摘要
为了得到更准确的煤巷围岩稳定性评价指标权重,采用层次分析(AHP)和主成分分析(PCA)计算主、客观权重,再通过评价检验确定最优比例因子来计算组合权重。以58条样本巷道为研究对象,选取巷道顶板强度、煤层强度、巷道底板强度、直接顶高度和采高比值、巷道埋深、相邻煤柱宽度和直接顶初次垮落步距7个影响因素为评价指标,最终确定最优比例因子为0.6,得到指标权重依次为0.12、0.12、0.10、0.13、0.15、0.29和0.18。通过比较不同比例因子下评价结果与实测巷道围岩相对移近量的相关性发现:AHP和PCA相结合的主客观综合赋权法确定煤巷围岩稳定性评价指标权重的方法是可靠的,相对于单一的AHP或PCA确定权重更加准确。
In order to get more accurate evaluation index weights of stability of coal roadway surrounding rock, AHP and PCA are used to calculate subjective and objective weight, and then the optimal proportion factor is determined to calculate the combined weight by evaluation and test. Taking 58 samples of laneway as the research object, the paper selects 7 influencing factors as the roof strength of the roadway, the strength of coal seam, the strength of the roadway floor, the ratio of direct top height and mining height, the depth of the roadway, the width of the adjacent coal pillar and the first falling distance of the direct top fall, and finally determines the optimal ratio factor of 0.6, and the weights of the index are 0.12, 0.12, 0.10, 0.13, 0.15, 0.29 and 0.18.By comparing the correlation between the evaluation results of different proportions and the relative displacement of the surrounding rock, the subjective and objective comprehensive weighting method combining AHP and PCA to determine the weight of the stability evaluation index of coal roadway surrounding rock is reliable and more accurate than the single AHP or PCA to determine the weight.
作者
付强
FU Qiang(Shanxi Lingshi Huaying Fengjiatan Coal Co., Ltd.,Jinzhong 031300,China)
出处
《煤矿安全》
CAS
北大核心
2019年第3期199-202,207,共5页
Safety in Coal Mines
关键词
煤巷围岩
稳定性评价
指标权重
主客观综合赋权
层次分析
主成分分析
coal roadway surrounding rock
stability evaluation
index weight
subjective and objective comprehensive weight
analytical hierarchy process (AHP)
principal component analysis (PCA)
作者简介
付强(1990-),男,山西大同人,学士,2015年毕业于太原理工大学,主要从事采矿工程方面的现场实践及研究.
