据了解目前有些同志当利用钻具作钻孔中的提水试验时，其所量得的“地下水位”往往忽略了钻具触水后地下水面进入钻具内的高度，现拟谈一谈消除上述误差的个人意见：如图1，于水龙头处设一水哨，当钻具放入钻孔，岩心管插入水面后，便会因钻具内部空气体积被压缩而由水哨发出丝丝的响声。 It is understood that at present some comrades use drilling tools for drilling in the water lifting test, the amount of “groundwater level” is often overlooked after the drill touch groundwater surface into the height of the drill, it is intended to talk about Personal opinion to eliminate the above error: As shown in Figure 1, a water whistle is set at the faucet. When the drilling tool is inserted into the borehole, the core pipe is inserted into the water and the water will be sent out by the water whistle because the air volume inside the drilling tool is compressed The sound.