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土鑽的应用范围及特点土鑽适用于各种軟的及松散的地层。鑽孔直径根据各个不同勘探阶段的要求和目的而定。在地质普查及地貿测繪中,鑽孔直径多为1″—2″,深度5—10米;在基本建設工程及工程地质勘察时,鑽孔直徑3″—4(?)″,深度15—20米;在进行供水及水工建筑等大型建筑物及建筑材料勘探时,鑽孔直径一般6″—10″,最
Application and Characteristics of Earth Drills Earth Drills are suitable for a variety of soft and loose formations. The diameter of the hole is determined according to the requirements and purposes of each different exploration phase. In geological surveys and surveys of local trade, borehole diameters are mostly 1′′-2′′, and depths are 5-10 metres. In the capital construction and engineering geological surveys, borehole diameters are 3′′-4′′′′ depths. 15-20 meters; in the exploration of large-scale buildings and building materials such as water supply and hydraulic construction, the diameter of drill holes is generally 6′′-10′′.