基岩裂隙水地层抗浮锚杆设计与施工  

Design and construction of anti-floating anchor in bedrock fissure water stratum

作　　者：龚恩德 邓祖保 音俊峰[1,3] GONG Ende;DENG Zubao;YIN Junfeng(No.327 Unit,Bureau of Geology and Mineral Exploration of Anhui Province,Hefei,Anhui 230011,China;Anhui Geotechnical Engineering Co.,Ltd.,Hefei,Anhui 230011,China;Anhui Geotechnical Investigation and Surveying Institute Co.,Ltd.,Hefei,Anhui 230011,China)

机构地区：[1]安徽省地质矿产勘查局327地质队,安徽合肥230011 [2]安徽岩土工程有限责任公司,安徽合肥230011 [3]安徽工程勘察院有限公司,安徽合肥230011

出　　处：《安徽地质》2025年第1期38-41,共4页Geology of Anhui

摘　　要：抗浮锚杆抗拔承载力的大小受岩土体性质特征、地下水、锚杆结构类型和施工工艺等因素影响。若在抗浮锚杆深度范围内存在基岩裂隙承压水,应充分考虑地下水对锚杆施工的影响,根据场地工程地质条件和工程特征,选择合适的设计和施工方案。本文通过对淮南某工程抗浮锚杆设计和施工过程的介绍,分析抗浮锚杆抗拔承载力不满足设计要求的原因,最终选择高压旋喷扩大头锚杆,既降低了锚杆的长度,使锚杆施工尽可能不进入或少进入含水层,同时又对基岩裂隙水起到一定的封堵作用,保证了抗浮锚杆施工顺利进行,提高了抗浮锚杆抗拔承载力。The uplift bearing capacity of anti-floating anchor is affected by factors such as the properties of soil and rock,groundwater,the type of anchor structure,and construction techniques.If there is confined water in bedrock fracture within the depth range of anti-floating anchor,the influence of groundwater on anchor construction should be fully considered,and the appropriate design and construction scheme should be selected according to the engineering geological conditions and engineering characteristics of the site.This paper introduces the design and construction process of anti-floating anchor in a project in Huainan,analyzes why the uplift bearing capacity of anti-floating anchor does not meet the design requirements,and finally selects the underreamed anchor by high-pressure jet grouting,which reduces the length of the anchor,minimizes the entry of the anchor into the aquifer during its construction,plays a certain role in blocking the bedrock fissure water,ensures the smooth construction of the anti-floating anchor and improves its uplift bearing capacity.

关 键 词：基岩裂隙水 抗浮锚杆 抗拔承载力 高压旋喷 扩大头 

分 类 号：P642[天文地球—工程地质学]