Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Arrangement method of curtain grouting holes at axis turning position
The invention discloses a method for arranging curtain grouting holes at an axis turning, which comprises the following steps of: (1) calculating the horizontal projection lengths of two adjacent grouting holes on different axes on a plane according to the design value of a curtain grouting bottom line and the inclination angles of the grouting holes, and marking (2) selecting two points between the two adjacent grouting holes, (3) connecting the tail end marks of the horizontal projections of the two adjacent grouting holes in the step (1) by using an arc line, and dividing the arc line into three equal parts, and (4) upstream drilling is carried out in the drilling surface of the grouting reinforcing hole from the drilling position of the grouting reinforcing hole, the drilling angle is the same as that of the two adjacent grouting holes, and the drilling depth is the average value of the depths of the two adjacent grouting holes. The leakage of the grouting curtain at the turning position can be avoided, and leakage of the dam foundation is reduced.
本发明公开了一种帷幕灌浆孔在轴线转弯处的布置方法，包括①根据帷幕灌浆底线的设计值以及灌浆孔的倾斜角度，计算出两个处于不同轴线上的相邻灌浆孔在平面上的水平投影长度，并标记②在上述两相邻灌浆孔之间选定两点，作为灌浆加强孔的起钻位置，灌浆加强孔和所述相邻灌浆孔在平面上的连线为平滑曲线③用弧线连接步骤一中两相邻灌浆孔的水平投影末端标记，将该弧线进行三等分，灌浆加强孔起钻位置与对应三等分点的连线即为该灌浆加强孔钻进面的水平投影④由灌浆加强孔的起钻位置在其钻进面内向上游钻进，钻进角度与两相邻灌浆孔相同，钻进深度为两相邻灌浆孔深度的平均值。本发明能够避免灌浆帷幕在转弯处的漏洞，减少了坝基的渗漏。
Arrangement method of curtain grouting holes at axis turning position
The invention discloses a method for arranging curtain grouting holes at an axis turning, which comprises the following steps of: (1) calculating the horizontal projection lengths of two adjacent grouting holes on different axes on a plane according to the design value of a curtain grouting bottom line and the inclination angles of the grouting holes, and marking (2) selecting two points between the two adjacent grouting holes, (3) connecting the tail end marks of the horizontal projections of the two adjacent grouting holes in the step (1) by using an arc line, and dividing the arc line into three equal parts, and (4) upstream drilling is carried out in the drilling surface of the grouting reinforcing hole from the drilling position of the grouting reinforcing hole, the drilling angle is the same as that of the two adjacent grouting holes, and the drilling depth is the average value of the depths of the two adjacent grouting holes. The leakage of the grouting curtain at the turning position can be avoided, and leakage of the dam foundation is reduced.
本发明公开了一种帷幕灌浆孔在轴线转弯处的布置方法，包括①根据帷幕灌浆底线的设计值以及灌浆孔的倾斜角度，计算出两个处于不同轴线上的相邻灌浆孔在平面上的水平投影长度，并标记②在上述两相邻灌浆孔之间选定两点，作为灌浆加强孔的起钻位置，灌浆加强孔和所述相邻灌浆孔在平面上的连线为平滑曲线③用弧线连接步骤一中两相邻灌浆孔的水平投影末端标记，将该弧线进行三等分，灌浆加强孔起钻位置与对应三等分点的连线即为该灌浆加强孔钻进面的水平投影④由灌浆加强孔的起钻位置在其钻进面内向上游钻进，钻进角度与两相邻灌浆孔相同，钻进深度为两相邻灌浆孔深度的平均值。本发明能够避免灌浆帷幕在转弯处的漏洞，减少了坝基的渗漏。
Arrangement method of curtain grouting holes at axis turning position
帷幕灌浆孔在轴线转弯处的布置方法
XIE ZUNDANG (Autor:in) / YAO SHUAIQIANG (Autor:in)
18.07.2023
Patent
Elektronische Ressource
Chinesisch
Concrete dam curtain grouting arrangement structure and construction method thereof
| Europäisches Patentamt | 2024