Sinking technology for expanding pilot well drilled by raise-boring machine, by using vertical well heading machine

A technology of raise drilling rig and roadheader, which is applied in the direction of sinking, shaft equipment, earthwork drilling and mining, etc., and can solve the problem that there is no shaft sinking technology that can drill to the designed diameter at one time.

Active Publication Date: 2014-06-11
BEIJING CHINA COAL MINE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the case of pilot wells, there is no shaft sinking process that can drill to the designed diameter at one time

Method used

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  • Sinking technology for expanding pilot well drilled by raise-boring machine, by using vertical well heading machine
  • Sinking technology for expanding pilot well drilled by raise-boring machine, by using vertical well heading machine
  • Sinking technology for expanding pilot well drilled by raise-boring machine, by using vertical well heading machine

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Embodiment Construction

[0040] Such as Figure 6 As shown, the shaft boring machine of the present embodiment expands the sinking process of the guide well of the raise drilling machine, including the following steps:

[0041] (a) Drilling the pilot well with a raise drilling rig

[0042] First, excavate the unstable stratum on the ground, pour concrete to form the foundation of the raising drilling machine and the lock of the shaft boring machine, and install the raising drilling machine on the basis of the raising drilling machine; secondly, use the raising drilling machine from top to bottom, and the drilling diameter is 1.6 -1.8m borehole, the lower opening of the borehole is connected with the lower roadway, the deviation of the borehole is controlled at less than or equal to 0.5%, and the borehole is used as a guide well for brushing. After the guide well drilling is completed, guide the well to the lock Excavate the concrete at the mouth;

[0043] (b) Drilling with a shaft boring machine to ...

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Abstract

The invention discloses a sinking technology for expanding a pilot well drilled by a raise-boring machine, by using a vertical well heading machine, which comprises the following steps of (a) drilling the pilot well by using the raise-boring machine; (b) drilling by using the vertical well heading machine to enable the pilot well to be enlarged into a vertical well at a desirable diameter in a brushing way; (c) hanging a net on and jetting concrete onto the wall of the vertical well to form a temporary supporting well wall; (d) after enlarging in the brushing way and heading to a lower tunnel by using the vertical well heading machine, gradually removing components of the vertical well heading machine from top to bottom. By the adoption of the technology provided by the invention, in the presence of the pilot well, a vertical well hole at a design diameter is formed through the one-time drilling of the vertical well heading machine; therefore the technology is applicable for the construction of underground mine vertical well holes for coal mining, metal, nonmetal and the like.

Description

technical field [0001] The invention relates to a well-sinking process, in particular to a well-sinking process for a shaft boring machine to expand a guide well of a raise drilling machine. Background technique [0002] In the prior art, the existing rock formation mine construction projects mostly adopt the common method of sinking construction, requiring the staff to go down to the narrow and small excavation working face with a depth of several hundred meters, and use drilling rigs to drill blast holes, pack explosives, and work on the working face. Blasting, lifting the rocks broken by blasting to the ground through buckets, draining the working face, and then performing support and other operations. The level of mechanization is low, the labor input is high, the working environment is difficult, the safety conditions are poor, accidents occur frequently, and the blasting disturbs the surrounding rock greatly, the stress of the original rock changes greatly, and the sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D1/03E21D5/04
Inventor 刘志强申宝宏程守业周立王强谭昊韩云龙孙建荣汪船李志李英全
Owner BEIJING CHINA COAL MINE ENG CO LTD
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