摘要
为解决软岩斜井井筒稳定性评价问题,以红庆梁煤矿主斜井井筒软岩井筒现场实测项目数据为对象,将软岩斜井井筒工程安全风险因素划分为支护条件和环境条件两部分,其中支护条件的风险因素包括锚杆受力、锚索受力、喷层应变、顶底板变形、左邦变形和右帮变形;环境条件的风险因素为涌水量.以各项累计变形量和变化速率作为各因素的风险评估模型数据,结合实测数据,确定井筒稳定性安全评价指标.将井筒的安全等级划分为安全状态、较安全状态、危险状态和极危险状态四个等级.采用三级模糊综合评判法,建立软岩斜井井筒工程的安全评价模型,并结合现场监测数据,对井筒工程的安全状况进行定量评价.评价结果与实际情况一致,说明该方法可用于软岩斜井井筒的稳定性评价.
In order to solve the problem of stability of soft rock inclined shaft,the shaft safety risk factors of soft rock inclined shaft engineering are divided into supporting conditions and environmental conditions,based on the field test data of the soft shaft of the main inclined shaft of Hongqingliang coal mining.The risk factors of supporting conditions include the anchorage force of bolt,anchor stress,strain of shotcrete layer,roof and floor deformation,deformation of left-hand and right-hand;the risk factor of environmental conditions is water inflow.With the cumulative deformation and change rate as the risk assessment model data,combined with the measured data,the stability of the shaft stability evaluation index is determined.The safety level of the shaft is divided into four levels of safety state,safe condition,dangerous state and extremely dangerous state.The three grade fuzzy comprehensive evaluation method is used to establish the safety assessment model of soft rock inclined shaft engineering,and combining with the on-site monitoring data,the safety status of shaft engineering is quantitatively evaluated.The evaluation results are consistent with the actual situation,indicating that the method can be used for evaluation of the stability of the soft rock of inclined shaft.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2018年第3期476-481,共6页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金(51174268)
关键词
安全工程
斜井井筒
支护结构
模糊综合评判模型
涌水量
隶属函数
Safety engineering
shaft
supporting structure
fuzzy comprehensive evaluation model
yield
membership function
