Piezometers

A piezometer is a piezometric observation point, which is either a work built by man (wells, drilling, gravel pit, ...), or a natural point (source, aven, cave, ...) that allows to measure the level of a tablecloth. Theoretically, a piezometer measures only the level of one and only one tablecloth. In fact, a piezometer can reach several layers whose piezometric levels may be different.测压管（piezometer）是一类测压观测点位，其既可为人工构筑物（如水井、钻孔、砾石采石场等），也可属天然点位（如泉源、落水洞、洞穴等），可用于测定某一地下水位层的水位。 理论上，一根测压管仅能测定且仅对应一个地下水位层的水位。实际中，一根测压管可触及多个含水层，各层的测压水位可能互不相同。