Using the ultrasonic wave detector to probe the flexible range of the extraction tunnel, grasping the rule of deformed tunnel directs the supporting design of the tunnel bolt.
利用超声波探测仪探测回采巷道的松动范围，掌握巷道的变形破坏规律，以此指导巷道的锚杆支护设计。
In this paper, effect of the dip Angle, stiffness and design depth of bolt on the horizontal displacement of tension anchor supporting structure was carried out by FLAC3D.
利用FLAC3D商业软件对基坑工程拉锚式支护结构的锚杆设计参数(锚杆长度、锚杆倾角、锚杆刚度以及锚杆设置深度)对支护结构水平位移的影响进行了数值模拟。
Ma Nianjie, Gao Qian. Reliability design of bolt supporting in coal drift. Project Identification Material of coal Science Fnd, 1997.
马念杰，高谦。煤巷锚杆支护可靠性设计。煤炭科学基金项目鉴定材料，1997。
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