Truck collaborated ore removal type sublevel caving method with sill pillar

A segmented caving method and truck technology, which is applied in the field of segmented caving method with bottom pillars in the cooperative mining of trucks, to achieve the effects of simplifying the bottom structure, improving the degree of mechanization, and reducing the operation links of ore transfer

Active Publication Date: 2017-06-13
GUANGXI UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The present invention aims at the shortcomings of the traditional vertical deep-hole ore-falling method with bottom pillars and segmental caving, and provides a truck-coordinated mining method with bottom pillars and segmental caving

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  • Truck collaborated ore removal type sublevel caving method with sill pillar
  • Truck collaborated ore removal type sublevel caving method with sill pillar
  • Truck collaborated ore removal type sublevel caving method with sill pillar

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Embodiment Construction

[0025] The technical solutions of the present invention will be further described below through the accompanying drawings and embodiments.

[0026] Such as Figure 1 to Figure 3 As shown, the truck cooperative mining of the present invention has the sub-section caving method of the bottom pillar, comprising the following steps:

[0027] (1) Divide the inclined-steeply inclined thick orebodies or extremely thick orebodies with arbitrary inclination angles above moderate stability in the surrounding rocks of the footwall into stages. The body tendency is divided into sections, the section height is 10-25m, and the section bottom column is 6-8m high.

[0028] (2) Before mining, dig a transport roadway 1 with a specification of 4m×3m in the surrounding rock of the ore body footwall, and dig a short chute 2 with a specification of 3m×3m in the segmental bottom pillar from bottom to top. Drilling roadway 3, and through the rock drilling roadway 3, excavate a cutting level entry 6 ...

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Abstract

The invention discloses a truck collaborated ore removal type sublevel caving method with sill pillar. The method includes steps: dividing stages of inclined-steeply inclined thick ore bodies or arbitrary-inclination-angle extremely-thick ore bodies, in moderate steadiness or above, of footwall surrounding rock, and segmenting in the stages according to inclinations of the ore bodies; arranging footwall haulage ways and ramps for ore body footwall; tunneling short draw shafts and drilling drifts to the ore bodies through the footwall haulage ways; in stoping, adopting vertical fan-shaped medium-length hole caving; directly loading ores under overlying strata into trucks through the short draw shafts and ore discharging hoppers, and transporting to the ground through the ramps. A traditional vertical long hole caving type sublevel caving method with sill pillar is modified, the trucks are adopted for direct ore removal, and accordingly mechanization degree is raised, synergy of ore caving and ore removal is guaranteed, a bottom structure is simplified, ore transferring procedures are reduced, and mine production efficiency is improved.

Description

technical field [0001] The invention relates to a mining method for underground mining of metal mines, in particular to a sub-section caving method with bottom pillars for truck cooperative mining, which is suitable for inclined-steeply inclined thick mines where the ground surface allows caving and the footwall surrounding rock is moderately stable or above. body or extremely thick ore body with any dip angle. Background technique [0002] For the inclined-steeply inclined thick orebodies or extremely thick orebodies with arbitrary dip angles where surface caving is allowed and the surrounding rocks of the footwall are moderately stable or above, vertical deep hole caving with bottom pillar segmental caving method is generally adopted for mining. Mining the ore body has the advantages of high mining intensity and safe and reliable production. However, due to the use of electric rakes and shafts for ore extraction, there are also disadvantages such as complex bottom structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/22E21F13/00F42D3/04
CPCE21C41/22E21F13/00F42D3/04
Inventor 陈庆发胡华瑞陈青林
Owner GUANGXI UNIV
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