An in-situ measuring device and method for rock damage

Abstract

The invention discloses an in-situ measuring device for damage of rock. The in-situ measuring device comprises a telescopic bracket, wherein the telescopic bracket is provided with a titrating bottlecontaining titrating solution; the titrating bottle is connected with a water inlet end of a suctioning disc body by a hose; a water-absorbing filling material is arranged in the suctioning disc body;a valve is arranged on the water inlet end of the suctioning disc body or the hose. In addition, the invention also discloses a measuring method corresponding to the in-situ measuring device. The in-situ measuring device and the measuring method disclosed by the invention have the beneficial effects that a rock sample can be tested in situ in a simple and high-efficiency manner, and the damage degrees of different parts of the rock can be distinguished.

Description

technical field [0001] The invention relates to the technical field of rock damage measurement, in particular to an in-situ measurement device and method for rock damage. Background technique [0002] Many properties of rocks, such as strength, water absorption, fire resistance, frost resistance, thermal conductivity, sound absorption, etc., have a lot to do with the density of the rock structure. In addition to determining the size of the porosity, it is also related to the The structural characteristics (including pores, connectivity, and distribution) are closely related. [0003] At this stage, the non-destructive testing of rock samples mainly adopts ultrasonic testing, acoustic emission and other methods, but these methods can only be measured in indoor laboratories, and the equipment is complicated, and cannot simply and intuitively reflect the difference in porosity of rock samples. For rock sample porosity measurement methods, destructive tests are mostly used to m...

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Problems solved by technology

[0003] At this stage, the non-destructive testing of rock samples mainly adopts ultrasonic testing, acoustic emission and other methods, but these methods can only be measured in indoor laboratories, and the equipment is complicated, and cannot simply and intuitively reflect the difference in porosity of rock samples. For the measurement of rock sample porosity, most of the porosity of the rock sample is determined by destructive tests, so as to infer the overall porosity of the rock sample

However, as a large discrete material, rock is not precise in this way, and may even vary greatly. Through ordinary single capillary titration, the infiltration rate of different parts of the same rock varies greatly, and the pore structure of the rock itself is not uniform. , so there is a large dispersion in the infiltration rate

It can be seen that the infiltration rate of ordinary single capillary titration reflects the damage degree of local micro-regions. For uneven pore structures, multi-point testing is required, which undoubtedly increases the workload of the staff.

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