Distribution of Underground Pressure Law and Fracture Zone Prediction Research of Overburden in Steep and Multiple Coal Seams Mining

Ke Min Wei; Mao Sen Zhao; Ze Kang Wen; You Ling Fang

doi:10.4028/www.scientific.net/AMM.448-453.3888

Paper Titles

An Experimental Study on Destructive Nature of Seam Roof Strata with Horizontal Bedding
p.3869

Study on the Coefficient of Surface Subsidence by Mining on the Condition of Thick Unconsolidated Layers and Thin Stratum
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Study on the Response of Surrounding Rock for Gob-Side Entry Retaining under the Mining
p.3879

UDEC Numerical Simulation Research of Mining Overlying Strata Movement Regulation
p.3884

Distribution of Underground Pressure Law and Fracture Zone Prediction Research of Overburden in Steep and Multiple Coal Seams Mining
p.3888

Study on Numerical Simulation of Permeability Variation with Caving Mining Method
p.3893

Ventilation Optimization for Multi-Level Mining Based on Global Ventilation Network Simulation
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Development and Experimental Research on a Formula of Water Inrush Coefficient
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A Review on Coalbed Methane and Water Two Phase Flow Research
p.3908

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 448-453Distribution of Underground Pressure Law and...

Distribution of Underground Pressure Law and Fracture Zone Prediction Research of Overburden in Steep and Multiple Coal Seams Mining

Abstract:

Use Taiping coal mines second horizontal (+1100m~+900 m level ) 1#, 3# and 5# coal seam in Panzhihua Baoding as the research object, apply the problem solving nonlinear large deformation finite difference method (FLAC), to research the steep multi-seam mining of pressure distribution and characteristics of fracture zone. The results show that: (1)During the course of three coal mining extraction, the stress of goaf surrounding rocks will be changed. (2)When the nearby coal is mining, the coal pillar come into being stress concentration near the area. when the mining work continues, the goaf will have an effect on the protection pillar, which is similar to the "liberate". the effect of coal pillar and stress concentration nearby will be eased; (3)After the coal mining, plastic failure has occurred over the protection pillar, forming a water guide channel. Research results can be as a reference for similar steep seam mining.

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Periodical:

Applied Mechanics and Materials (Volumes 448-453)

Pages:

3888-3892

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.448-453.3888

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Online since:

October 2013

Authors:

Ke Min Wei*, Mao Sen Zhao, Ze Kang Wen, You Ling Fang

Keywords:

Fractured Zone, Mine Pressure, Mining Engineering, Numerical Simulation, Steep and Multiple Coal Seams

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* - Corresponding Author

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