To ensure proper maintenance and repair of buried water-carrying services,leakage from which might otherwise endanger slopes,508 fill slopes were studied,resulting in the issue of 18 investigation/repair orders.

• 为确保地下输水设施得到妥善保养和维修(这些设施如漏水会影响斜坡安全)，该署研究了508幅填土斜坡，结果共发出18份勘测/修葺令。