层状岩体铰接拱结构的力学分析
nalysis on Jointed Arch of Layered Rocks
针对采场上覆岩层中的拱结构的失稳问题，对层状岩体铰接拱的形成、受力和稳定情况进行详细讨论，得到影响拱结构稳定的相关因素。分析得知：当岩体破断块度为0.2，在岩块回转 时，水平推力就可以达到竖向载荷的8~9倍；当岩体破断块度为0.5，在岩块回转 时，水平推力就只有竖向载荷的2倍左右。当块度小于 ，回转角度较小时，影响滑落失稳的关键是该结构上覆岩层的厚度 ，而随着回转角的增加岩块回转失稳可能性增大。该结果对采场工作面长度布置有一定参考价值。
o know the arch structure instability of roof strata，the formation，stress and stability of jointed arch of layered rocks are under discussion. The influence factors of arch structure stability are achieved. The result show：when rock mass lumpiness is 0.2 and slew，horizontal thrust is 8~9 times than vertical load；when rock mass lumpiness is 0.5 and slew，horizontal thrust is 2 times than vertical load. When rock mass lumpiness is less than and the angle of revolution is small，the key factor of sliding instability is thickness of overlying rock，however the increasing of angle of revolution will lead to instability of rock mass. The results have some reference value on working face length designing.
勾旭一、陈荣华
矿山压力、矿山支护矿山开采
采场覆岩铰接拱失稳状态岩体块度
mining overlying stratajointed archinstabilityrock mass lumpiness
勾旭一,陈荣华.层状岩体铰接拱结构的力学分析[EB/OL].(2011-05-24)[2025-08-23].http://www.paper.edu.cn/releasepaper/content/201105-558.点此复制
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