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我队在某地区承担工业与民用建筑地基基础勘察任务。该地区地层主要为亚粘土、砂性土及含淤泥质的砂（粘）性土。地下水位一般在10m左右。粘性土的液性指数最大为0.50，属硬塑（或可塑）状态的低压缩性土；砂性土的相对密度D_r＜0.67，属于松散、中密程度的砂性土。孔深一般为10～20m。施工中所用设备为DPP-100-3型汽车钻机，可冲击回转成孔；也可压入（或击入）取样。所采用的取样工具为φ108型自由球阀式取土器和φ100型活阀式取土器；成孔钻具为普通合金钻具和抽筒钻具。
Our team undertakes the task of surveying the foundation of industrial and civil buildings in a certain area. The strata in the area are mainly sub-clay, sandy soil and silt-laden sand (viscous) soil. The groundwater level is generally around 10m. The maximum liquidity index of cohesive soil is 0.50, which is a low-compressive soil in a hard plastic (or plastic) state; the relative density of sandy soil is D_r<0.67, which is a loose, medium density sand soil. The hole depth is generally 10 to 20m. The equipment used in the construction is DPP-100-3 car drilling rig, which can be turned into holes by impact; it can also be pressed into (or hit into) the sample. The sampling tools used were φ108 type free ball valve type earth picker and φ100 type valve type earth picker; the hole drilling tools were ordinary alloy drilling tools and sucker tube drilling tools.