Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for improving recovery rate of point-column type upward horizontal layered filling mining method

A filling mining method and recovery rate technology, which is applied in ground mining, mining equipment, underground mining, etc., can solve the problems of mixing large waste rocks, roof edge cracking, waste, etc., achieve full recovery, increase recovery rate, and save costs and the effect of time

Active Publication Date: 2021-02-05
YUXI DAHONGSHAN MINING
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]The mining of each layer in the stope of the upward layered filling method belongs to the shallow hole retention method, and the personnel are exposed to the goaf for a long time. , complex joints, etc. lead to problems such as the collapse of the mining roadway, the cracking of the roof side, and the exposure of large faults. It is necessary to open another opening through the waste rock area to detour before entering the mining area (such as Figure 1), which increases the recovery cycle time and engineering workload, and is easy to mix a lot of waste rock And it is difficult to control, and the construction detour project needs at least 30m or more, and the cost is more than 130,000; some stopes without detour construction conditions can only be abandoned (such as Figure 2), ore abandonment is also a waste of non-renewable resources, while stope abandonment without detour construction conditions Usually up to 1000-3000 tons

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
  • Method for improving recovery rate of point-column type upward horizontal layered filling mining method
  • Method for improving recovery rate of point-column type upward horizontal layered filling mining method
  • Method for improving recovery rate of point-column type upward horizontal layered filling mining method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The preparation method of the steel mesh 4 is as follows: set up a group of three-core arch steel structure molds 3 every 1.5m in the roadway, and the steel mesh 4 and the surrounding rock are anchored with 1.2-1.8m*Ф20 steel mortar bolts, Five on the top, two on each side of the side wall, three on the inner wall, and the row spacing is 1.5m. The anchor rods and the steel mesh are fixed together. catch.

[0032] The weight ratio of the concrete is cement: water: medium coarse sand: gravel=1:0.55:1.84:3.16.

[0033] The cement is 32.5R ordinary Portland cement, the particle size of the stones is 40mm-100mm, and the proportion of the stones in the whole pouring body is less than 15%.

[0034] In the step 4, the erection method of the formwork is as follows: Use a length×width (1.5m×0.3m) steel formwork to erect the formwork on the wall and top of the entire roadway, and tightly bond each other to form a closed roadway frame.

[0035] In the step 4, the concrete pouring...

Embodiment 1

[0041]Before construction, use a prying trolley or manually clean the roof and side pumice in the closed broken section, that is, C area, and clean the wall foundation to the bedrock. If the local roadway specifications do not meet the design requirements, it is necessary to use a pick or blast to deal with it. Design dimensions, and strictly follow the technical specifications for construction. Before the construction of reinforced concrete, depending on the surrounding rock conditions on site, the roadway will be temporarily supported by means of pipe-slot bolts, plain spraying, and wooden braces to ensure the safety of the working environment. After cleaning the foundation of the walls on both sides to the hard bottom, construct the rooting anchor 1 and the hanging pile anchor 2. Both the rooting anchor 1 and the hanging pile anchor 2 are 1.2m*￠20mm reinforced mortar anchors with a distance of 1.2m. Exposed 0.4m. On the surface, according to the standard design of the sect...

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for improving the recovery rate of a point column type upward horizontal layered filling mining method. According to the method, a full-section reinforced concrete supporting mode is adopted for supporting a recovery channel so as to release an original recovery area of abandoned mining. According to the method, an underground roadway engineering concrete pouring supporting mode is introduced into a recovery area with high collapse and roof fall risks due to ground pressure concentration in an upward horizontal layered filling mining area, the use safety of a recovery channel is ensured through supporting, a detour project is canceled, the cost and time for constructing the detour project are saved, the ore recovery rate in the mining area is increased, thephenomena of redundant detour project and abandoned mining in construction are avoided, and full recovery of ore is achieved.

Description

technical field [0001] The invention belongs to the technical field of support, and in particular relates to a method for improving the recovery rate of a point-pillar upward horizontal layered filling mining method. Background technique [0002] The mining of each layer in the stope of the upward layer filling method belongs to the shallow hole retention method, and the personnel are exposed to the goaf for a long time. Problems such as cracking and large fault exposure occurred, and another opening had to be made through the construction detour of the waste rock area before entering the mining area (such as figure 1 As shown), the mining cycle time and engineering quantity are increased, and a large amount of waste rocks are easily mixed in, which is difficult to control, and the construction detour project needs at least 30m and costs more than 130,000; some stopes without detour construction conditions can only be abandoned Mining (such as figure 2 As shown), ore aba...

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
IPC IPC(8): E21C41/22E21D11/10E21D20/00E21D11/15
CPCE21C41/22E21D11/10E21D20/00E21D11/152
Inventor 赵灵君胡远董越权徐万寿徐艳方程传钊王军刘晓军陈浩
Owner YUXI DAHONGSHAN MINING
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com