Testing system and testing method for measuring rock fracture multiple-phase seepage characteristics

Abstract

The invention provides a testing system for measuring rock fracture multiple-phase seepage characteristics. The testing system comprises a water supply device, a gas supply device, a multiple-phase seepage work chamber, a water collection device and a gas collection device, wherein the multiple-phase seepage work chamber comprises clamping plates compressed at the two sides of a fracture sample, an inlet end cap and an outlet end cap which are arranged on a fracture on the opposite surfaces of the fracture sample respectively, the water supply device and the gas supply device are both connected with the inlet end cap, and the water collection device and the gas collection device are both connected with the outlet end cap. Compared with other molding methods (such as miniature engraving machining), the testing system has the advantages that the structure is simple, the testing system is economical and practical, and still can complete the experimental process better under less investment, the practicability is high, and the popularization and application are convenient.

Description

technical field [0001] The invention relates to many engineering and earth science technical fields of engineering geology and hydrogeology, in particular to a test system and a test method for measuring multiphase seepage characteristics of rock fissures. Background technique [0002] Multiphase flow in rock fissures is very common, for example, it is involved in the study of rock slope landslides induced by heavy rain, nuclear waste migration, underground energy and mineral mining, and environmental engineering, and it plays an important role in the economic benefits and safety of projects. critical use. The determination of the multiphase seepage characteristics of rock fractures is the premise of analyzing the law of multiphase seepage movement in rock mass, and the multiphase seepage characteristics of rock fractures have always been a hot topic in the field of geology and technology. [0003] The multiphase seepage characteristics of rock fractures include the saturat...

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Problems solved by technology

[0004] First of all, in terms of measuring the multiphase saturation of rock fractures, the existing technology mostly uses rock fractures for experiments, and the change characteristics of the fluid phase structure inside the fractures cannot be observed, and it is difficult to measure the local saturation of the fractures; secondly, in the capillary pressure In terms of measurement, the existing technology mostly drills holes in rock fissures, and inserts the tensiometer into the rock fissure for measurement. On the one hand, it damages the part of the fissure, and on the other hand, the position of the tensiometer has a great influence on the accuracy of measuremen

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