Jointed rock permeability detection method

Abstract

The invention discloses a water permeability test method of jointed rock, which includes the steps as follow: preparing a sample of natural jointed rock; putting the sample in the inner of shearer core which is arranged at the inner cavity of a shearing box, providing a test environment to simulate the natural crack of jointed rock with water and the hydraulic stress; testing and collecting the stress and the displacement of the sample as well as the flow and intake pressure and outlet pressure of the liquid surrounding the sample; controlling the loading system, the detecting system and the hydraulic system according to the mining-induced fissure of the sample, promptly testing and collecting the dynamic changing data of the crack deformation, the stress, the flow and the water pressure of the sample; analyzing and processing the testing data result, and constantly maintaining the tester of the sample balance in the whole structure through the balance system in the test. The invention has simple procedure, convenient operation, wide application range and great practicability; and the invention can precisely test the related parameter of the dilatability of natural joint and the permeability, and the test precision is high.

Description

technical field [0001] The invention relates to the technical field of rock performance detection, in particular to a method for detecting water permeability of jointed rocks. Background technique [0002] In technical fields such as mining, oil field exploitation and slope detection, it is necessary to make more accurate detection of the expansion and permeability of natural joint rocks. At present, when testing the expansibility and permeability of natural joint rocks, the following two test methods are mostly used for testing, that is, the artificial rock joint test method and the separate test method in batches. These two jointed rock experimental test methods have some obvious unreasonable places in the design of the detection method and the structure of the detection method, which seriously affect the process and results of the test detection, reduce the reliability of the experimental analysis, and increase the gap between experiment and practice. For example, when ...

AI Technical Summary

Problems solved by technology

These two jointed rock experimental test methods have some obvious unreasonable places in the design of the detection method and the structure of the detection method, which seriously affect the process and results of the test detection, reduce the reliability of the experimental analysis, and increase the gap between experiment and practice

For example, when the artificial joint test method is used for detection, it is first necessary to use similar materials to simulate joints and rock cores and manually cut the joints, and then use adhesive glue to simulate the joints. The distance between the joints reduces the practical significance of the theoretical test results, and the test results cannot meet the construction requirements

However, although the test results of the divided test method have sufficient reliability, it is difficult to find two completely consistent test pieces in nature, which affects the quality of the independent test results for the detection of natural joint properties, and cannot reach the quality of natural joints. Requirements for Expansion and Permeability Testing of Jointed Rocks

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