Prospecting and short-hole shrinkage mining method of small inclined ore body

A shallow hole ore retention and mining method technology, applied in surface mining, underground mining, special mining, etc., can solve problems such as difficulty in grasping the boundary distribution of ore bodies, large amount of exploration and mining work, and large boundary changes, etc., to achieve reduction Effect of ore dilution rate, improvement of ore recovery rate, and reduction of engineering quantity

Active Publication Date: 2015-07-22
YUXI DAHONGSHAN MINING
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the generally thin ore body and large boundary changes of inclined small ore bodies, it is difficult to grasp the boundary distribution of ore bodies in the previous geological survey, and the recovery rate is low and the loss and dilution are large in direct mining
Although the combination of prospecting and mining can effectively improve the control of ore body, the separation of exploration and mining will lead to the defects of large exploration and mining engineering and high exploration and mining costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Prospecting and short-hole shrinkage mining method of small inclined ore body
  • Prospecting and short-hole shrinkage mining method of small inclined ore body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The Ⅱ1-4 and Ⅱ1-3 orebodies at an elevation of 560m~605m in the Dahongshan Iron Mine of Kunming Iron and Steel Group belong to the Hongshan Formation (Ptdh). The lithology of the first member of Hongshan Formation (Ptdh1) is light-colored sodic lava, and the uniaxial compressive strength of sodic lava is 59MPa~120MPa, which belongs to hard rock; the uniaxial compressive strength of iron ore is 36~ 102MPa, a semi-hard ore.

[0029] In the 560m segment, within the Ⅱ1-3 and Ⅱ1-4 ore bodies, excavate the prospecting roadway along the strike, and excavate the prospecting access road at an interval of 40m until the ore body is broken down. The proven ore bodies are produced in parallel strips, the hanging wall is Ⅱ1-4 ore body, the footwall is Ⅱ1-3 ore body, the average thickness of interlayered stones between the two ore bodies is 6.8m, and the trend is southeast-northwest. The inclination is 190°~210°, and the inclination is 60°~75°. The average thickness of Ⅱ1-4 ore body...

Embodiment 2

[0032] The Ⅱ1-8 and Ⅱ1-7 orebodies at the elevation of 480m~515m in the Dahongshan Iron Mine of Kunming Iron and Steel Co., Ltd. are all light-colored metasodic lavas, belonging to hard rocks; the uniaxial compressive strength of iron ore is 43~97MPa, belonging to semi hard ore.

[0033] In the 480m section, within the Ⅱ1-8 and Ⅱ1-7 ore bodies, excavate the prospecting roadways along the strike, and excavate the prospecting access roads at intervals of 50m until the ore bodies are broken down. The proven ore body is produced in strips, the hanging wall is Ⅱ1-8 ore body, and the footwall is Ⅱ1-7 ore body. There are interlayered stones with an average thickness of 4.5m between the two ore bodies, and the trend is east-west, with a dip of 180° ~205°, inclination 55°~75°. The average thickness of Ⅱ1-4 ore body is 7.5m, and the average thickness of Ⅱ1-3 ore body is 6.9m.

[0034] The prospecting connection road is used as the transportation roadway, and the main roadway for trans...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a prospecting and short-hole shrinkage mining method of a small inclined ore body. The method comprises the following steps of: A, prospecting: tunneling a prospect tunnel at preset standard height in an ore body along the trend direction of the ore body, and tunneling a prospect transition strip at certain interval till the ore body is ruptured; B accurate mining cutting: arranging a following-vein transportation main tunnel at the preset standard height in the following-vein direction of the ore body by taking the prospect tunnel or the prospect transition strip formed in the step A as a transportation tunnel or an underbreaking tunnel, wherein the transportation tunnel or an underbreaking rear stope room are communicated with the following-vein transportation main tunnel; and C, stoping: exploiting the ore body inside the stope room by adopting a short-hole shrinkage mining method. The prospecting and short-hole shrinkage mining method disclosed by the invention can effectively reduce the prospection and exploitation engineering quantity of the small incline ore body and enhance the control degree by exploiting the ore body inside the stope room by taking the prospect tunnel and the prospect transition strip as basis and adopting the short-hole shrinkage mining method, thereby enhancing the ore recovery rate and reducing the ore loss rate and the ore dilution rate; and the prospecting and short-hole shrinkage mining method disclosed by the invention enhances the utilization ratio and prospection and exploitation safety of mineral resources and reduces the mining cost.

Description

technical field [0001] The invention belongs to the technical field of mineral excavation, and in particular relates to an inclined small ore body prospecting-shallow hole ore retention mining method which effectively reduces the amount of mineral exploration and mining, improves the utilization rate of mineral resources and the safety of exploration and mining, and has low mining cost. Background technique [0002] In recent years, the mining of relatively large ore bodies in my country is coming to an end. Due to the small scale of small ore bodies, the degree of control and mining conditions are relatively poor, and the investment in mining engineering is relatively large. How to rationally and fully utilize mineral resources has become an urgent problem to be solved by mines. [0003] At present, the mining of small ore bodies is affected by mining equipment and technology, and the open-field mining method of roadway mining is mostly used. The so-called roadway mining me...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/22
Inventor 杨德源余正方徐万寿覃龙江张涛
Owner YUXI DAHONGSHAN MINING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap