The Interaction Relationship between Support Setting Load and Surrounding Rock

Abstract:

The interaction relationship between support setting load and surrounding rock is the basis of support selection and surrounding rock control. The paper analyzes the interaction relationship between support setting load and surrounding rock by means of theory and experimental data. It is proved that setting load has an important influence on inhibiting immediate roof caving and enhancing immediate roof strength. The increment of setting load can prevent immediate roof falling. Setting load can affect the supporting body stiffness and distribution range of augmented resistance .The lower of the setting load, the larger of the roof deflection. The paper puts forward calculation method and influencing factors of coal wall stability ratio. According to the pressure date comparison of Tiebei mine two coal faces, setting load is one of important factors inducing roof large area weighting.

• Periodical: Advanced Materials Research (Volumes 962-965)
• Pages: 344-351
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.962-965.344
• Online since: June 2014
• Authors: Gang Xu*, Zhi Guo Liu
• Keywords: Roof Cutting, Strata Behavior, Support Setting Load, Surrounding Rock

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