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

A water detection, double-ended technology, which is applied to the valve device, drill pipe, drill pipe and other directions of the wellbore/well, can solve the problem of undetectable, and achieve the effect of reducing workload, facilitating popularization and use, and avoiding undetectable.

Active Publication Date: 2021-08-03
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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

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Embodiment Construction

[0040] Such as figure 1 , the present invention proposes a double-ended water blocking detection rod, which includes a rod body 1, two ring-shaped sealing shells 2 made of elastic material and a pressure control valve.

[0041] The rod body 1 is provided with an axial blocking channel 101 and a water injection channel 102 ; the side wall of the rod body 1 is also provided with a water outlet 103 ; the water outlet 103 communicates with the water injection channel 102 .

[0042] Such as figure 2 with Image 6 , the two sealing shells 2 are set on the outer periphery of the rod body 1, and are respectively located at the upper and lower parts of the water outlet 103; the upper edge of each sealing shell 2 is sealed and connected with the outer periphery of the rod body 1; each sealing shell The lower edge of the layer 2 is sealed and connected to the outer periphery of the rod body 1; each of the sealing shell layers 2 and the outer wall of the rod body 1 form a closed cavity...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/00E21B34/08E21B49/00E21B33/13E21B43/26
CPCE21B17/00E21B33/13E21B34/08E21B43/26E21B49/00
Inventor 徐强姚强岭于利强夏泽马军强山长昊郑闯凯
Owner CHINA UNIV OF MINING & TECH
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