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对外开放政策有力地推动了现代城建工作的进程,尤其是特区和开放城市,以及海港地区高层建筑的发展,对地质基础勘察和基础加固提出了更严格的要求,从而促进了钻探技术进一步向横向扩展。此类基础工程,钻孔口径大(多在1米以上);深度浅(一般几米至几十米);大量在松散表土层中施工;施工期限短;对钻孔与基础桩的质量要求高,并有专门规范和检测措施;施工场地窄,给大型设备的安装、操作带来了困难。 1985年,笔者参加了冶金部第一勘察基础工
The open-door policy has strongly promoted the progress of modern urban construction work, especially the development of special zones and open cities, as well as high-rise buildings in the seaport area. It puts forward more stringent requirements for geological foundation surveys and foundation reinforcement, and thus promotes drilling technology to further horizontal Extensions. This type of foundation project has large borehole diameter (more than 1 meter), shallow depth (usually several meters to several tens of meters), large amount of construction in loose topsoil, short construction period, high quality requirements for drilling and foundation piles. , and there are special regulations and testing measures; construction site is narrow, and it has brought difficulties to the installation and operation of large-scale equipment. In 1985, the author participated in the first survey of the Ministry of Metallurgical Fundamentals