Boundary-controlled room column type sublevel open stoping subsequent stage filling mining method

A backfill mining method and room-and-pillar technology, which can be used in backfill, surface mining, mining equipment, etc., and can solve problems such as potential safety hazards.

Inactive Publication Date: 2013-04-10
彭康
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] At present, when the stable gently-incline-steep-incline extremely thick ore bodies of the upper and lower wall rocks adopt the traditional mining method of sub-ore mining in the ore pillar segmental rock drilling stage and then filling mining, the mining of the ore house can be carried out through rock drilling in the

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  • Boundary-controlled room column type sublevel open stoping subsequent stage filling mining method
  • Boundary-controlled room column type sublevel open stoping subsequent stage filling mining method
  • Boundary-controlled room column type sublevel open stoping subsequent stage filling mining method

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Embodiment Construction

[0021] Specific use cases for the proposed mining method of the present invention are:

[0022] (1) Divide the ore body seamless pillars into panel areas, three mine houses with a width of 15m and two ore pillars with a width of 12m are arranged without interruption in the panel area. The length of the stope is equal to the thickness of the ore body. The mining sequence of Mining 1" is first the mining room and then the mining pillar; the length of the panel is 69m, the vertical height is 60m, and the vertical height of the sections is 10m, and the sections are connected by connecting roads and inclined shafts outside the vein.

[0023] (2) Mining project: stage transportation level roadway 1→connecting roadway 2→rock drilling and ore exiting horizontal roadway 3→ore exiting road 4→rock drilling and ore collecting horizontal roadway 5→ore exiting horizontal roadway 6→pedestrian inclined shaft 7→sliding Mine 8→Segmented entryway 9→Rock drilling horizontal entryway 10→Cutting ve...

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Abstract

The invention discloses a boundary-controlled room column type sublevel open stoping subsequent stage filling mining method which is used for slight pitch-steep pitch very thick and big ore bodies with firm surrounding rocks of upper plates and lower plates. The method is characterized by comprising the following steps of: dividing a plate area of the ore body, incessantly dividing three ore rooms and two ore columns in the plate area, performing step-like retrusive sublevel rock drilling stage ore removal from an upper plate to a lower plate of the ore body by adopting bottom structures of V-shaped trenches, and connecting sublevel fringe drifts through a service raise; during mining of the ore rooms, respectively tunneling rock drilling cross drifts on the two sides of a stope, controlling the boundary of the stope by adopting pre-splitting blasting in side holes, arranging ore removal routes in the ore columns for ore removal, leaving a first sublevel in the middle ore room without mining, and performing top tight filling by adopting cemented bodies with different mixture ratios; and during the mining of the ore columns, tunneling the rock drilling cross drift at the center of the stope, arranging bilateral ore removal routes in the reserved sublevel in the middle ore room for serving the two ore columns for ore removal, and performing the top tight filling on the ore columns by adopting non-cemented bodies. The method has the advantages of high safety, great production capacity, low operation cost and low loss and dilution rate of ores.

Description

technical field [0001] The invention belongs to the technical field of mining, and relates to a boundary-controlled room-and-pillar type segmental open field and subsequent stage filling mining method, which is mainly applicable to gently inclined to steeply inclined extremely thick large ore bodies with stable upper and lower wall rocks. technical background [0002] At present, when the stable gently-incline-steep-incline extremely thick ore bodies of the upper and lower wall rocks adopt the traditional mining method of sub-ore mining in the ore pillar segmental rock drilling stage and then filling mining, the mining of the ore house can be carried out through rock drilling in the ore pillar. The ore roadway is driven in and out of the mine room, but when the mine room returns to the mining pillar after mining and filling, it is necessary to excavate the ore side roadway in the filling body of the mine room and then drive in and out of the ore pillar. Mine, there is a seri...

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Application Information

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IPC IPC(8): E21C41/22E21F15/00
Inventor 彭康李夕兵赵国彦刘志祥刘爱华李启月宫凤强刘志义
Owner 彭康
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