Double-stage roof and floor surrounding rock damage range observation system

Abstract

The invention discloses a two-stage roof and floor surrounding rock damage range observation system, which belongs to the technical field of damage range measurement of mine floor rock mass. It includes a plugging system, a guiding system, a leak detection system and a propulsion supply system, the leak detection system includes a first connecting pipe, a second connecting pipe, a first transfer switch and a second transfer switch, the first transfer switch and the second transfer switch The structure is the same, it includes a cylindrical chamber, a base body, a sliding valve and a spring are arranged in the cylindrical chamber, the base body is provided with water guide hole 2 and water guide hole 3, the slide valve is provided with water guide hole 1, and the slide valve It can slide freely inside the cylindrical chamber, and the first water guide hole can form two independent water guide channels with the second water guide hole and the third water guide hole respectively. The invention can realize one-time blocking and two-stage one-time measurement of the observation system; also realizes one-time expansion of the sealing capsule under the same water source, and ensures the stability of the sealing capsule during the sealing process and the detection process.

Description

technical field [0001] The invention relates to the technical field of measuring the damage range of mine floor rock mass, in particular to a two-stage roof and floor surrounding rock damage range observation system. Background technique [0002] The measurement of the damage range of rock mass on the roof and floor of mine is an important parameter to indicate the occurrence state of coal rock. It is a key basic parameter in the study of mine water prevention and control. Therefore, to study the formation of water-conducting channels in mining surrounding rocks, it is necessary to grasp the movement rules of rock strata and determine the damage range of roof and floor rock mass. Numerical simulation, empirical formula prediction, field measurement and other methods are usually used. However, due to the complex site conditions, to a certain extent, the numerical simulation cannot reflect the site conditions well, and the blindness of the empirical formula is relatively larg...

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Problems solved by technology

However, due to the complex site conditions, to a certain extent, the numerical simulation cannot reflect the site conditions well, and the blindness of the empirical formula is relatively large. As the mining depth increases, the applicability of the empirical formula becomes worse and worse.

[0003] The technical deficiencies in the existing research reports on this aspect of the prior art are as follows: First, due to the excessive number of pipelines working at the same time in the existing observation equipment, especially during the propulsion process, the problem of pipeline entanglement in the borehole is prone to occur Secondly, the existing observation equipment generally requires two sets of detection pipelines, which are respectively pushed upwards, and there is a problem of fixing the inner and outer detection pipelines; finally, the traditional swelling capsules need to be filled with water separately, which is cumbersome and difficult to work. The amount is large, and the existing technology fails to solve the above three problems at the same time

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