No combined exploitation of paretic water and artesian water already polluted may be permitted. 對已受污染的潛水和承壓水，不得混合開採。
Satisfying the sufficient mechanics condition for key stratum instability, a water inrush is likely to happen in the floor. 當滿足關鍵層失穩的充要力學條件時，承壓水底板有可能發生失穩突水。
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