Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of anti-floating anchor rod for karst cave in limestone area
The invention discloses a construction method of an anti-floating anchor rod for a karst cave in a limestone area. According to the construction method, a composite film bag is combined with a fractional grouting technology, a large-size inclusion is formed by grouting in the composite film bag in a karst cave and a fracture development section, an anchoring body larger than the hole diameter of an anchor rod is formed in the karst cave, the embolism effect is achieved, meanwhile, a karst cavity is blocked to a certain degree, and the water stopping effect is achieved; and then grouting is conducted on the anchor rod holes in the upper portion and the lower portion of the film bag correspondingly. The anchoring plug plays an effective anchoring role, and then the grouting effect of the upper section and the lower section of the karst cave is effectively guaranteed, so that the anchoring force of the anchor rod can be guaranteed, and the problem that the anchor rod construction in the karst cave and the corrosion crack area is difficult is solved.
本发明公开了一种灰岩地区溶洞抗浮锚杆的施工方法。所述施工方法利用复合膜袋结合分次注浆技术，在溶洞及裂隙发育段采用复合膜袋内注浆形成较大体积的包裹体，在溶洞内形成一个大于锚杆孔径的锚固体，起到栓塞作用，同时对岩溶腔体进行一定封堵，起到止水作用，然后分别对膜袋上部和下部的锚杆孔进行注浆。本发明中的锚固栓塞起到有效锚固作用，然后溶洞上下段的注浆效果得到了有效保证，从而能确保锚杆的锚固力，解决了溶洞及溶蚀裂隙区域锚杆施工困难的问题。
Construction method of anti-floating anchor rod for karst cave in limestone area
The invention discloses a construction method of an anti-floating anchor rod for a karst cave in a limestone area. According to the construction method, a composite film bag is combined with a fractional grouting technology, a large-size inclusion is formed by grouting in the composite film bag in a karst cave and a fracture development section, an anchoring body larger than the hole diameter of an anchor rod is formed in the karst cave, the embolism effect is achieved, meanwhile, a karst cavity is blocked to a certain degree, and the water stopping effect is achieved; and then grouting is conducted on the anchor rod holes in the upper portion and the lower portion of the film bag correspondingly. The anchoring plug plays an effective anchoring role, and then the grouting effect of the upper section and the lower section of the karst cave is effectively guaranteed, so that the anchoring force of the anchor rod can be guaranteed, and the problem that the anchor rod construction in the karst cave and the corrosion crack area is difficult is solved.
本发明公开了一种灰岩地区溶洞抗浮锚杆的施工方法。所述施工方法利用复合膜袋结合分次注浆技术，在溶洞及裂隙发育段采用复合膜袋内注浆形成较大体积的包裹体，在溶洞内形成一个大于锚杆孔径的锚固体，起到栓塞作用，同时对岩溶腔体进行一定封堵，起到止水作用，然后分别对膜袋上部和下部的锚杆孔进行注浆。本发明中的锚固栓塞起到有效锚固作用，然后溶洞上下段的注浆效果得到了有效保证，从而能确保锚杆的锚固力，解决了溶洞及溶蚀裂隙区域锚杆施工困难的问题。
Construction method of anti-floating anchor rod for karst cave in limestone area
一种灰岩地区溶洞抗浮锚杆的施工方法
ZHAO JIANHAI (Autor:in) / LIU ZHIHANG (Autor:in)
08.04.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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