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A platform for research: civil engineering, architecture and urbanism
Water inrush treatment and reinforcement method for foundation pit in karst area
The invention provides a water inrush treatment and reinforcement method for a foundation pit in a karst area, and the water inrush treatment comprises the following specific steps: determining the position of a karst cave cavity within the range of the foundation pit; analyzing and evaluating the risk level of sudden water inrush damage when the foundation pit is excavated to the preset depth and the foundation pit is used; a flow guide hole is vertically formed, the bottom end of the flow guide hole penetrates through the karst cave cavity, a flow guide pipe is arranged in the flow guide hole in a sleeved mode, and a water permeable hole is formed in the side wall of the flow guide pipe located in the karst cave cavity; fixing the flow guide pipe; a plurality of broken stone filling holes communicated with the karst cave cavity are vertically formed, and flow meters used for observing water burst are inserted into the broken stone filling holes; the karst cave cavity is filled with broken stones through the broken stone filling holes; and foundation pit excavation supporting and underground water inrush monitoring are carried out. Potential follow-up risks caused by blocking in traditional karst cavity treatment can be overcome, and the anti-pulling and anti-compression bearing capacity of the foundation pit is improved.
本发明提供一种岩溶地区基坑的突涌水治理及加固方法，其中，突涌水治理包括以下具体步骤：确定基坑范围内溶洞空腔位置；分析评价在基坑开挖至预设深度，及基坑使用阶段发生突涌水破坏的风险等级；垂直设置导流孔，所述导流孔的底端穿过溶洞空腔，且所述导流孔内套设导流管，位于溶洞空腔内的导流管侧壁上设置透水孔；固定导流管；垂直设置若干个与溶洞空腔连通的碎石填放孔，并往碎石填放孔内插入用于突涌水观测的流量计；通过碎石填放孔向溶洞空腔内填充碎石；基坑开挖支护与地下突涌水监测。本发明能够克服传统岩溶空腔处理中通过封堵而导致的潜在后续风险，提高基坑的抗拔和抗压承载能力。
Water inrush treatment and reinforcement method for foundation pit in karst area
The invention provides a water inrush treatment and reinforcement method for a foundation pit in a karst area, and the water inrush treatment comprises the following specific steps: determining the position of a karst cave cavity within the range of the foundation pit; analyzing and evaluating the risk level of sudden water inrush damage when the foundation pit is excavated to the preset depth and the foundation pit is used; a flow guide hole is vertically formed, the bottom end of the flow guide hole penetrates through the karst cave cavity, a flow guide pipe is arranged in the flow guide hole in a sleeved mode, and a water permeable hole is formed in the side wall of the flow guide pipe located in the karst cave cavity; fixing the flow guide pipe; a plurality of broken stone filling holes communicated with the karst cave cavity are vertically formed, and flow meters used for observing water burst are inserted into the broken stone filling holes; the karst cave cavity is filled with broken stones through the broken stone filling holes; and foundation pit excavation supporting and underground water inrush monitoring are carried out. Potential follow-up risks caused by blocking in traditional karst cavity treatment can be overcome, and the anti-pulling and anti-compression bearing capacity of the foundation pit is improved.
本发明提供一种岩溶地区基坑的突涌水治理及加固方法，其中，突涌水治理包括以下具体步骤：确定基坑范围内溶洞空腔位置；分析评价在基坑开挖至预设深度，及基坑使用阶段发生突涌水破坏的风险等级；垂直设置导流孔，所述导流孔的底端穿过溶洞空腔，且所述导流孔内套设导流管，位于溶洞空腔内的导流管侧壁上设置透水孔；固定导流管；垂直设置若干个与溶洞空腔连通的碎石填放孔，并往碎石填放孔内插入用于突涌水观测的流量计；通过碎石填放孔向溶洞空腔内填充碎石；基坑开挖支护与地下突涌水监测。本发明能够克服传统岩溶空腔处理中通过封堵而导致的潜在后续风险，提高基坑的抗拔和抗压承载能力。
Water inrush treatment and reinforcement method for foundation pit in karst area
一种岩溶地区基坑的突涌水治理及加固方法
WANG FUMING (author) / LIANG HUQING (author) / TANG MENGXIONG (author) / PAN YANHUI (author) / FENG LEI (author)
2023-12-26
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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