A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Implementation method for simultaneously recovering upheaval deformation and horizontal deformation of tunnel
The invention discloses an implementation method for simultaneously recovering upheaval deformation and horizontal deformation of a tunnel. The implementation method comprises the steps that before a foundation pit is excavated, numerical simulation is conducted to obtain the position and size of a vertical grouting hole and the position and size of an oblique drill hole, located below an existing tunnel, of an unloading hole area; preparing a grouting device and a reamer bit; drilling holes; a grouting device is inserted into each vertical grouting hole; excavating a foundation pit on the inner side of the underground diaphragm wall, observing displacement monitoring equipment mounted on monitoring points on the inner wall of the existing tunnel and a track bed, if a certain ring segment generates displacement and deformation, grouting in a vertical grouting hole in a position corresponding to the ring segment, and grouting in a vertical grouting hole in a position corresponding to the ring segment; and meanwhile, a reamer bit is used for conducting reaming construction at the bottoms of the inclined drill holes in the positions corresponding to the annular pipe pieces, and when the horizontal displacement, the vertical displacement and the ovality of the tunnel are restored to set values, grouting and punching are stopped. By adopting the method, the displacement recovery rate of the vertical rigid body is close to 0.4.
本发明公开了一种同时恢复隧道隆起变形及水平变形的实施方法，包括步骤：在挖设基坑前进行数值模拟得到竖向注浆孔的位置和大小以及卸荷孔区域位于既有隧道下方的斜向钻孔的位置及大小；准备注浆装置和扩孔钻头；钻孔；在每个竖向注浆孔中插入注浆装置；在地连墙内侧开挖基坑，同时观察安装在既有隧道内壁及轨道道床上的监测点处的位移监测设备，若某一环管片产生位移和形变，则向与该环环管片对应位置处的竖向注浆孔内注浆，同时利用扩孔钻头在与该环环管片对应位置处的斜向钻孔底部进行扩孔施工，待隧道水平位移、竖向位移、椭圆度恢复到设定值时，停止注浆与打孔。采用本方法竖向刚体位移恢复率接近0.4。
Implementation method for simultaneously recovering upheaval deformation and horizontal deformation of tunnel
The invention discloses an implementation method for simultaneously recovering upheaval deformation and horizontal deformation of a tunnel. The implementation method comprises the steps that before a foundation pit is excavated, numerical simulation is conducted to obtain the position and size of a vertical grouting hole and the position and size of an oblique drill hole, located below an existing tunnel, of an unloading hole area; preparing a grouting device and a reamer bit; drilling holes; a grouting device is inserted into each vertical grouting hole; excavating a foundation pit on the inner side of the underground diaphragm wall, observing displacement monitoring equipment mounted on monitoring points on the inner wall of the existing tunnel and a track bed, if a certain ring segment generates displacement and deformation, grouting in a vertical grouting hole in a position corresponding to the ring segment, and grouting in a vertical grouting hole in a position corresponding to the ring segment; and meanwhile, a reamer bit is used for conducting reaming construction at the bottoms of the inclined drill holes in the positions corresponding to the annular pipe pieces, and when the horizontal displacement, the vertical displacement and the ovality of the tunnel are restored to set values, grouting and punching are stopped. By adopting the method, the displacement recovery rate of the vertical rigid body is close to 0.4.
本发明公开了一种同时恢复隧道隆起变形及水平变形的实施方法，包括步骤：在挖设基坑前进行数值模拟得到竖向注浆孔的位置和大小以及卸荷孔区域位于既有隧道下方的斜向钻孔的位置及大小；准备注浆装置和扩孔钻头；钻孔；在每个竖向注浆孔中插入注浆装置；在地连墙内侧开挖基坑，同时观察安装在既有隧道内壁及轨道道床上的监测点处的位移监测设备，若某一环管片产生位移和形变，则向与该环环管片对应位置处的竖向注浆孔内注浆，同时利用扩孔钻头在与该环环管片对应位置处的斜向钻孔底部进行扩孔施工，待隧道水平位移、竖向位移、椭圆度恢复到设定值时，停止注浆与打孔。采用本方法竖向刚体位移恢复率接近0.4。
Implementation method for simultaneously recovering upheaval deformation and horizontal deformation of tunnel
一种同时恢复隧道隆起变形及水平变形的实施方法
DU HUALIN (author) / XIA ZENGYIN (author) / LIU YING (author) / HAN SHENGZHANG (author) / ZHAO GANGLING (author) / JI YETAO (author) / WANG JUN (author) / HE ZHANJIANG (author) / MENG LINGBO (author) / GUO HUAJUN (author)
2023-04-18
Patent
Electronic Resource
Chinese
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