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A platform for research: civil engineering, architecture and urbanism
Large-deformation self-adaptive energy release anchor rod
The invention discloses a large-deformation self-adaptive energy release anchor rod. The anchor rod comprises a rod body (4) and an inner stepped pipe barrel (1) arranged on the rear section of the rod body (4) in a sleeving mode, and a abrasion-resistant magnesium alloy friction head (41) is arranged at the tail of the rod body (4); the inner stepped pipe barrel (1) is provided with at least twostages of stepped surfaces, and the inner stepped pipe barrel is sequentially divided into a small-diameter pipe barrel (11), at least one stage of medium-diameter pipe barrel (12) and a large-diameter pipe barrel (13) from front to back; and the outer diameter of the abrasion-resistant magnesium alloy friction head (41) is larger than the inner diameter of any one of the medium-diameter pipe barrels (12), the abrasion-resistant magnesium alloy friction head (41) is pre-arranged in the large-diameter pipe barrel (13) and initially positioned on the rear-stage stepped surface, and the rod body(4) is in transition fit or interference fit with the small-diameter pipe barrel (11). The anchor rod has the technical effects that the elongation rate is increased, energy generated by surrounding rock deformation is effectively released, the early-stage supporting capacity and breaking strength of the anchor rod are greatly improved, a good supporting effect is achieved, and surrounding rock isstabilized for a long time.
本发明公开了一种大变形自适应释能锚杆，它包括有杆体（4）和套在杆体（4）后段上的内阶梯管筒（1），杆体（4）尾部为耐磨损的镁合金摩擦头（41）；内阶梯管筒（1）具有至少两级台阶面，内阶梯管筒从前至后依次分为小径管筒（11）、至少一级中径管筒（12）和大径管筒（13）；耐磨损的镁合金摩擦头（41）外径大于任一中径管筒（12）内径，耐磨损的镁合金摩擦头（41）预置于大径管筒（13）内、初始定位于后级台阶面，杆体（4）与小径管筒（11）为过渡配合或过盈配合。本发明的技术效果是：增大了延伸率，有效地释放围岩变形产生的能量，且大幅提升了锚杆的前期支护能力和破坏强度，具有良好的支护作用，长时间稳定围岩。
Large-deformation self-adaptive energy release anchor rod
The invention discloses a large-deformation self-adaptive energy release anchor rod. The anchor rod comprises a rod body (4) and an inner stepped pipe barrel (1) arranged on the rear section of the rod body (4) in a sleeving mode, and a abrasion-resistant magnesium alloy friction head (41) is arranged at the tail of the rod body (4); the inner stepped pipe barrel (1) is provided with at least twostages of stepped surfaces, and the inner stepped pipe barrel is sequentially divided into a small-diameter pipe barrel (11), at least one stage of medium-diameter pipe barrel (12) and a large-diameter pipe barrel (13) from front to back; and the outer diameter of the abrasion-resistant magnesium alloy friction head (41) is larger than the inner diameter of any one of the medium-diameter pipe barrels (12), the abrasion-resistant magnesium alloy friction head (41) is pre-arranged in the large-diameter pipe barrel (13) and initially positioned on the rear-stage stepped surface, and the rod body(4) is in transition fit or interference fit with the small-diameter pipe barrel (11). The anchor rod has the technical effects that the elongation rate is increased, energy generated by surrounding rock deformation is effectively released, the early-stage supporting capacity and breaking strength of the anchor rod are greatly improved, a good supporting effect is achieved, and surrounding rock isstabilized for a long time.
本发明公开了一种大变形自适应释能锚杆，它包括有杆体（4）和套在杆体（4）后段上的内阶梯管筒（1），杆体（4）尾部为耐磨损的镁合金摩擦头（41）；内阶梯管筒（1）具有至少两级台阶面，内阶梯管筒从前至后依次分为小径管筒（11）、至少一级中径管筒（12）和大径管筒（13）；耐磨损的镁合金摩擦头（41）外径大于任一中径管筒（12）内径，耐磨损的镁合金摩擦头（41）预置于大径管筒（13）内、初始定位于后级台阶面，杆体（4）与小径管筒（11）为过渡配合或过盈配合。本发明的技术效果是：增大了延伸率，有效地释放围岩变形产生的能量，且大幅提升了锚杆的前期支护能力和破坏强度，具有良好的支护作用，长时间稳定围岩。
Large-deformation self-adaptive energy release anchor rod
一种大变形自适应释能锚杆
ZHOU XIAOPING (author) / ZHAO KANG (author) / FU LIANG (author) / LI ZHENG (author)
2021-01-29
Patent
Electronic Resource
Chinese
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