Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Design and construction method for rock wall crane beam of underground powerhouse of hydropower station
The invention provides a hydropower station underground powerhouse rock wall crane beam design and construction method which comprises the following specific steps: step 1, excavating a high side wall of a powerhouse layer by layer, and excavating a top arch layer, a second layer and a third layer in sequence; secondly, construction equipment for pouring concrete is erected on the third layer; thirdly, concrete is poured on the side wall of the upper portion of the third layer, and a buttress wall and a rock wall crane beam are formed; and fourthly, after pouring in the third step is completed, excavation is conducted to a taper pipe layer according to the high side wall. According to the method, the upstream side wall and the downstream side wall of the plant are vertically excavated, no traditional rock bench structure is formed at the position of the rock anchor beam, the rock bench at the bottom end of the rock wall crane beam is formed by lightly prying after the side wall structure is subjected to presplitting blasting, and a small amount of mechanical shaping is supplemented when necessary, so that the rock bench is basically smooth, and additional special excavation measures do not need to be taken. Therefore, the part from the top arch layer to the taper pipe layer of the plant can be completely excavated according to the high side wall, and the construction period is effectively shortened.
本发明提供一种水电站地下厂房岩壁吊车梁设计施工方法，一种水电站地下厂房岩壁吊车梁设计施工方法，具体步骤为：步骤一，对厂房高边墙分层开挖，依次开挖顶拱层、第二层和第三层；步骤二，在第三层上搭设浇筑混凝土的施工设备；步骤三，在第三层上部的边墙上浇筑混凝土，形成扶壁墙和岩壁吊车梁；步骤四，在步骤三浇筑完成后，按照高边墙开挖至锥管层。本发明中，厂房上下游边墙均采用垂直开挖，在岩锚梁位置不形成传统意义的岩台结构，岩壁吊车梁底端岩台在边墙结构预裂爆破后轻撬形成，必要时辅以少量的机械整形，使岩台基本平顺，不需要采取额外专项的开挖措施。因此，厂房顶拱层以下至锥管层可以全部按照高边墙开挖，有效缩短施工工期。
Design and construction method for rock wall crane beam of underground powerhouse of hydropower station
The invention provides a hydropower station underground powerhouse rock wall crane beam design and construction method which comprises the following specific steps: step 1, excavating a high side wall of a powerhouse layer by layer, and excavating a top arch layer, a second layer and a third layer in sequence; secondly, construction equipment for pouring concrete is erected on the third layer; thirdly, concrete is poured on the side wall of the upper portion of the third layer, and a buttress wall and a rock wall crane beam are formed; and fourthly, after pouring in the third step is completed, excavation is conducted to a taper pipe layer according to the high side wall. According to the method, the upstream side wall and the downstream side wall of the plant are vertically excavated, no traditional rock bench structure is formed at the position of the rock anchor beam, the rock bench at the bottom end of the rock wall crane beam is formed by lightly prying after the side wall structure is subjected to presplitting blasting, and a small amount of mechanical shaping is supplemented when necessary, so that the rock bench is basically smooth, and additional special excavation measures do not need to be taken. Therefore, the part from the top arch layer to the taper pipe layer of the plant can be completely excavated according to the high side wall, and the construction period is effectively shortened.
本发明提供一种水电站地下厂房岩壁吊车梁设计施工方法，一种水电站地下厂房岩壁吊车梁设计施工方法，具体步骤为：步骤一，对厂房高边墙分层开挖，依次开挖顶拱层、第二层和第三层；步骤二，在第三层上搭设浇筑混凝土的施工设备；步骤三，在第三层上部的边墙上浇筑混凝土，形成扶壁墙和岩壁吊车梁；步骤四，在步骤三浇筑完成后，按照高边墙开挖至锥管层。本发明中，厂房上下游边墙均采用垂直开挖，在岩锚梁位置不形成传统意义的岩台结构，岩壁吊车梁底端岩台在边墙结构预裂爆破后轻撬形成，必要时辅以少量的机械整形，使岩台基本平顺，不需要采取额外专项的开挖措施。因此，厂房顶拱层以下至锥管层可以全部按照高边墙开挖，有效缩短施工工期。
Design and construction method for rock wall crane beam of underground powerhouse of hydropower station
一种水电站地下厂房岩壁吊车梁设计施工方法
LIU JUAN (Autor:in) / LV YONGHANG (Autor:in) / YU BIN (Autor:in) / LIU SHANYONG (Autor:in)
01.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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