煤矿巷道快速预应力锚体系的研究与应用

煤矿资源逐渐由浅部巷道向深部巷道发展,当前的锚杆支护已不能满足深部高地应力软岩巷道的支护要求。因此,提出了新型快速预应力锚杆支护体系,它包括了新型快速预应力锚杆和高凸T形钢带。分别论述了该体系各部分的设计思路和力学特性,应用FLAC3D软件对该体系进行了数值模拟分析,并进行了井下试验。数据表明,该体系可以有效控制深部巷道围岩变形,为今后此类型巷道支护设计提供了参考。

Study and application of fast-prestressed bolting system in colliery laneways

Since the coal mining expands gradually from shallow laneways to deep ones,the current bolting system has not satisfied the bolting requirements in deep soft-rocked laneways with high geological stress.Therefore,a new-type fast-prestressed bolting system was proposed,which included new-type fast-prestressed bolts and projected T-shaped steel strips.The design thinking and the mechanical properties of each part of the system were separately discussed,and the digital simulative analysis of the system was carr...