WO2022241972A1 - Procédé de récupération de minerai stocké lors de la transition d'un procédé de foudroyage à un procédé de remplissage - Google Patents

Procédé de récupération de minerai stocké lors de la transition d'un procédé de foudroyage à un procédé de remplissage Download PDF

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Publication number
WO2022241972A1
WO2022241972A1 PCT/CN2021/116006 CN2021116006W WO2022241972A1 WO 2022241972 A1 WO2022241972 A1 WO 2022241972A1 CN 2021116006 W CN2021116006 W CN 2021116006W WO 2022241972 A1 WO2022241972 A1 WO 2022241972A1
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WIPO (PCT)
Prior art keywords
ore
mining
panel
filling
recovery
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PCT/CN2021/116006
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English (en)
Chinese (zh)
Inventor
喻六平
王靖
张鹏
熊韶运
胡永泉
林敏�
Original Assignee
中钢集团马鞍山矿山研究总院股份有限公司
华唯金属矿产资源高效循环利用国家工程研究中心有限公司
中钢集团马鞍山矿院工程勘察设计有限公司
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Application filed by 中钢集团马鞍山矿山研究总院股份有限公司, 华唯金属矿产资源高效循环利用国家工程研究中心有限公司, 中钢集团马鞍山矿院工程勘察设计有限公司 filed Critical 中钢集团马鞍山矿山研究总院股份有限公司
Publication of WO2022241972A1 publication Critical patent/WO2022241972A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C41/00—Methods of underground or surface mining; Layouts therefor
    • E21C41/16—Methods of underground mining; Layouts therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings

Definitions

  • the invention belongs to the technical field of underground mine mining, and in particular relates to a method for recovering uncollapsed ore deposits on the ground surface during the mining process from the bottom-pillar subsection caving method to the filling method.
  • Cavern ore resources refer to the ore resources left in the stope after the mining stope is completed.
  • the main ore resources in the cavern for the caving method to filling method include triangular ore pillars and ore overburden.
  • the purpose of the present invention is to solve the technical problem in the prior art that it is impossible to safely and effectively recover the ore resources of the cavern, and to provide a cavern deposit in the process of converting the caving method to the filling method with good safety, simple construction technology and low engineering cost.
  • the recovery method of the mine can fully solve the problem of resource loss left by the caving method to the filling mining method, recover the upper left ore resources to the maximum extent, prolong the service life of the mine, and at the same time carry out safe treatment of the goaf, realizing the caving
  • the smooth transition to the filling method eliminates the safety hazards in the mining of ore deposits.
  • the goaf is divided into 3 panels, namely I panel, II panel and III panel.
  • the length of the panel is 40-60m.
  • Inter-panel pillars are set between the panels, and the width of the inter-panel columns is 8-15m; the original ore-exit approach is used as the ore-collecting trench for the recovery of ore deposits, and a new mine roadway is excavated at the footwall of the ore body.
  • the ore-collecting trench, the ore-loading approach, and the ore-exit alleyway are at the same level.
  • the ore-exiting roadway is arranged as a new ore-cutting ditch, and the original section-along-vein transportation lane is used as a new ore-exiting roadway.
  • step 1) Carry out circulation according to step 1) and step 2); if the ore body footwall still has deposits of ore resources, then add a new collection of ore cutting trenches, a new ore-out roadway, and segmental along-vein transportation lanes in the ore body footwall ;
  • the inter-panel recovery sequence of the Cunlong Mine is: recovery step by step along the ore body trend, mining one at a time, mining panel I first, then panel III, and finally panel II; Mining is carried out from the upper wall of the ore body to the lower wall of the ore body, and the vertical direction adopts bottom-up mining step by step, and multiple ore loading routes in the stope recover ore at the same time;
  • the ore-out joint roadway, the new ore-out joint roadway, the ore-collecting ditch, the new-set ore-cut ditch and the segmental transport roadway along the vein are all arranged at the footwall of the ore body.
  • a method for recovering the cave ore in the process of converting the caving method to the filling method of the present invention has the following positive effects:
  • Fig. 1 is the section view of the engineering layout of the original caving method
  • Fig. 2 is the sectional view of the layout of the ore recovery project in the storage hole of the present invention
  • Fig. 3 is a layout plan view of the ore recovery project of the present invention.
  • FIG. 2 the section drawing of the layout of the ore recovery project in the cavern and in conjunction with Fig. 2 and Fig. 1 can be seen that a kind of recovery method of the cavern mine in the process of changing the caving method to the filling method of the present invention, the original section along the vein The transportation lane 10, the stage along the vein transportation lane 12 and the original ore-exit approach road 4 all belong to the original project, and the original project should be reduced as much as possible during the mining design of the cavern mine.
  • the following processes are used to recover the cavern ore during the process of changing from the caving method to the filling method:
  • the goaf 8 is divided into three panels, namely, I panel 17, II panel 18, and III panel 19, and the length of the panels is 40 ⁇ 60m, the inter-panel column 13 is set between the adjacent panels, and the width of the inter-panel column 13 is 8-15m;
  • the original ore-exiting route 4 is used as the ore-collecting trench 1 for the recovery of ore storage, and the ore body footwall Newly excavated mining lane 3, arrange an ore loading approach 2 every 10-15m along the ore body in the mining lane 3, and the ore loading approach 2 obliquely intersects with the ore lane 3;
  • Lane 3 carries out mining to the deposit hole mine in the ore-collecting ditch 1;
  • the ore-exiting lane 3 is arranged as the new ore-cutting ditch 1', and the original section-along-vein transportation lane 10 is used as the new ore-exiting lane 3'.
  • the ore-out joint lane 3, the new mine-out joint lane 3', the ore-collecting ditch 1, the new-set ore-cut ditch 1' and the segmental along-vein transportation lane 11 are all arranged at the footwall of the ore body;
  • step 1) Carry out circulation according to step 1) and step 2); if there are still cave ore resources in the footwall of the ore body, then add a new ore cutting ditch 1', a new mining roadway 3' and subsections in the footwall of the ore body Along the vein transportation lane 11;
  • the inter-panel recovery sequence of the Cunlong Mine is: recovery step by step along the ore body trend, mining one at a time, first mining panel I panel 17, then mining III panel 19, and finally mining II panel 18; Mining is carried out from the upper wall of the ore body to the lower wall of the ore body, and the vertical direction adopts bottom-up mining step by step, and multiple ore loading routes 2 in the stope recover ore at the same time;
  • the ore in the ore-collecting trench 1 is recovered by using a scraper in the ore loading route 2; In 4, carry out fan-shaped medium-deep hole blasting recovery, and then use the ore loading approach 2 to carry out mining of the formed ore-collecting trench 1.
  • the layered filling body 9 can be used as an artificial false roof for deep mining after cementation, and can also be used as an ore covering layer 7 for upper ore mining, which can effectively suppress and avoid ground pressure and reduce the exposed area of the empty area; the filling body 9 After complete cementation, continue mining the upper part of the filling body 9 until the mining ends.
  • the vein-piercing roadway 5 is arranged in the panel interval column 13 and communicates with the segmental vein-alonging roadway 11; the ore body boundary line 14 is the industrial grade boundary line of the ore body;
  • the mining method is adopted; the middle section 15 of the filling mining method is located at the lower part of the middle section 16 of the caving method mining method, and the filling method is used for mining.
  • the present invention can recover the ore stored in the empty area, improve the recovery rate of the ore, effectively reduce the loss of ore resources, prolong the service life of the mine, reduce the cost per ton of ore, and increase the profit of the enterprise;
  • the setting of the isolation layer in the filling mining method can safely handle the goaf and eliminate the safety hazards of the goaf.
  • the present invention has been successfully applied to the recovery of ore deposits in a certain iron mine. According to statistics, the comprehensive recovery rate of ore resources recovered by using the present invention is 76%, and the average annual comprehensive recovery of ore is 300,000 tons.
  • the service life of the mine is 1 to 2 years, and the efficient recovery of ore resources stored in the tunnel from the non-pillar segmental caving method to the filling mining method has been realized, and the safety hazards in the goaf have been gradually eliminated.

