Study on Strata Movement Control of Twice Strip Mining

Bingnan Hu

doi:10.4028/www.scientific.net/AMR.962-965.1085

Paper Titles

Numerical Simulation of Mining Overburden and Surface Deformation Law
p.1066

Research and Application of Mine Roadway Deformation Monitoring by Ultrasonic Technology
p.1070

Research on the Slope Sliding Mechanism of Excavation of Steeply Inclined Mine from Open-Pit to Underground
p.1075

Study of Coal and Rock Floor Failure Characteristics of Upper Protective Layer Mining
p.1079

Study on Strata Movement Control of Twice Strip Mining
p.1085

Testing Research on the Shape of the Bearing Push-Extend Reamed Affecting the Bearing Capability of the Pile of Push-Extend Multi-Under-Reamed Pile
p.1091

The Airflow Abnormal Value Analysis of Mine Ventilation Network Based on the Sensitivity
p.1095

The Orthogonal Test and Optimal Decision for the Development of New Backfill Cementing Materials Based on the Rod Milling Sand
p.1100

The Research on Evaluation Index System of Mine Thermal Environment
p.1106

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 962-965Study on Strata Movement Control of Twice Strip...

Study on Strata Movement Control of Twice Strip Mining

Abstract:

In order to further improve the recovery ratio in strip mining, this paper makes use of the law of insufficiency and sufficiency in strata movement and buildings’ additional stress release features, puts forward twice strip mining technology. The paper introduces the method and feasibility of twice strip mining. By analyzing karst cave collapse mechanism, the paper points out vertical cracks and horizontal layer separations are the direct causes of karst caves collapses and small strength mining each time can reduce karst cave collapse. The new technology has been applied in Pinghu Mine. It has totally extracted recoverable coal reserves under village buildings, effectively controlled strata deformation, and successfully avoided karst cave collapse within Yangkeng village.

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Periodical:

Advanced Materials Research (Volumes 962-965)

Pages:

1085-1090

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.962-965.1085

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Online since:

June 2014

Authors:

Bingnan Hu

Keywords:

Mechanism of Karst Cave Collapse, Small Deformation Criterion, Strata Movement Control, Twice Strip Mining

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References

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