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Method for preventing and controlling instability of high and steep bedding slope of expressway
The invention discloses a method for preventing and controlling instability of a high and steep bedding side slope of an expressway. The method comprises the following steps of: measuring and setting out the design slope ratio of the side slope; erecting a double-row scaffold; cleaning the slope surface and the slope bottom of the side slope; measuring the hole position of the anchoring hole; a fixed drilling machine is installed, a large-diameter drill bit is used for drilling, after a first preset depth is reached, a small-diameter drill bit is used for drilling to a second preset depth, and the first preset depth reaches the slope stable bed rock; scum and dust inside and outside the holes are removed; one end of an anchor cable is put into the small hole with the second preset depth, a hollow anchor rod is put into the large hole with the first preset depth, grouting is conducted, and the anchor cable penetrates through the hollow anchor rod; an anchoring pier reinforcement cage and a frame beam reinforcement cage are placed; an anchoring pier and a frame beam are poured, and then prestress tensioning anchoring is conducted on the anchor cable; grass seeds are sown between the frame beams, and the frame beams are maintained. The problem that an existing anchor cable serving as a single anchoring part has no anchoring effect after failure is solved.
本发明公开了一种高速公路高陡顺层边坡失稳防控方法，其包括：对边坡设计坡率进行测量放样；搭设双排脚手架；清理边坡坡面和坡底；锚固孔孔位放测；安装固定钻机，先用大直径钻头钻孔，达到第一预设深度后，再换用小直径钻头钻进至第二预设深度，第一预设深度达到边坡稳定基岩中；清除孔内和孔外浮渣、粉尘；将锚索一端放入第二预设深度的小孔中，向第一预设深度的大孔中放入空心锚杆，灌浆，锚索从空心锚杆中穿过；放置锚固墩钢筋笼和框架梁钢筋笼；浇筑锚固墩和框架梁，然后对锚索进行预应力张拉锚固；在框架梁间播撒草种，并养护框架梁。本发明解决了现有的以锚索作为单一锚固件失效后无锚固作用的问题。
Method for preventing and controlling instability of high and steep bedding slope of expressway
The invention discloses a method for preventing and controlling instability of a high and steep bedding side slope of an expressway. The method comprises the following steps of: measuring and setting out the design slope ratio of the side slope; erecting a double-row scaffold; cleaning the slope surface and the slope bottom of the side slope; measuring the hole position of the anchoring hole; a fixed drilling machine is installed, a large-diameter drill bit is used for drilling, after a first preset depth is reached, a small-diameter drill bit is used for drilling to a second preset depth, and the first preset depth reaches the slope stable bed rock; scum and dust inside and outside the holes are removed; one end of an anchor cable is put into the small hole with the second preset depth, a hollow anchor rod is put into the large hole with the first preset depth, grouting is conducted, and the anchor cable penetrates through the hollow anchor rod; an anchoring pier reinforcement cage and a frame beam reinforcement cage are placed; an anchoring pier and a frame beam are poured, and then prestress tensioning anchoring is conducted on the anchor cable; grass seeds are sown between the frame beams, and the frame beams are maintained. The problem that an existing anchor cable serving as a single anchoring part has no anchoring effect after failure is solved.
本发明公开了一种高速公路高陡顺层边坡失稳防控方法，其包括：对边坡设计坡率进行测量放样；搭设双排脚手架；清理边坡坡面和坡底；锚固孔孔位放测；安装固定钻机，先用大直径钻头钻孔，达到第一预设深度后，再换用小直径钻头钻进至第二预设深度，第一预设深度达到边坡稳定基岩中；清除孔内和孔外浮渣、粉尘；将锚索一端放入第二预设深度的小孔中，向第一预设深度的大孔中放入空心锚杆，灌浆，锚索从空心锚杆中穿过；放置锚固墩钢筋笼和框架梁钢筋笼；浇筑锚固墩和框架梁，然后对锚索进行预应力张拉锚固；在框架梁间播撒草种，并养护框架梁。本发明解决了现有的以锚索作为单一锚固件失效后无锚固作用的问题。
Method for preventing and controlling instability of high and steep bedding slope of expressway
高速公路高陡顺层边坡失稳防控方法
ZHANG HONGGUANG (author) / GAO JIALIANG (author) / YANG JUN (author) / SUN CHAOQUN (author) / WANG XUEYANG (author)
2023-03-31
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Stability Analysis of Steep Bedding Rock Slope with Strength Reduction Method
| Trans Tech Publications | 2014
Stability Analysis of Steep Bedding Rock Slope with Strength Reduction Method
| British Library Conference Proceedings | 2014
Construction method of bedding slope steep dip excavation and anchor strengthening structure
| European Patent Office | 2020