A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
软岩用涨壳锚杆及其施工方法
本发明公开了一种软岩用涨壳锚杆，包括涨壳、锚杆，所述涨壳两端分别设置有涨壳内楔、锥形顶块，涨壳内楔与涨壳顶部、锥形顶块与涨壳底部均构成滑动式接触；所述锚杆包括锚杆体，锚杆体一端通过连接套固定安装有螺杆，螺杆与涨壳内楔通过螺纹传动连接，连接套顶部嵌入锥形顶块内并紧压锥形顶块的支撑凸缘；转动锚杆驱动涨壳内楔和锥形顶块向涨壳内运动直至锥形顶块的支撑凸缘断裂，使得涨壳片向外变形扩胀至围岩孔壁对岩体施加预应力；同时还提供了该软岩用涨壳锚杆的施工方法。本发明成本低，锚固效果好，施工效率高，能很好地应用于软质岩层。
The invention discloses an expansion shell anchor rod for soft rock. The expansion shell anchor rod comprises an expansion shell and an anchor rod. Two ends of the expansion shell are respectively provided with an expansion shell inner wedge and a conical ejection block. The expansion shell inner wedge and an expansion shell top portion, and the conical ejection block and an expansion shell bottompotion form a sliding contact respectively. The anchor rod comprises an anchor rod body, and one end of the anchor rod body is fixedly installed with a screw rod through a connecting sleeve. The screw rod and the expansion shell inner wedge are in transmission connection by threads. The top of the connecting sleeve is embedded in the conical ejection block and presses a support flange of the conical ejection block. The anchor rod is rotated to drive the expansion shell inner wedge and the conical ejection block to move into the expansion shell until the support flange of the conical ejectionblock is broken, so that an expansion shell piece is deformed and expanded to the surrounding rock hole wall to prestress the rock mass; meanwhile, the invention also provides a construction method ofthe expansion shell anchor rod for the soft rock. The expansion shell anchor rod for the soft rock and the construction method thereof have low cost, good anchoring effect, high construction efficiency, and can be well applied to soft rock formations.
软岩用涨壳锚杆及其施工方法
本发明公开了一种软岩用涨壳锚杆，包括涨壳、锚杆，所述涨壳两端分别设置有涨壳内楔、锥形顶块，涨壳内楔与涨壳顶部、锥形顶块与涨壳底部均构成滑动式接触；所述锚杆包括锚杆体，锚杆体一端通过连接套固定安装有螺杆，螺杆与涨壳内楔通过螺纹传动连接，连接套顶部嵌入锥形顶块内并紧压锥形顶块的支撑凸缘；转动锚杆驱动涨壳内楔和锥形顶块向涨壳内运动直至锥形顶块的支撑凸缘断裂，使得涨壳片向外变形扩胀至围岩孔壁对岩体施加预应力；同时还提供了该软岩用涨壳锚杆的施工方法。本发明成本低，锚固效果好，施工效率高，能很好地应用于软质岩层。
The invention discloses an expansion shell anchor rod for soft rock. The expansion shell anchor rod comprises an expansion shell and an anchor rod. Two ends of the expansion shell are respectively provided with an expansion shell inner wedge and a conical ejection block. The expansion shell inner wedge and an expansion shell top portion, and the conical ejection block and an expansion shell bottompotion form a sliding contact respectively. The anchor rod comprises an anchor rod body, and one end of the anchor rod body is fixedly installed with a screw rod through a connecting sleeve. The screw rod and the expansion shell inner wedge are in transmission connection by threads. The top of the connecting sleeve is embedded in the conical ejection block and presses a support flange of the conical ejection block. The anchor rod is rotated to drive the expansion shell inner wedge and the conical ejection block to move into the expansion shell until the support flange of the conical ejectionblock is broken, so that an expansion shell piece is deformed and expanded to the surrounding rock hole wall to prestress the rock mass; meanwhile, the invention also provides a construction method ofthe expansion shell anchor rod for the soft rock. The expansion shell anchor rod for the soft rock and the construction method thereof have low cost, good anchoring effect, high construction efficiency, and can be well applied to soft rock formations.