Arabian Journal for Science and Engineering

, Volume 43, Issue 10, pp 5469–5485 | Cite as

Stability Evaluation Method for Gateways in Closely Spaced Coal Seams and Surrounding Rock Control Technology

  • Minglei Zhang
  • Yidong Zhang
Research Article - Civil Engineering


A stability evaluation model, with an assessment system comprising 14 main indexes, is established by applying fuzzy mathematics and euthenics. The indexes are roughly quantized by the fuzzy membership degree. Analytic hierarchy process is utilized to assign the weight of each index. The stability level of a gateway in a mine with closely spaced coal seams is calculated by comprehensive correlation analysis based on the euthenics theory. As an index representing the gateway stability, the stability level can indicate the effect the adjustment of the gateway parameters will have on gateway stability and point out the areas to be improved for optimal control of the surrounding rock. In a case study, the optimization technology was applied to gateways in the Xiandewang coalmine, China, whereby the stability of headgate no. 1720 and tailgates no. 1925 and no. 1727 was enhanced by applying the stability-level evaluation analysis. Through the engineering application developed here, utilizing indexes characterizing the improvement in gateway stability levels changes to the stress disturbance and adjustment of the construction factors can effectively improve the gateway support when the natural attributes are similar or unchanged.


Gateway stability Evaluation model Closely spaced coal seams Surround rock control technology 


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Copyright information

© King Fahd University of Petroleum & Minerals 2018

Authors and Affiliations

  1. 1.School of Mines, Key Laboratory of Deep Coal Resource MiningMinistry of Education of China, China University of Mining and TechnologyXuzhouChina
  2. 2.Key Laboratory of Deep Coal Resource MiningMinistry of Education, China University of Mining and TechnologyXuzhouChina

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