Study on Movement Law of Overlying Strata during Shallow Thinner Seam Mining in Shendong Mining Area

Abstract:

Given the particularity and the first time for shallow thinner seam mining in Shendong mining area, the overlying strata movement law during shallow thinner coal seam mining has been studied in this paper based on the fully mechanized thinner coal face of NO.71301 in Shi Getai coal mine, resorting to observation on spot, numerical simulation and other methods. Through research, the important laws and features had been obtained, such as, initial pressure step, periodical pressure step, the obvious partition of periodical weighting, the unitary elasticity distribution of front abutment pressure, and the stress shell morphology over the mining rock, which provides important characteristic for roof control and foundation for the powered support selection.

• Periodical: Advanced Materials Research (Volumes 361-363)
• Pages: 188-192
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.361-363.188
• Online since: October 2011
• Authors: Xi Cheng Zhang, Zhong Cheng Qin, Qing Hai Li, Ning Zhang
• Keywords: Mining Pressure Observation, Numerical Simulation, Shallow Thinner Seam, Stress Shell

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