Method for drilling hole with plastic clay for protecting wall of hole

A technology of plastic clay and drilling method, which is applied in the direction of drilling equipment and methods, earthwork drilling, drilling equipment, etc., and can solve problems such as difficulty in guaranteeing the quality of blasthole drilling, rough hole walls, and difficulty in charging charges, etc. Achieve the effects of improving the overall blasting effect, ensuring the quality of the hole, and improving the drilling efficiency

Inactive Publication Date: 2009-09-30
CHINA RAILWAY HI TECH IND CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of blasting technology, medium and deep hole blasting has been widely used in rock blasting construction. However, due to the limitations of drilling equipment, it is difficult to guarantee the quality of blasthole drilling in relatively broken rock conditions. Durin

Method used

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Embodiment Construction

[0009] Below by embodiment the present invention will be further described:

[0010] preferred embodiment

[0011] The plastic clay wall retaining drilling method comprises the following steps:

[0012] (1) Add water to the clay to make it into a plastic state;

[0013] (2) In the blast hole drilling process, when encountering a broken rock section, firstly form a hole, then put out the drilling tool, put plastic clay in the blast hole, then put the drilling tool into the drill hole, and then use the Move the drill bit up and down while rotating, let the drill bit drag and squeeze the plastic clay;

[0014] (3) After the hole is formed, the blasthole orifice is blocked, and the charge is waited.

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Abstract

The invention discloses a method for drilling a hole with plastic clay for protecting the wall of the hole, which relates to a drilling method. The invention aims to provide the method for drilling the hole with the plastic clay for protecting the wall of the hole, which can effectively prevent drill hole wall from collapsing and jamming of a drilling tool, and can improve the hole quality and charging conditions as well as the blasting effect. The aim of the invention is achieved through the following technical proposal: the method for drilling the hole with the plastic clay for protecting the wall of the hole comprises the following steps: (1) adding water to clay and blending the mixture into a plastic state; (2) in the process of drilling a bore hole, when a rock land lot is crushed, forming the hole preliminarily first, then pulling out the drilling tool, putting the plastic clay into the bore hole, putting the drilling tool into the hole again, and moving a drill bit up and down while rotating so that the drill bit drags and extrudes the plastic clay; and (3) blocking the orifice of the bore hole after the hole is formed, and waiting for charging. The method is mainly applicable for drilling holes in blasting engineering.

Description

technical field [0001] The invention relates to a drilling method, in particular to a plastic clay wall drilling method. Background technique [0002] With the continuous development of blasting technology, medium and deep hole blasting has been widely used in rock blasting construction. However, due to the limitations of drilling equipment, it is difficult to guarantee the quality of blasthole drilling in relatively broken rock conditions. During the process, hole wall collapse and drill sticking are easy to occur, and the hole wall is rough. When using emulsified strip powder roll, it is difficult to charge the powder. Therefore, how to improve the drilling quality and efficiency under the condition of broken rock has not yet been solved Methods. Contents of the invention [0003] The purpose of the present invention is to provide a kind of drilling method that can effectively prevent the wall of the borehole from collapsing and sticking under the condition of broken ro...

Claims

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Application Information

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IPC IPC(8): E21B7/00
Inventor 李健韩向红于力
Owner CHINA RAILWAY HI TECH IND CORP LTD
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