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A platform for research: civil engineering, architecture and urbanism
Tunnel excavation supporting method under complex geological conditions of carbonaceous slate mixed with carbonaceous limestone and limestone
The invention provides a tunnel excavation and support method under complex geological conditions of carbonaceous slate mixed with carbonaceous limestone and limestone. The tunnel excavation and support method comprises the steps of tunnel excavation and tunnel support; the tunnel excavation comprises the steps of upper step area construction, lower step area construction and steel support installation. The upper step area construction comprises the steps that blasting operation is carried out firstly, an upper step area is blasted in a millisecond blasting mode, and temporary supporting is carried out; the construction of the lower step area comprises the following steps: blasting the lower step area in a millisecond blasting mode, and carrying out temporary support; the tunnel supporting comprises the step of steel support installation. By means of the method, large-area collapse and creep deformation of the soft rock tunnel in the later period caused by improper blasting in the excavation process can be effectively avoided.
本发明的提供了一种炭质板岩夹杂炭质灰岩和灰岩复杂地质条件隧洞开挖支护方法，包括：隧洞开挖和隧洞支护；隧洞开挖包括：上台阶区域施工、下台阶区域施工和钢支撑安装；其中，上台阶区域施工包括：先进行爆破作业，采用微差爆破方式对上台阶区域爆破，并进行临时支护；下台阶区域施工包括：采用微差爆破方式对下台阶区域爆破，并进行临时支护；隧洞支护包括：钢支撑安装，该发明能有效避免在开挖过程中爆破不当导致大面积塌方和软岩隧洞后期的蠕变变形。
Tunnel excavation supporting method under complex geological conditions of carbonaceous slate mixed with carbonaceous limestone and limestone
The invention provides a tunnel excavation and support method under complex geological conditions of carbonaceous slate mixed with carbonaceous limestone and limestone. The tunnel excavation and support method comprises the steps of tunnel excavation and tunnel support; the tunnel excavation comprises the steps of upper step area construction, lower step area construction and steel support installation. The upper step area construction comprises the steps that blasting operation is carried out firstly, an upper step area is blasted in a millisecond blasting mode, and temporary supporting is carried out; the construction of the lower step area comprises the following steps: blasting the lower step area in a millisecond blasting mode, and carrying out temporary support; the tunnel supporting comprises the step of steel support installation. By means of the method, large-area collapse and creep deformation of the soft rock tunnel in the later period caused by improper blasting in the excavation process can be effectively avoided.
本发明的提供了一种炭质板岩夹杂炭质灰岩和灰岩复杂地质条件隧洞开挖支护方法，包括：隧洞开挖和隧洞支护；隧洞开挖包括：上台阶区域施工、下台阶区域施工和钢支撑安装；其中，上台阶区域施工包括：先进行爆破作业，采用微差爆破方式对上台阶区域爆破，并进行临时支护；下台阶区域施工包括：采用微差爆破方式对下台阶区域爆破，并进行临时支护；隧洞支护包括：钢支撑安装，该发明能有效避免在开挖过程中爆破不当导致大面积塌方和软岩隧洞后期的蠕变变形。
Tunnel excavation supporting method under complex geological conditions of carbonaceous slate mixed with carbonaceous limestone and limestone
一种炭质板岩夹杂炭质灰岩和灰岩复杂地质条件隧洞开挖支护方法
XIA YUYUN (author) / ZHOU RENFEI (author) / PANG GUOLIANG (author) / RYU MIN (author) / WANG RAN (author) / QIAO JIANWEI (author) / HUANG LEI (author)
2024-04-26
Patent
Electronic Resource
Chinese
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