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核心区架空线入地开工超七成

2017-08-25 14:56:24   中国青年网

今天凌晨,景山地区架空线入地工程进入冲刺阶段。程功摄 J129

今天凌晨,景山地区架空线入地工程进入冲刺阶段。程功摄 J129

箱变吊装、地下电缆敷设、验收发电……午夜12点刚过,电力施工人员便迅速在景山周边各个施工现场开始了紧张的施工。今天凌晨,景山周边架空线入地工程进入冲刺阶段。架空线入地工程建设现场指挥部常务副指挥魏世岭向记者报出了这样一组数据:由国网北京电力承担的首都核心区电力架空线入地工程已竣工6项,开工在施37项,开工率达到70%以上。

核心区68条道路架空线将入地

今年,全市启动了“架空线入地大会战”,按照计划,全市将在首都核心区东、西城区范围内,对68条共计65.2公里道路两侧的架空线路进行入地改造。

“68条路架空线入地是今年北京市定下的年度任务,不过在实施过程中,有一些架空线入地工程可能会随路建设。”魏世岭解释说,比如,有的道路正好今年要大修,为了避免重复施工,就等道路大修时一起进行架空线入地的施工。还有像三里河、月坛南街、月坛北街这样的道路,架空线入地是西城区政府单独组织的。刨去这些道路,这次电力公司作为建设单位承担的架空线入地道路一共是58条。

电缆入地20年基本“没问题”

零时30分,北长街与文津街交叉路口一片灯火通明,满载设备的工程车一辆接一辆停靠在路边,近百名电力施工工人小心地挥舞起手中的铁镐,将人行步道的路面刨开1米深、50厘米宽的浅沟。

“把低压电缆敷设入沟,这里面就是接入到老百姓家中的供电电缆。”国网北京城区供电公司建设部副主任李宁告诉记者,一晚上就能把这个工程“抢”出来。

将电缆埋在地底下,比架设在空中,有哪些好处呢?李宁说,埋在地下的电缆折旧周期通常在20年左右,只要不是外力恶意破坏,20年基本都不会出现问题;等过了20年之后,地下的电缆其实还能用,但是会建议对其进行批量更换。“但是架空线就不行了,最多三五年就得重新更换一次,或是进行检修。”现在基本每年都会对城区范围内的部分架空线分批分拨进行大修,对老旧的线进行更换或者检修。虽然架空线的成本相对较低,但是维护起来还是挺费劲的,而且每次维护都需要停电,对百姓生活造成影响。

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