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隧洞衬砌延误莱索托高地输水工程莱索托（Ｌｅｓｏｔｈｏ）高地输水工程把凯塞（Ｋａｔｓｅ）坝和姆拉（Ｍｕｅｌａ）水电站连接起来。在输水隧洞北段，承包商决定采用混凝土衬砌隧洞，１９９７年将不能按时送水。４５ｋｍ长的隧洞衬砌完成时，整个工程可能会延期１年。其...
Tunnel Lining Delayed Lesotho Highland Water Diversion Project The Lesotho Highland Water Diversion Project connects the Katse Dam with the Muela Hydropower Station. In the northern section of the water conveyance tunnel, the contractor decided to use concrete lining tunnels and will not be able to deliver water on time in 1997. When the 45km long tunnel lining is completed, the whole project may be delayed for one year. its...