Self-drilling and self-anchoring retractable anchor rod for soil layer and sand layer, and anchoring method of self-drilling and self-anchoring retractable anchor rod

The invention discloses a self-drilling and self-anchoring retractable anchor rod for a soil layer and a sand layer, and an anchoring method of the self-drilling and self-anchoring retractable anchorrod. The self-drilling and self-anchoring retractable anchor rod comprises an anchor rod body used for supporting, and an attaching part used for driving the anchor rod to be screwed into and screwedout of a supporting base body and used for being connected with the supporting base body in an embedded mode is arranged on the anchor rod body. The attaching part is screwed into and screwed out of the supporting base body and connected with the supporting base body in the embedded mode, an anchor rod hole is not formed firstly any more, thus the anchor rod mounting time is shortened, and the supporting efficiency is improved. 一种用于土、砂层的自钻自锚可回收锚杆及其锚固方法，包含有用于支护的锚杆本体，在锚杆本体上设置有用于带动锚杆在支护基体中旋入和旋出并且与支护基体呈嵌入式联接的贴附部，通过贴附部，实现了与支护基体中旋入和旋出，实现了与支护基体呈嵌入式联接，不再先形成锚杆孔，因此缩短了锚杆安装时间，提高了支护的效率。