Analysis of Mining Subsidence Disasters in Loess Gully Areas and its Control Countermeasures

Abstract:

In light of the special topography in loess gully areas, the mining subsidence disasters in which are classified into three types. The evolution process and formation mechanism of each subsidence type are analyzed, and puts forward corresponding control countermeasures. The collapse disaster is considered to be caused mostly when tensile stress in rock or soil exceed their tensile strength, while the landslide disaster is mainly initiated when shear stress exceed the shear strength. The slumping disaster, however, possess both the tensile failure and the shear failure mechanism. Methods of reducing damages such as coordinated and height-limit mining, designing protective coal pillar, backfill mining and mining down the slope can be adopted to prevent mining subsidence disasters in gully influence scope. Control measures such as slope cutting, crack grouting, collapse backfilling, support and reinforcement, planting vegetation are meanwhile needed. Measures for the restoration and emergency management must be taken after the disaster.

• Periodical: Applied Mechanics and Materials (Volume 737)
• Pages: 456-460
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.737.456
• Online since: March 2015
• Authors: Wen Bin Guo*, Xue Yi Yu, Zhang Rong Liu
• Keywords: Collapse, Control Countermeasures, Landslide, Loess Gully Areas, Slumping, Subsidence Disasters

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