Abstract

Procédé de récupération de minerai stocké lors de la transition d'un procédé de foudroyage à un procédé de remplissage. Lors de la transition d'un procédé d'exploitation minière par foudroyage à un procédé d'exploitation minière par remplissage, une route sortante de minerai (4), une route de transport de galerie d'avancement de minerai de sous-section d'origine (10), une route de transport de galerie d'avancement de minerai d'étage (12) et d'autres projets du procédé de foudroyage d'origine sont utilisés pour récupérer des ressources de minerai stockées dans une sous-section précédente. Des piliers inter-panneaux (13) sont agencés le long de la frappe d'un corps de minerai. L'exploitation minière est effectuée étape par étape à des intervalles de panneau, et est réalisée d'un panneau supérieur à un panneau inférieur dans les panneaux. La récupération est effectuée étape par étape de bas en haut dans la direction verticale, et la récupération est effectuée simultanément pour une pluralité de voies de chargement de minerai (2) dans un chantier d'extraction. Après que deux à trois couches sont récupérées dans un panneau, ces dernières sont immédiatement organisées et remplies sous la forme d'un faux toit artificiel pour une exploitation minière profonde et d'une couche de couverture de minerai (7) dans la partie supérieure d'une région vide. Une fois qu'un corps à remplir est complètement cimenté, la partie supérieure d'une couche est ensuite récupérée. Le procédé décrit permet de récupérer efficacement des ressources de minerai stockées lors de la transition du procédé de foudroyage au procédé de remplissage, d'améliorer la sécurité de la récupération de minerai stocké, d'éliminer des risques de sécurité dans une région d'exploitation minière, et de prolonger la durée de vie de la mine.
PCT/CN2021/116006 2021-05-18 2021-09-01 Procédé de récupération de minerai stocké lors de la transition d'un procédé de foudroyage à un procédé de remplissage WO2022241972A1 (fr)

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Application Number Priority Date Filing Date Title
CN202110538486.4A CN113216964B (zh) 2021-05-18 2021-05-18 一种崩落法转充填法过程中存窿矿的回收方法
CN202110538486.4 2021-05-18

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WO2022241972A1 true WO2022241972A1 (fr) 2022-11-24

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ZA (1) ZA202204720B (fr)

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CN113216964B (zh) * 2021-05-18 2022-05-27 中钢集团马鞍山矿山研究总院股份有限公司 一种崩落法转充填法过程中存窿矿的回收方法
CN114000882A (zh) * 2021-11-03 2022-02-01 金川集团股份有限公司 一种同一采区崩落法与充填法协同开采方法

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