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围岩稳定性评价是一个复杂的系统工程,主要是影响稳定性的指标多,信息不明确以及难以建立一套科学的评价方法等。根据大量调查研究,甄选了影响围岩稳定性的4个一级指标,17个二级指标,运用层次分析法(AHP)确定指标权重,同时,以灰色理论(Grey Theory)为基础,对指标进行赋值、量化,计算相互关联性,确定了围岩稳定性白色权函数的评价灰类,建立了多层次灰色理论围岩稳定性评价模型,有效地解决了小样本,信息不确切等问题。最后通过对围岩的实地监测,证明该评价模型科学、有效、真实可靠,为围岩稳定性评价和生产提供了参考价值和安全保障。
Surrounding rock stability assessment is a complex system engineering, mainly affecting the stability of the indicators, the information is not clear and it is difficult to establish a set of scientific evaluation methods. Based on a large number of investigations and studies, four first-level indicators and 17 second-level indicators that affect the stability of surrounding rock are selected. The analytic hierarchy process (AHP) is used to determine the index weights. Meanwhile, based on the Gray Theory, The evaluation gray value of the white weight function of surrounding rock stability was determined, and the stability evaluation model of surrounding rock of multi-level gray theory was established, which effectively solved the problems of small samples and inaccurate information. Finally, the on-the-spot monitoring of the surrounding rock proves that the evaluation model is scientific, effective, true and reliable, and provides a reference value and safety guarantee for the surrounding rock stability assessment and production.