SEG | Study on Ultimate Slope Angle Optimization and Stability Analysis of Slopes in an Open-Pit Mine (2024)

Peng, C. (University of Science and Technology Beijing) | Guo, Q. S. (University of Science and Technology Beijing) | Zhang, Z. C. (University of Science and Technology Beijing) | Zhao, L. (University of Science and Technology Beijing) | Yan, Z. X. (University of Science and Technology Beijing)

OnePetro

ABSTRACT: With the increase of the slope height in open-pit mines, the contradiction between the mining safety and stripping quantity becomes progressively serious. According to the analysis and calculation, the original slope angle in Gaocun Iron mine is conservative. After engineering geological investigation and rock mechanical tests, three optimization schemes were proposed. FLAC numerical simulation software was used to analyze the slope stability by several indexes such as displacement and plastic zone. In addition, the safety factors were obtained according to the limit equilibrium method by Geo-slope software. Eventually, the final slope angle of the mine was determined. It showed that the optimized slope angle is improved by 3° compared with that of the former design on the whole, and the slope stability well meets the requirement of production. 1 INTRODUCTION There are a growing number of metal mines carrying on deep mining in our country, and the design of open pit slopes faces a dilemma in that situation: When the slope angle is too big, the steep slope will cause instability and failure, which is not conducive to the normal production of the mine; In contrast, the small angle will increase the stripped amount and the production costs significantly. To solve this problem, slope angle must be optimized on the premise of mining safety (Heok & Bray 1981, Duncan & Christopher 2005). Gaocun pit of Nanshan Mining Co., Ltd., is a large open pit mine, whose ore production has reached 7 million tons per year with the total mining and stripping of 18 million tons. After entering the second phase of open pit mining, the north-south length of the stope expands from 780 m to 1500 m, and the east-west width expends from 575 m to 820 m. The highest level of open pit mining is up to +90 m and the bottom elevation is down to-186m. Under the conditions of high and steep slope mining, with mining depth increases, the contradiction between security and economic production is gradually highlighted. Therefore, slope design must be optimized to ensure the production safety and increase economic efficiency.

, reservoir simulation, slope angle, (16more...)

OnePetro

ISRM

ISRM-YSS-2014-076

3rd ISRM Young Scholars Symposium on Rock Mechanics

November, 2014

OnePetro PDF

Add feedback

  • Country:
    • Asia>China (0.19)
  • Genre:
    • Research Report (0.34)
  • Geology:
    • Geology (1.00)
  • Industry:
    • Materials> (1.00)
  • SPE Disciplines:
    • >Information Management and Systems (0.51)
    • Reservoir Description and Dynamics
      • Reservoir Characterization (0.49)
      • Reservoir Simulation (0.37)
  • Technology:
    • Information Technology
      • Mathematics of Computing (0.37)
      • (0.35)

Duplicate Docs Excel Report

Title
None found

Similar DocsExcel Report&nbspmore

TitleSimilaritySource
Analysis of the Constitutive Model of Gaomiaozi Bentonite Based on the Experiments About Elastic-Plastic Mechanical Feature1.000OnePetro
Study on the Failure Omen of Cemented Filling Body-Features of the Response Ratio1.000OnePetro
Experimental Research on Damage Characterization of Porous Rock-Like Composite Material Under External Loadings1.000OnePetro
Research on the Variation Rules of Stress in Deep Exploitation of Hard Rock Metal Mines Based on Dynamic Mine Pressure Monitoring1.000OnePetro
Comprehensive Application of Digital Borehole Camera in the Geological Survey of Coral Reefs1.000OnePetro
GIS Method Based Risk Evaluation for Landslide Hazard in Mian County, Shaanxi Province1.000OnePetro
The Failure Law and Support Technique for Fully-Mechanized Top-Coal Caving Working Face in Extra-Thick Coal Seams in Deep Coal Mines1.000OnePetro
Stability Analysis and Reinforcement on Three-Dimensional Slope Based on Long-Term Strength of Rock Mass1.000OnePetro
Experiment Study on Bearing Capability of Bolt Arched Pallet1.000OnePetro
Derive Grouting Technology in Rock Micro Fissure1.000OnePetro
The Deformation Mechanism of Soft Coal Roadway Under Mining Activity Influence and Its Support Technology1.000OnePetro
Coal-Rock Mass Dynamic Fracturing Characteristics and Deep Critical Discrete Range in Fault Zones1.000OnePetro
Research on Open-Pit Mine Blasting Load Equivalent Way1.000OnePetro
Rock Burst Prediction for Deep-Buried Tunnels at Jinping II Hydropower Station Using Microseismic Monitoring1.000OnePetro
Numerical Simulation of Rock Burst Danger of Longwall Mining Face Located in the Footwall of Skew Fault1.000OnePetro
Technology for Reducing Boulder Yield of Blasting in Fracture Developed Rock of an Open-Pit Mine1.000OnePetro
Numerical Simulation of Surface Blasting in Influence of Stability of Underground Chambers1.000OnePetro
Characteristics of Stress Field of the Erdos Basin and Its Effects on the Deep Mining1.000OnePetro
Numerical Tests on Failure Process of Rock Slopes With a Weak Stratum1.000OnePetro
Impact of Supporting Pressure at Excavation Face on Surface Deformation in Xi'an Metro Shield Construction1.000OnePetro
Experimental Study on the Whole Process of Excavation Deformation and Failure Phenomena of Slope Rock Mass Under the Condition of High Pressure1.000OnePetro
The Analysis of Slope Stability and Optimized Slope Angle for the Open-Pit Mining of a Porphyry Copper Mine1.000OnePetro
Time Effect of Stress and Deformation for Surrounding Rocks in Deep-Buried Tunnels During Unloading1.000OnePetro
Deformation and Failure Characteristics of High and Steep Slope and the Impact of Underground Mining1.000OnePetro
The Analysis of Effects on Shear Strength Characteristics of Loess by Moisture Content Changes and Freeze-Thaw Circle1.000OnePetro
A Hydro-Mechanical Coupled Algorithm for Unsaturated Soil in FLAC3D1.000OnePetro
Study on Mechanical Property and Temperature Field of Frozen Wall in Cretaceous Strata1.000OnePetro
The Physical Model Experimental Study on the Construction of Bedded Salt Rock Energy Underground Storage1.000OnePetro
Anisotropic Numerical Analysis on Failure Modes of Dip Layered Rock Slopes and Engineering Application1.000OnePetro
The 3D Numerical Study on Growth and Coalescence of Pre-Existing Flaws in Rock-Like Materials Subjected to Compressive Loads1.000OnePetro
Tensile Stress Mobilization Along a Rock Bolt Under Shear Load1.000OnePetro
SEG | Study on Ultimate Slope Angle Optimization and Stability Analysis of Slopes in an Open-Pit Mine (2024)

References

Top Articles
Latest Posts
Recommended Articles
Article information

Author: Velia Krajcik

Last Updated:

Views: 6689

Rating: 4.3 / 5 (74 voted)

Reviews: 89% of readers found this page helpful

Author information

Name: Velia Krajcik

Birthday: 1996-07-27

Address: 520 Balistreri Mount, South Armand, OR 60528

Phone: +466880739437

Job: Future Retail Associate

Hobby: Polo, Scouting, Worldbuilding, Cosplaying, Photography, Rowing, Nordic skating

Introduction: My name is Velia Krajcik, I am a handsome, clean, lucky, gleaming, magnificent, proud, glorious person who loves writing and wants to share my knowledge and understanding with you.