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Pressure relief method capable of satisfying parallel operation of tunneling and pressure relieving

A technology of parallel operation and pressure relief holes, which is applied in earthwork drilling, ground mining, mining equipment, etc., can solve the problems affecting the excavation efficiency and prolong the completion time of excavation projects, and achieve the effect of improving tunnel excavation efficiency and increasing excavation footage

Inactive Publication Date: 2016-08-24
SHAANXI ZHENGTONG COAL IND CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

It basically takes 1 day to relieve pressure and 3 days to excavate, which greatly affects the excavation efficiency and prolongs the completion time of the excavation project

Method used

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  • Pressure relief method capable of satisfying parallel operation of tunneling and pressure relieving
  • Pressure relief method capable of satisfying parallel operation of tunneling and pressure relieving

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing this design is described in detail:

[0019] see figure 1 : a kind of step that can satisfy the pressure relief method of digging and unloading parallel operation comprises:

[0020] 1) Construction drilling site: a triangular drilling site 1 is constructed on the right side of the excavation roadway. The height of the drilling site 1 is consistent with the height of the roadway. The length of the side of the drilling site 1 connected with the roadway is 7m, and the other side is parallel to the head The length is 5m, and the length of the third side is 9m;

[0021] 2) Fix the drilling rig: move the high-power deep-hole hydraulic drilling rig to the drilling site 1, and the model of the high-power deep-hole hydraulic drilling rig 2 is ZDY4000LR; fix the drilling rig in the drilling site 1, adjust the drilling position and height of the drilling machine, and the drilling position and The included angle on the right side of...

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Abstract

The invention relates to the technical field of coalmines, in particular to a pressure relief method capable of satisfying the parallel operation of tunneling and pressure relieving. The pressure relief method can increase tunneling footage and improve tunneling efficiency under the condition that pressure relief of the tunneling workface is guaranteed. The pressure relief method includes steps of 1) constructing a drilling site; 2) fixing a drilling rig; 3) constructing a pressure relief hole; 4) pulling out the drill rod; 5) sealing the hole; 6) adjusting and moving the drilling rig.

Description

technical field [0001] The invention relates to the technical field of coal mines, in particular to a pressure relief method that can satisfy parallel operations of excavation and unloading. Background technique [0002] During the tunneling process of impact coal seam roadway, it is necessary to relieve the pressure in advance. At present, the excavation of impact coal seam in my country needs to alternate between excavation and pressure relief. The main method is to construct three large-diameter pressure relief drilling holes in the front, with a drilling depth of 30m. After the construction of the head-on pressure relief drilling is completed, the excavation can be resumed, and a 10m protection zone is reserved, so the excavation is allowed to be 20m, and the excavation is stopped after reaching a safe distance, and then the construction of the pressure relief drilling is 30m, and then the excavation is 20m, and the cycle is repeated. It basically takes 1 day to relieve p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/14E21C41/18
CPCE21C41/18E21D9/14
Inventor 马金宝刘虎刘伟梁东辉陈帅
Owner SHAANXI ZHENGTONG COAL IND CO LTD
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