Directional hydraulic coal digging device and method

A technology of hydraulic and directional drilling rigs, applied in directional drilling, hydraulic mining, earthwork drilling and mining, etc., to achieve the effect of improving safety and improving coal extraction efficiency

Pending Publication Date: 2021-02-26
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem that it is impossible to carry out effective and all-round accurate coal digging op...

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  • Directional hydraulic coal digging device and method
  • Directional hydraulic coal digging device and method
  • Directional hydraulic coal digging device and method

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Embodiment Construction

[0028] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0029] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time, terms such as "upper",...

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Abstract

The invention belongs to the technical field of underground coal mine operation, particularly relates to a directional hydraulic coal digging device and method. The device solves the problem that coaldigging operation cannot be performed on a coal face or other long-distance, effective and all-around accurate coal digging operations. The device comprises a directional drilling machine used for achieving long-distance precise drilling and coal digging, a common high-pressure sealing drill rod, an upper non-magnetic high-pressure sealing drill rod, a high-pressure sealing exploring tube, a lower non-magnetic high-pressure sealing drill rod, a flow water jet cutter and a drill bit, wherein a water jet cutter head and a water jet cutter tail of the flow water jet cutter are detachably connected, low-pressure water enters the water jet cutter tail, then flows out of the water jet cutter head and finally enters the drill bit to achieve directional drilling operation, and high-pressure waterenters and flows to the water jet cutter tail and then is sprayed out from small cutting holes of the flow water jet cutter, so that directional hydraulic coal digging operation is realized. The directional hydraulic coal drawing method comprises the following steps of S1,carrying out directional drilling operation; and S2, carrying out directional hydraulic coal digging operation. According to the device and the method, long-distance accurate drilling and coal digging operation can be achieved, and the effect of rapid and safe outburst elimination is achieved.

Description

technical field [0001] The invention belongs to the technical field of coal mine underground operations, and in particular relates to a directional hydraulic coal dredging device and method. Background technique [0002] Gas control is the first priority of coal mine safety production, and gas drainage is the fundamental measure for gas control and prevention of coal mine gas disasters and accidents. Aiming at the difficult and dangerous problem of gas drainage in soft layers in coal seams, pressure relief and permeability enhancement measures are mainly adopted to increase the gas permeability coefficient of coal, reduce the gas content and pressure of soft layers, improve the efficiency of gas drainage, and eliminate In recent years, from the perspective of safety, hydraulic anti-reflection measures have become the development trend of pressure relief and anti-reflection. [0003] Ordinary bed-through and bedding-drilling hydraulic coal dredging measures have been widely ...

Claims

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Application Information

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IPC IPC(8): E21B7/04E21B7/18E21C45/00
CPCE21B7/04E21B7/18E21C45/00
Inventor 刘毅刘发义曹国华姚盼盼王晋峰解志胜张晓铭吕军锋韩金鑫辛宪耀张国亮刘伟
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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