure pipeline transportation process, and can provide a theoretical basis for determining a suitable pipeline injection pressure and data support.

Description

technical field [0001] The invention relates to a compressive strength test system and a test method, in particular to a test system and a test method suitable for performing a compressive strength test on a mine-used microcapsule inhibitor, and belongs to the technical field of mine fire-extinguishing and chemical resistance. Background technique [0002] In the process of coal mining, coal spontaneous combustion is one of the main natural disasters that threaten the safety of coal mining. Spontaneous coal combustion not only damages and wastes coal resources, but also produces toxic and harmful gases that pose a serious threat to the physical and mental health of personnel. Under certain conditions, it may even lead to major vicious accidents such as gas and coal dust explosions, which seriously threaten the safe production of mines. [0003] In the prior art, it is usually used to inject flame-retardant slurry, or inject inert gas, or inject flame-retardant foam, or injec...

AI Technical Summary

Problems solved by technology

However, due to the soft texture of the wall of the microcapsule inhibitor, it is very easy to be crushed and ruptured when transported in the high-pressure pipeline, which will lead to the loss of the inhibitor core material, so the expected inhibitor effect is often not achieved.

At present, there is still no effective and feasible method to accurately measure the compressive strength of microcapsule inhibitors, and conventional uniaxial compressive strength test systems and triaxial compressive test systems for rock samples or coal samples cannot accurately restore microcapsules. The actual pressure of the chemical inhibitor during the high-pressure pipeline transportation process, and the microcapsule inhibitor particles are small, it is difficult to observe its pressure rupture during the test

Images