Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hole-entering construction method for unfavorable geological section of double-side approaching bias pressure tunnel
The invention discloses a hole entering construction method for an unfavorable geological section of a double-side approaching and unsymmetrical pressure tunnel, and relates to the technical field of hole entering of unsymmetrical pressure tunnels, the hole entering construction method for the unfavorable geological section of the double-side approaching and unsymmetrical pressure tunnel comprises the following steps: cleaning and protecting an upward slope of a hole opening, and perfecting water interception and drainage measures of the hole opening; excavating to an arch camber line position of a tunnel arch part, arranging a primary support steel arch frame, and arranging feet-lock anchor pipes at all positions of an arch foot; a small grouting guide pipe is arranged on the side, close to the mountain, of the arch crown, and grouting reinforcement is conducted through a grouting pump; pouring an arched concrete structure according to the shape of the hole; a side slope hanging net shotcrete anchor support is arranged, and after reinforcement is completed, a hole body is excavated; according to the technical scheme, construction measures and a reinforcing scheme are optimized, a rapid construction working face can be formed on the premise that safety is guaranteed, operation safety of the existing railway line is guaranteed, and the construction speed is high compared with an original treatment method.
本发明公开了一种双侧近接偏压隧道不良地质段进洞施工方法，涉及偏压隧道进洞技术领域，其中，双侧近接偏压隧道不良地质段进洞施工方法包括以下步骤：对洞口仰坡进行清理、防护，并完善洞口的截、排水措施；开挖至隧道拱部起拱线位置，设置初支钢拱架，并在拱脚各处设置锁脚锚管；在拱顶的靠山体侧设置注浆小导管，并通过注浆泵进行注浆加固；根据洞口形状浇筑拱形混凝土结构；设置边坡挂网喷锚支护，加固完成后再进行洞身开挖；本发明提供的技术方案优化施工措施和加固方案，在安全有保障的前提下可形成快速施工工作面，确保了既有铁路线的运营安全，较原有的处理方法施工速度快。
Hole-entering construction method for unfavorable geological section of double-side approaching bias pressure tunnel
The invention discloses a hole entering construction method for an unfavorable geological section of a double-side approaching and unsymmetrical pressure tunnel, and relates to the technical field of hole entering of unsymmetrical pressure tunnels, the hole entering construction method for the unfavorable geological section of the double-side approaching and unsymmetrical pressure tunnel comprises the following steps: cleaning and protecting an upward slope of a hole opening, and perfecting water interception and drainage measures of the hole opening; excavating to an arch camber line position of a tunnel arch part, arranging a primary support steel arch frame, and arranging feet-lock anchor pipes at all positions of an arch foot; a small grouting guide pipe is arranged on the side, close to the mountain, of the arch crown, and grouting reinforcement is conducted through a grouting pump; pouring an arched concrete structure according to the shape of the hole; a side slope hanging net shotcrete anchor support is arranged, and after reinforcement is completed, a hole body is excavated; according to the technical scheme, construction measures and a reinforcing scheme are optimized, a rapid construction working face can be formed on the premise that safety is guaranteed, operation safety of the existing railway line is guaranteed, and the construction speed is high compared with an original treatment method.
本发明公开了一种双侧近接偏压隧道不良地质段进洞施工方法，涉及偏压隧道进洞技术领域，其中，双侧近接偏压隧道不良地质段进洞施工方法包括以下步骤：对洞口仰坡进行清理、防护，并完善洞口的截、排水措施；开挖至隧道拱部起拱线位置，设置初支钢拱架，并在拱脚各处设置锁脚锚管；在拱顶的靠山体侧设置注浆小导管，并通过注浆泵进行注浆加固；根据洞口形状浇筑拱形混凝土结构；设置边坡挂网喷锚支护，加固完成后再进行洞身开挖；本发明提供的技术方案优化施工措施和加固方案，在安全有保障的前提下可形成快速施工工作面，确保了既有铁路线的运营安全，较原有的处理方法施工速度快。
Hole-entering construction method for unfavorable geological section of double-side approaching bias pressure tunnel
双侧近接偏压隧道不良地质段进洞施工方法
WANG LIANG (Autor:in) / YANG JIE (Autor:in) / JIA FEI (Autor:in) / WANG HONGWEI (Autor:in) / HUANG CHENG (Autor:in) / GONG LUN (Autor:in)
05.07.2024
Patent
Elektronische Ressource
Chinesisch
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