No combined exploitation of paretic water and artesian water already polluted may be permitted. 对已受污染的潜水和承压水,不得混合开采。
Satisfying the sufficient mechanics condition for key stratum instability, a water inrush is likely to happen in the floor. 当满足关键层失稳的充要力学条件时,承压水底板有可能发生失稳突水。