Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of deep foundation pit supporting anti-seepage system of coastal karst stratum
The invention discloses a construction method of a deep foundation pit supporting anti-seepage system of a coastal karst stratum. The deep foundation pit supporting anti-seepage system of the coastalkarst stratum comprises a supporting structure, a karst cave treatment structure and a horizontal waterproof curtain. According to the karst cave treatment measure, the risk that the karst cave develops rapidly under the action of underground water can be prevented, the risk that a supporting structure collapses during construction and a foundation pit suddenly surges under the action of high-water-head karst confined water is avoided, and the karst local collapse resistance of the foundation is improved. The drilling secant pile and inner support combined supporting system is good in supporting effect and small in deformation capacity of the supporting structure, waterproof measures such as a waterproof curtain do not need to be additionally taken, and the situation of water seepage rarely occurs to the side wall of the foundation pit. According to the horizontal waterproof curtain, the bottom area of the foundation pit is subjected to waterproof treatment in a grouting mode, an effective channel of karst fissure water at the pit bottom can be effectively cut off, and the problem of water burst at the pit bottom is thoroughly solved.
本发明公开了一种滨海岩溶地层的深基坑支护防渗体系的施工方法，所述的滨海岩溶地层的深基坑支护防渗体系，包括支护结构、溶洞处理结构和水平向止水帷幕。本发明的溶洞处理措施可预防溶洞在地下水作用下迅速发展的风险，避免了支护结构在施工时产生坍塌和基坑在高水头岩溶承压水作用下发生突涌的风险，提高了地基抗岩溶局部坍塌的能力。本发明的钻孔咬合桩+内支撑的联合支护体系不仅支护效果好、支护结构变形能力小，而且无须另外辅以止水帷幕等防水措施，基坑侧壁很少出现渗水情况。本发明的水平向止水帷幕是采用注浆的方式对基坑底部区域进行止水处理，可有效切断坑底岩溶裂隙水的有效通道，彻底解决坑底涌水的问题。
Construction method of deep foundation pit supporting anti-seepage system of coastal karst stratum
The invention discloses a construction method of a deep foundation pit supporting anti-seepage system of a coastal karst stratum. The deep foundation pit supporting anti-seepage system of the coastalkarst stratum comprises a supporting structure, a karst cave treatment structure and a horizontal waterproof curtain. According to the karst cave treatment measure, the risk that the karst cave develops rapidly under the action of underground water can be prevented, the risk that a supporting structure collapses during construction and a foundation pit suddenly surges under the action of high-water-head karst confined water is avoided, and the karst local collapse resistance of the foundation is improved. The drilling secant pile and inner support combined supporting system is good in supporting effect and small in deformation capacity of the supporting structure, waterproof measures such as a waterproof curtain do not need to be additionally taken, and the situation of water seepage rarely occurs to the side wall of the foundation pit. According to the horizontal waterproof curtain, the bottom area of the foundation pit is subjected to waterproof treatment in a grouting mode, an effective channel of karst fissure water at the pit bottom can be effectively cut off, and the problem of water burst at the pit bottom is thoroughly solved.
本发明公开了一种滨海岩溶地层的深基坑支护防渗体系的施工方法，所述的滨海岩溶地层的深基坑支护防渗体系，包括支护结构、溶洞处理结构和水平向止水帷幕。本发明的溶洞处理措施可预防溶洞在地下水作用下迅速发展的风险，避免了支护结构在施工时产生坍塌和基坑在高水头岩溶承压水作用下发生突涌的风险，提高了地基抗岩溶局部坍塌的能力。本发明的钻孔咬合桩+内支撑的联合支护体系不仅支护效果好、支护结构变形能力小，而且无须另外辅以止水帷幕等防水措施，基坑侧壁很少出现渗水情况。本发明的水平向止水帷幕是采用注浆的方式对基坑底部区域进行止水处理，可有效切断坑底岩溶裂隙水的有效通道，彻底解决坑底涌水的问题。
Construction method of deep foundation pit supporting anti-seepage system of coastal karst stratum
一种滨海岩溶地层的深基坑支护防渗体系的施工方法
QI KELU (Autor:in) / SHAO JUNHUI (Autor:in) / WANG HAITAO (Autor:in) / GUO TAO (Autor:in) / WANG HONGYI (Autor:in) / BAI HAILONG (Autor:in) / YAN XING (Autor:in) / LIU YU (Autor:in) / AN DEHUA (Autor:in) / GUO WANGEN (Autor:in)
21.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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