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A platform for research: civil engineering, architecture and urbanism
Blasting excavation system for land rock foundation pit and construction method applying same
The invention provides a blasting excavation system for a land rock foundation pit and a construction method applying the same. An even wall is arranged on the rock stratum around the foundation pit,the upper ends of anchor bars are integrally connected with reinforcing bars of the even wall, the lower ends of the anchor bars are vertically embedded in the rock stratum, engineering piles are arranged in pile pits of the foundation pit, the pile pits are formed in the rock stratum of the central zone of the foundation pit, anti-collision rubber layers are arranged on and wrap the exposed portions of the engineering piles, embedded drag hooks are arranged on the upper ends of the even wall and the engineering piles, a protection net is fixed to the embedded drag hooks and arranged on a foundation pit opening, a construction platform is arranged on the top ends of the engineering piles, one end of a construction trestle is arranged on the construction platform, the other end of the construction trestle is arranged on the top end of the even wall, vertical blast holes are formed in the central area of the rock stratum of the foundation pit, and inclined blast holes are formed in the area, close to the edge rock stratum, of the foundation pit. The after-digging rock slope reserved through final blasting is dug by adopting a cutter in combination with static blasting to form a natural rock retaining structure, and the lossless connection between the system and the reinforced concrete even wall of the upper portion is guaranteed.
本发明提供一种土岩基坑爆破开挖体系及应用其的施工方法，地连墙设置在基坑周边的岩层上，锚筋上端与地连墙的配筋连为一体，下端垂直嵌固入岩层中，工程桩设置在基坑内的桩坑中，桩坑设置在基坑中心带岩层中，防撞橡胶层设置包裹在工程桩裸露部分处，预埋拉钩设置在地连墙和工程桩上端，防护网固定在预埋拉钩上，设置在基坑口，施工平台设置在工程桩顶端，施工栈桥一端设置在施工平台上，另一端设置在地连墙顶端，竖向炮孔设置在基坑岩层中心区域，斜向炮孔设置在基坑靠边岩层区域；最后爆破预留的后挖岩体斜坡采用切割机结合静力爆破进行开挖，形成天然的岩质支挡结构，保证与上部的钢筋混凝土地连墙无损连接。
Blasting excavation system for land rock foundation pit and construction method applying same
The invention provides a blasting excavation system for a land rock foundation pit and a construction method applying the same. An even wall is arranged on the rock stratum around the foundation pit,the upper ends of anchor bars are integrally connected with reinforcing bars of the even wall, the lower ends of the anchor bars are vertically embedded in the rock stratum, engineering piles are arranged in pile pits of the foundation pit, the pile pits are formed in the rock stratum of the central zone of the foundation pit, anti-collision rubber layers are arranged on and wrap the exposed portions of the engineering piles, embedded drag hooks are arranged on the upper ends of the even wall and the engineering piles, a protection net is fixed to the embedded drag hooks and arranged on a foundation pit opening, a construction platform is arranged on the top ends of the engineering piles, one end of a construction trestle is arranged on the construction platform, the other end of the construction trestle is arranged on the top end of the even wall, vertical blast holes are formed in the central area of the rock stratum of the foundation pit, and inclined blast holes are formed in the area, close to the edge rock stratum, of the foundation pit. The after-digging rock slope reserved through final blasting is dug by adopting a cutter in combination with static blasting to form a natural rock retaining structure, and the lossless connection between the system and the reinforced concrete even wall of the upper portion is guaranteed.
本发明提供一种土岩基坑爆破开挖体系及应用其的施工方法，地连墙设置在基坑周边的岩层上，锚筋上端与地连墙的配筋连为一体，下端垂直嵌固入岩层中，工程桩设置在基坑内的桩坑中，桩坑设置在基坑中心带岩层中，防撞橡胶层设置包裹在工程桩裸露部分处，预埋拉钩设置在地连墙和工程桩上端，防护网固定在预埋拉钩上，设置在基坑口，施工平台设置在工程桩顶端，施工栈桥一端设置在施工平台上，另一端设置在地连墙顶端，竖向炮孔设置在基坑岩层中心区域，斜向炮孔设置在基坑靠边岩层区域；最后爆破预留的后挖岩体斜坡采用切割机结合静力爆破进行开挖，形成天然的岩质支挡结构，保证与上部的钢筋混凝土地连墙无损连接。
Blasting excavation system for land rock foundation pit and construction method applying same
土岩基坑爆破开挖体系及应用其的施工方法
TANG ZHEN (author) / YU WUJIANG (author) / PENG SHUNXIN (author) / CAI JIANG (author) / SUN KEJIN (author)
2020-10-30
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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