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为了在不扰动滑坡结构稳定性的情况下更准确地揭示滑坡中滑带及滑体、滑床的岩土组成与结构特征及物理力学性质,在滑坡勘查中,往往用探井来采集土样并进行现场大剪切试验。目前,现场大剪切试验使用的大截面矩形探井,存在工程量大、安全性低等缺点,本论文结合工程中常用的矩形探井与圆形探井的优缺点分析,提出圆井-导洞型探井,并结合实例从经济性和安全性等方面与矩形探井分析比较,结果表明,该方法应用于实际更具优越性。
In order to reveal more accurately the geotechnical composition, structural characteristics and physical and mechanical properties of the landslide and the sliding body and the sliding bed without disturbing the stability of the landslide structure, the exploration wells are often used to collect soil samples during landslide exploration Perform on-site large shear test. At present, the large-area rectangular exploration wells used in the large-shear tests in the field have the disadvantages of large engineering quantities and low safety. Based on the analysis of the advantages and disadvantages of the rectangular exploration wells and circular exploration wells commonly used in engineering, Exploration wells, and compared with the rectangular exploration from economic and security aspects with examples, the results show that the method is more practical and more advantages.