Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High abrupt slope tunnel sleeve arch hole entering sequence connection construction method
The invention relates to a high-abrupt-slope tunnel sleeve arch hole entering sequence connection construction method. The problem that a high-abrupt-slope tunnel is difficult to enter a hole is effectively solved. According to the technical scheme, the method comprises the steps that a temporary platform is built, specifically, dangerous rocks and unstable rock masses on a hillside are pried, excavated and removed, excavation is conducted to the upper middle portion of a cover arch of a hole, and excavated soil and rocks are buried to the front side of the hole to serve as the temporary platform; constructing a double-lug foundation of the guide wall: pouring auxiliary foundation struts on the middle upper part of the cover arch and on the outer sides of the left side and the right side by using concrete; according to the method, primary pouring of the cover arch body is completed firstly, then downward excavation is conducted on one side of the lower step, supporting protection is conducted on the primary pouring cover arch body on the upper side in the mode that middle core soil is reserved, secondary pouring of the cover arch body is completed on the excavated side, and finally secondary pouring of the cover arch body is completed on the other side. In this way, the problem that hole entering is difficult due to hole surrounding rock disturbance and operation space limitation can be effectively solved.
本发明涉及一种高陡坡隧道套拱进洞接序施工方法，有效解决了高陡坡隧道进洞困难的问题；其解决的技术方案是，包括修筑临时平台：先将山坡上危石及不稳定岩体撬挖排除，先开挖至洞口套拱中上部，并使挖掘的土石填埋至洞口前侧作为临时平台；施作导向墙“双耳”基础：在套拱中上部且位于左右两侧的外侧用混凝土浇筑辅助基础支柱；本发明通过先完成初次浇筑套拱主体，后经过下台阶其中一侧进行向下挖掘，且预留中部核心土的方式再对上侧的初次浇筑套拱主体进行支撑防护，并对挖掘后的一侧完成二次浇筑套拱主体，最后将另一侧完成二次浇筑套拱主体，通过该种方式能够有效解决洞口围岩扰动及作业空间限制导致难以进洞的问题。
High abrupt slope tunnel sleeve arch hole entering sequence connection construction method
The invention relates to a high-abrupt-slope tunnel sleeve arch hole entering sequence connection construction method. The problem that a high-abrupt-slope tunnel is difficult to enter a hole is effectively solved. According to the technical scheme, the method comprises the steps that a temporary platform is built, specifically, dangerous rocks and unstable rock masses on a hillside are pried, excavated and removed, excavation is conducted to the upper middle portion of a cover arch of a hole, and excavated soil and rocks are buried to the front side of the hole to serve as the temporary platform; constructing a double-lug foundation of the guide wall: pouring auxiliary foundation struts on the middle upper part of the cover arch and on the outer sides of the left side and the right side by using concrete; according to the method, primary pouring of the cover arch body is completed firstly, then downward excavation is conducted on one side of the lower step, supporting protection is conducted on the primary pouring cover arch body on the upper side in the mode that middle core soil is reserved, secondary pouring of the cover arch body is completed on the excavated side, and finally secondary pouring of the cover arch body is completed on the other side. In this way, the problem that hole entering is difficult due to hole surrounding rock disturbance and operation space limitation can be effectively solved.
本发明涉及一种高陡坡隧道套拱进洞接序施工方法，有效解决了高陡坡隧道进洞困难的问题；其解决的技术方案是，包括修筑临时平台：先将山坡上危石及不稳定岩体撬挖排除，先开挖至洞口套拱中上部，并使挖掘的土石填埋至洞口前侧作为临时平台；施作导向墙“双耳”基础：在套拱中上部且位于左右两侧的外侧用混凝土浇筑辅助基础支柱；本发明通过先完成初次浇筑套拱主体，后经过下台阶其中一侧进行向下挖掘，且预留中部核心土的方式再对上侧的初次浇筑套拱主体进行支撑防护，并对挖掘后的一侧完成二次浇筑套拱主体，最后将另一侧完成二次浇筑套拱主体，通过该种方式能够有效解决洞口围岩扰动及作业空间限制导致难以进洞的问题。
High abrupt slope tunnel sleeve arch hole entering sequence connection construction method
一种高陡坡隧道套拱进洞接序施工方法
WANG XIANDONG (Autor:in) / ZHONG QIDONG (Autor:in) / LI JIANG (Autor:in) / JING YUTING (Autor:in) / CHEN XIAOYANG (Autor:in) / ZHANG HAO (Autor:in) / YIN HEJUN (Autor:in) / ZHENG HONGWEI (Autor:in) / LIU CHUANGCHUANG (Autor:in) / ZHANG XIAOCHUAN (Autor:in)
11.06.2024
Patent
Elektronische Ressource
Chinesisch
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