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Drill hole plug

A technology of hole sleeves and plugs, which is applied in the field of surface drilling, blocking mining and exploration drilling, and can solve problems such as low efficiency

Inactive Publication Date: 2013-07-24
RISE MINING DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, grouting of exploratory boreholes provides only a small amount of work and is inefficient for experienced crews unless the crew has other work to continue in the area

Method used

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Examples

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Embodiment Construction

[0057] Such as figure 1 and 2 As shown, the preferred embodiment of the grout plug 10 according to the present invention comprises a Figure 5 ) in the elongated sleeve 12 of porous material. The porous sleeve 12 contains a quantity of dry grouting material 14 in granular form. When the plug 10 is exposed to water, it mixes with the grouting material 14 to form a slurry that can be squeezed through the porous sleeve when the plug is pounded into the borehole. In this way, the grout plug 10 can be used to block the borehole once the grout material 14 has cured.

[0058] Preferably, the grout plug 10 also includes a liner 16 of water soluble material. A liner 16 is disposed within the porous sleeve 12 for containing the grouting material 14 in its dry form within the porous sleeve 12 . In use, when the plug 10 is exposed to water, the liner 16 dissolves and the water mixes with the grout material 14 to form a grout. When the plug 10 is hammered into the borehole, grout ca...

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Abstract

A grout plug (10) for plugging a drill hole (20) in a mine is disclosed. The plug (10) comprises an elongate sleeve (12) of porous material adapted to be received in a drill hole (20) and a volume of dry grout material (14) in particulate form. The plug (10) also comprises a liner (16) of water-soluble material, the liner (16) being provided within the porous sleeve (12) for containing the grout material (14) within the porous sleeve (12) in its dry form. In use, when the plug (10) is exposed to water the liner (16) dissolves and the water mixes with the grout material (14) to form a slurry which can seep through the porous sleeve (12) when the plug (10) is tamped into the drill hole (20) to block the drill hole (20) when the grout material (14) cures. A related clay plug is also described having a central core of substantially solid material of low permeability which forms a substrate against which the clay material may cure.

Description

technical field [0001] This invention relates to mining, and more particularly to blocking mining exploration boreholes. The invention has particular application for blocking subterranean diamond drill bit exploratory holes, however the product can also be applied to surface drilling. Background technique [0002] Once the underground passage is opened through the entrance or shaft for the new mine, diamond drill crews start drilling from the first available underground location to allow geologists to better define the ore body so that the mine can be optimized. design. Exploration drilling therefore typically takes place prior to mine development, and typically, exploration drilling ranges from lateral to down-dipping to delineate the underside of the ore body, and to the side of the main channel. [0003] When these exploratory drill holes are abandoned, they leave open holes between the main channel and the ore body location that will be drilled at some stage. At a lat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/13E21D20/00
CPCE21B33/1208E21B33/13E21B33/12E21B33/134
Inventor J.B.菲利普斯
Owner RISE MINING DEV