The Sampling Method of Irregular Undisturbed Fractured Rock Grooving and Glue Injection

Abstract

The invention discloses a sampling method for cutting grooves and injecting glue for irregular undisturbed fractured rocks; the undisturbed rock samples required for conventional indoor seepage tests are mostly drilled by drilling tools with fixed specifications, and it is difficult to obtain rock samples with specific specifications containing effective cracks according to the purpose of indoor testing , it is impossible to avoid the problem of test error caused by the size effect of a single specification sample. The technical plan adopted includes the following steps: Step 1, delineate the inspection area; Step 2, divide the two types of cracks into shear and tension; Step 3, mark the sampling contour; Step 4, cut the vertical groove; Step 5, foam The thin plate is placed in the trench outline and the gap for glue injection is reserved; step 6, glue injection in layers; step 7, excavation of the transverse trench; step 8, obtaining irregular and undisturbed fractured rocks. The advantage is that the sampling purpose of the present invention is clear, and the sampling target is highly targeted.

Description

technical field [0001] The present invention relates to a sampling method of irregular undisturbed fissure rock grooving and injecting glue, which is a key to obtain large-sized, irregular and undisturbed rock samples for indoor seepage testing so as to quantitatively characterize key areas such as rock slopes or nuclear waste disposal warehouses. Efficient method for hydraulic characterization of geological bodies. At the same time, it is also a necessary prerequisite for classifying and evaluating the inherent water conductivity properties of various rock mass fractures, distinguishing the differences in hydraulic conductivity of different types of fractures, and identifying rock mass water-controlling fracture groups. The invention is suitable for the quantitative characterization of the water-conducting properties of key water-conducting geological bodies in key areas such as rocky slopes or nuclear waste disposal warehouses, which are likely to induce geological disasters...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the undisturbed samples required for the indoor investigation of the seepage characteristics of the existing fractured rock mass are mostly drilled by fixed specification drilling tools, it is difficult to capture non-standard specimens containing specific fractures according to the research requirements, and it is unavoidable to have a single Difficulty of test error caused by size effect of specification sample

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