一种可回收多段自适应膨胀锚杆

本发明公开了一种可回收多段自适应膨胀锚杆，属于边坡加固技术领域，包括锚杆壳，锚杆壳内部设置为空心结构，锚杆壳内注入混凝土，锚杆壳设置在土体的钻孔内，锚杆壳包括若干段内螺纹段和若干段膨胀段，两段内螺纹段之间设置有一段膨胀段，锚杆壳的两端均设置内螺纹段。本发明扭紧张拉螺杆后持续加力，锚杆膨胀段膨胀，膨胀过程会自适应贴合周围岩体，贴合度好，握裹力强，膨胀贴合度好，向内注浆后，相对于摩擦式、扩大式锚杆，抗拔力更强，针对城市区域需要回收锚杆的情况，锚杆可回收，避免突破地下红线，可以检测安装时的内部受理情况和回收时是否变直，具有回收效率高，实时检测内部的受力情况，出现损坏技术更换，避免事故发生。 The invention discloses a recoverable multi-section self-adaptive expansion anchor rod, and belongs to the technical field of slope reinforcement. The recoverable multi-section self-adaptive expansion anchor rod comprises an anchor rod shell, the interior of the anchor rod shell is of a hollow structure, concrete is injected into the anchor rod shell, the anchor rod shell is arranged in a drill hole of a soil body, the anchor rod shell comprises a plurality of internal thread sections and a plurality of expansion sections, one expansion section is arranged between two internal thread sections, and internal thread sections are arranged at the two ends of the anchor rod shell. According to the recoverable multi-section s