Drilling system for weakly cemented rock specimens

Abstract

Drilling system for weakly cemented rock specimens, including radial drill, fixture, sealing connection device, dust suction system, air guide pipe, wind gathering cover, air volume regulating valve and blower; the fixture is set on the platform of the radial drill, The blower is installed on one side of the radial arm drill. The drill pipe of the radial arm drill is hollow. The lower end of the drill pipe is coaxially connected with the drill barrel. The baffle above the drill barrel, the air outlet of the blower is connected to one end of the air guide pipe through the wind collecting cover, the other end of the air guide pipe is connected to the sealing connection device, and the air outlet of the sealing connection device is connected to the inner wall of the drill pipe; the air volume regulating valve It is installed on the air guide pipe; the invention effectively avoids the debris accumulation in the process of processing the weakly cemented rock standard sample and causes the drill sticking in the process of the test piece, avoids the phenomenon that the drilling is not smooth, and adopts the air cooling method to ensure that the test piece Integrity, and vacuum the site to avoid dust pollution of the working environment.

Description

technical field [0001] The invention belongs to the technical field of weakly cemented rock research experiments, and in particular relates to a drilling system for rock weakly cemented rock specimens. Background technique [0002] Weak cementation is a typical cemented state of rock formations in the western region. The internal cracks and pores are well developed, the degree of cementation is relatively poor, and the cohesion is relatively low, resulting in relatively poor mechanical properties of rocks, relatively low strength, and low load-bearing capacity. After the water, the rock surface begins to crack, and the rock has a tendency to gradually disintegrate. However, with the transfer of the national energy strategy, the development of energy in the western region has been intensified, and weakly cemented rocks have to be exposed to more extensively in practice. However, the research on the physical and mechanical properties of weakly cemented rocks is far from meetin...

AI Technical Summary

Problems solved by technology

However, with the transfer of the national energy strategy, the development of energy in the western region has been intensified, and weakly cemented rocks have to be exposed to more extensively in practice. However, the research on the physical and mechanical properties of weakly cemented rocks is far from meeting the needs of actual production. Therefore, it is necessary to analyze the physical and mechanical properties of weakly cemented rocks in the western region, and establish a relatively complete mechanical system for weakly cemented rocks, so as to better guide the actual production

The research on engineering rock mass often starts with a series of related experiments in the laboratory. However, due to the relatively low degree of bonding between the weakly cemented rock particles, the rock is easily broken, and it is difficult to process through conventional rock specimen processing methods. forming

[0003] At present, the processing technology of rock material specimens in the laboratory is mostly to add water in the drilling project, but under the action of water, the weakly cemented rocks are easily softened and disintegrated by water, and the processing will not form.

If the existing processing technology cannot be used to make a complete rock sample, it cannot meet the needs of the experiment, so it is urgent to improve the existing processing technology so that the processed test piece can meet the size requirements of the experiment in the laboratory

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