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Hydraulic punching and drilling three-grade coal breaking hole-blockage preventing device and method

A hydraulic punching and coal breaking technology, which is applied in the direction of drill pipe, drill pipe, drilling equipment, etc., can solve the problem of not being able to effectively solve the problem of the injection hole, and achieve the effect of solving the problem of the injection hole

Inactive Publication Date: 2019-04-02
SHANXI JINMEI GRP TECH RESEACH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no good method of hydraulic punching to prevent hole plugging. When the problem of hydraulic punching plugging is serious, three-edged drill pipes are mainly used to punch holes to slow down the effect of hole plugging, which cannot effectively solve the spray caused by punching plugging. hole problem

Method used

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  • Hydraulic punching and drilling three-grade coal breaking hole-blockage preventing device and method
  • Hydraulic punching and drilling three-grade coal breaking hole-blockage preventing device and method
  • Hydraulic punching and drilling three-grade coal breaking hole-blockage preventing device and method

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] like Figure 1-Figure 6 As shown, the present invention is a three-stage coal breaking and anti-blocking device for hydraulic punching and drilling, which is used to break the blocked coal blocks produced by hydraulic punching. Coal breaker 2 and third-level coal breaker 3, each level of coal breaker is composed of drill pipe and coal breaking nail 4 fixed on the cylinder surface of the drill pipe, first-level coal breaker 1, second-level coal breaker 2 and third-level coal breaker The number of coal-breaking spikes 4 on the first-stage coal breaker 3 increases sequentially. When the device rotates at high speed, the first-stage coal breaker 1 breaks large coal bodies into medium-sized coal bodies, and then the second-level coal breaker 2 The coal body is broken into small pieces, and finally the three-stage coal breaker 3 breaks the coal body into small coal p...

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Abstract

The invention relates to a hydraulic punching and drilling three-grade coal breaking hole-blockage preventing device and method, and belongs to the technical field of coal mine machining and manufacturing. According to the coal breaking hole-blockage preventing device, the hole spraying phenomenon caused by hydraulic measures of hydraulic punching, hydraulic flushing, hydraulic coal digging and the like is avoided. According to the technical scheme adopted for solving the technical problem, the hydraulic punching and drilling three-grade coal breaking hole-blockage preventing device is used for breaking hole-blockage coal blocks generated by hydraulic punching and comprises a first-grade coal breaker, a second-grade coal breaker and a third-grade coal breaker which are connected sequentially, each grade of coal breaker consists of a drill rod and coal breaking nails fixed to the column surface of the drill rod in a surrounding mode, and the numbers of the coal breaking nails on the first-grade coal breaker, the second-grade coal breaker and the third-grade coal breaker are increased sequentially. When the hydraulic punching and drilling three-grade coal breaking hole-blockage preventing device rotates at a high speed, the first-grade coal breaker breaks large-block coal bodies into medium-block coal bodies, then the second-grade coal breaker breaks the coal bodies into small blocks, and finally the third-grade coal breaker breaks the coal bodies into small coal particles capable of being discharged out of drilled holes smoothly.

Description

technical field [0001] The invention discloses a hydraulic punching and drilling three-stage coal breaking and anti-blocking hole device and method, belonging to the technical field of coal mine mechanical processing and manufacturing. 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 difficulty of gas drainage in low-permeability coal seams, pressure relief and permeability-enhancing measures are mainly adopted to increase the gas permeability coefficient of the coal body and improve the efficiency of gas drainage. In recent years, from the point of view of safety, hydraulic anti-reflection measures have become the development trend of pressure relief and anti-reflection. [0003] Hydraulic measures such as drilling through layers, hydraulic punching, hydraulic scouring, and hydraulic coal dredging ...

Claims

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Application Information

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IPC IPC(8): E21B7/18E21B17/00
CPCE21B7/18E21B17/00
Inventor 罗华贵尚玮炜赵学良王宁常云泽张飞康锴王润超王莉
Owner SHANXI JINMEI GRP TECH RESEACH INST
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