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Research on Mechanism and Prevention Technology of Rib Spalling In Fully-Mechanized Coal Mining Face with Soft and Unstable Seam

Year: 2019

Type: conference-paper

Abstract: The present situation and influencing factors involved in rib-spalling at a fully-mechanized coal mining face with soft and unstable seam were analyzed. The stress characteristics and the mechanism of rib spalling were modeled. Several kinds of control principles and methods were proposed, after the comprehensive comparative analysis, the measure of coal wall injection Marithan powder was conducted, comprehensive prevention and treatment measures to optimize the parameters of fully mechanized mining face for aids had been adopted. Field test results show, after the implementation of comprehensive prevention and control measures of coal wall rib-spalling, the serious rib-spalling for the depth more than 0.7 m has been completely eliminated, and the range of rib-spalling reduced to 5% from 35% of the length of the working face. The occurrence probability of rib spalling were significantly reduced, and to ensure the normal mining of working face, economic and safety benefits were significantly improved.

Source: IOP Conference Series Earth and Environmental Science

DOI: 10.1088/1755-1315/252/5/052065

Authors: Wulin Lei, Xingliang Li, Wengang Du, Ji Zhang, Jufeng Zhang, Fei Shang, Tai Xu

Institutions: Xi'an University of Science and Technology, Longdong University, Shaanxi Railway Institute

Language: English

Topic: Geomechanics and Mining Engineering

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: Longdong University

OpenAlex ID: W2958398453

FWCI: 0.98

Cites: 1

Cited by: 6

Related to: 10