Energy-absorbing anti-impact anchor rod

• Main Authors: LI JIANGONG, GUO XINGJIANG, WANG LI, REN DONG, QIN YUPENG, WANG YUE, WANG HUIWU, ZHAO PENGCHENG, XU BING, LI KAI
• Format: Patent
• Language: Chinese; English
• Published: 22.11.2022
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The utility model provides an energy-absorbing and impact-preventing anchor rod. The energy-absorbing and impact-preventing anchor rod comprises a rod body, a tray and a yielding device, the rod body is sleeved with the yielding device. A yielding protrusion is arranged on the rod body and matched with the yielding device in a one-way stopping mode, and when rock burst occurs, the rod body moves towards the interior of surrounding rock relative to the yielding device. The energy-absorbing anti-impact anchor rod has the characteristic of constant-resistance abdicating energy absorption when being subjected to impact load or large deformation of a roadway, is simple in structure and convenient to mount, and is mainly suitable for supporting the large-deformation roadway and the roadway with impact tendency. 本实用新型提供一种吸能防冲锚杆，吸能防冲锚杆包括杆体、托盘与让压装置；让压装置套设在杆体上；杆体上设置有让压凸起，让压凸起与让压装置单向挡止配合，在发生冲击地压时，杆体相对于所述让压装置发生朝向围岩内部的移动。该吸能防冲锚杆在受到冲击载荷或者巷道大变形时，具有恒阻让位吸能的特性，结构简单，安装方便，主要适用于大变形巷道及具有冲击倾向巷道的支护。