复杂地质条件下巷道围岩失稳变形原因分析

以山西天地王坡煤业有限公司3209放顶煤工作面软岩临空巷道围岩失稳变形为背景，从围岩强度、地应力、岩体结构特征、地下水、岩层倾角、相邻工程、巷道形状、巷道跨度、施工工艺、施工质量等10个因素考虑，采用层次分析法对各影响因素进行综合分析，给出各影响因素权重值的总排序，为巷道围岩稳定性控制提供一定的理论依据。

Instability Deformation Reason of the Surrounding Rock of Roadway Under the Complex Geological Conditions

Taking the instability deformation of the surrounding rock of soft rock overhead roadway of 3209 caving working face of Shanxi tiandi wangpo coal mining Co.,Ltd as the study background,the factors of intensity of surrounding rock,in-situ stress,rock mass structural characteristics,groundwater,dip angle of rock strum,adjacent engineering,roadway shape,roadway span,construction techniques,construction quality are analyzed synthetically by adopting the analytic hierarchy process,the general ranking results of weights of the above ten factors are given to provide the theoretical basis for the controlling of the stability of surrounding rock of roadway.