Double-ended water plugging detection rod, overburden rock fissure drilling and measuring integrated device and drilling and measuring method

Abstract

The invention discloses a double-ended water blocking detection rod, an integrated device for drilling and measuring cracks in overburden rock, and a drilling and measuring method, including a rod body, two plugging shells and a pressure control valve; the rod body is provided with a plugging channel and a water injection channel ; The side wall of the rod body is also provided with a water outlet connected to the water injection channel; the two sealing shells are set on the periphery of the rod body; One closed chamber; the lower closed chamber communicates with the plugging channel; the two closed chambers are connected; when water is injected into the two closed chambers and stamped, the two sealed shells expand and seal the inner wall of the borehole respectively; pressure control valve It is arranged on the water injection channel on the upper part of the water outlet; when the closed chamber is filled with water and punched, the pressure control valve is closed; when the closed chamber is relieved of pressure, the pressure control valve is opened. The invention synchronizes the drilling and overburden detection, simplifies the laying of other pipelines and lines in the drilling, and improves the reliability and safety of detection.

Description

technical field [0001] The invention belongs to the field of coal mine monitoring equipment, and in particular relates to a double-ended water blocking detection rod, an integrated device for drilling and measuring cracks in overburden rock, and a drilling and measuring method. Background technique [0002] After mining in the underground working face of the coal mine, the overlying rock in the goaf appears collapsed zone, fissure zone and curved subsidence zone from bottom to top. Since the water-conducting fissure zone has a good water-conducting channel, when it is carried out under the water body or on the ecologically fragile surface During underground coal mining, the determination of the development height of the water-conducting fracture zone is of great significance for ensuring the safety of the working face and maintaining the balance of the surface ecological environment. [0003] Most of the existing testing equipment for the development height of overlying rock...

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Problems solved by technology

[0006] In order to solve the above problems, the present invention provides a double-ended water blocking detection rod, an integrated device for drilling and measuring cracks in the overlying rock, and a drilling and measuring method. The drilling and overlying rock detection are carried out synchronously, which overcomes the measurement error caused by drilling in advance , to avoid the problem that the detection hole cannot be detected due to the collapse of the detection hole; at the same time, the workload in the early stage of detection is reduced, and the labor intensity of workers is reduced; the laying of other pipelines and lines in the borehole is simplified, and the reliability and safety of detection are improved. sex

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