A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Prestress full-length anchoring mortar anchor rod for underground cave depot and rapid anchoring tensioning method
The invention discloses a prestress full-length anchoring mortar anchor rod for an underground cave depot. The anchor rod is characterized in that resin cartridges are located at the bottom of a drillhole and used for anchoring the end of a full-length anchor rod body to serve as an anchoring section after being smashed, the tail end of the full-length anchor rod body is arranged at an opening ofthe drill hole through an anchor backing plate and used for prestress tensioning, a grouting pipe and an exhaust pipe are inserted into the anchor backing plate, the grouting pipe is used for grouting and anchoring of a free section, the exhaust pipe is used for grouting and exhausting of the free section, and the exhaust pipe is placed along the full-length anchor rod body and extends to the junction of the anchoring section and the free section. Meanwhile, the invention further provides a rapid anchoring method of the prestress full-length anchoring mortar anchor rod for the underground cave depot. According to the anchor rod and the method, the characteristics that an end anchoring anchor rod exerts prestress to actively reinforce surrounding rock and is large in stress diffusion rangeare achieved, the advantages that a full-length anchoring anchor rod is high in supporting rigidity and sensitive to surrounding rock deformation and bed separation are achieved, and the roadway surrounding rock deformation can be prevented in time; and the installation process is simple, the consumed time is short, and a guarantee is provided for rapid tunneling of a cavern or a roadway.
本发明公开了一种地下洞库用预应力全长锚固砂浆锚杆，树脂药卷位于钻孔底部并被捣破后用于全长锚杆杆体的端部锚固以作为锚固段，全长锚杆杆体的尾端通过锚垫板安装在钻孔口部用于预应力张拉，锚垫板上插装有注浆管和排气管，注浆管用于自由段注浆锚固，排气管用于自由段注浆排气，排气管沿全长锚杆杆体放置，并伸至锚固段与自由段的交界位置处。同时，本发明还提供了一种地下洞库用预应力全长锚固砂浆锚杆的快速锚固方法。既具有端部锚固锚杆施加预应力主动加固围岩、应力扩散范围大的特点，又具有全长锚固锚杆支护刚度高、对围岩变形和离层敏感的优点，能够及时防止巷道围岩的变形；安装工序简单，耗时短，为洞室或巷道的快速掘进提供了保障。
Prestress full-length anchoring mortar anchor rod for underground cave depot and rapid anchoring tensioning method
The invention discloses a prestress full-length anchoring mortar anchor rod for an underground cave depot. The anchor rod is characterized in that resin cartridges are located at the bottom of a drillhole and used for anchoring the end of a full-length anchor rod body to serve as an anchoring section after being smashed, the tail end of the full-length anchor rod body is arranged at an opening ofthe drill hole through an anchor backing plate and used for prestress tensioning, a grouting pipe and an exhaust pipe are inserted into the anchor backing plate, the grouting pipe is used for grouting and anchoring of a free section, the exhaust pipe is used for grouting and exhausting of the free section, and the exhaust pipe is placed along the full-length anchor rod body and extends to the junction of the anchoring section and the free section. Meanwhile, the invention further provides a rapid anchoring method of the prestress full-length anchoring mortar anchor rod for the underground cave depot. According to the anchor rod and the method, the characteristics that an end anchoring anchor rod exerts prestress to actively reinforce surrounding rock and is large in stress diffusion rangeare achieved, the advantages that a full-length anchoring anchor rod is high in supporting rigidity and sensitive to surrounding rock deformation and bed separation are achieved, and the roadway surrounding rock deformation can be prevented in time; and the installation process is simple, the consumed time is short, and a guarantee is provided for rapid tunneling of a cavern or a roadway.
本发明公开了一种地下洞库用预应力全长锚固砂浆锚杆，树脂药卷位于钻孔底部并被捣破后用于全长锚杆杆体的端部锚固以作为锚固段，全长锚杆杆体的尾端通过锚垫板安装在钻孔口部用于预应力张拉，锚垫板上插装有注浆管和排气管，注浆管用于自由段注浆锚固，排气管用于自由段注浆排气，排气管沿全长锚杆杆体放置，并伸至锚固段与自由段的交界位置处。同时，本发明还提供了一种地下洞库用预应力全长锚固砂浆锚杆的快速锚固方法。既具有端部锚固锚杆施加预应力主动加固围岩、应力扩散范围大的特点，又具有全长锚固锚杆支护刚度高、对围岩变形和离层敏感的优点，能够及时防止巷道围岩的变形；安装工序简单，耗时短，为洞室或巷道的快速掘进提供了保障。
Prestress full-length anchoring mortar anchor rod for underground cave depot and rapid anchoring tensioning method
地下洞库用预应力全长锚固砂浆锚杆及快速锚固张拉方法
HONG KAIRONG (author) / GAO BO (author) / WEI HUA (author) / ZHAI XUEDONG (author) / ZHANG JIANHAN (author) / LI YUEHAN (author) / AN BO (author) / ZHANG ZHIHE (author) / XU PEI (author) / ZANG MINRUI (author)
2020-12-18
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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