这里所谈的是冶金业厂房地下构筑物(大多是主电室高压电缆隧道)渗、漏水的防堵问题。隧道内渍水多了,电缆便浸泡在含有油垢杂质的污水中,被复层腐蚀后使引起漏电,导致“短路”,严重的还会发生爆炸事故。漏水的原因,一是地表水、生产冷却废水由构筑物的缝隙、孔洞等渗入。二是地下水。“○七”工程地下构筑物是日本和西德设计的。日本设计的硅钢片厂和热轧厂的地下构筑物,既未设计渗排水层,也未作防水层。竣工后交验时即有三个地坑渗漏。投产后有三十多处出观渗、漏水。冷轧厂地下构筑物是西德设计的,设计了渗排水层,由于施工单位取消了部分防水措施。因此带来了严重后果。“MJ—1”的补漏效果和操作要点 What we are talking about here is the anti-blocking problem of underground structures (mostly high-voltage cable tunnels in the main electric room) of the metallurgical industry for seepage and leakage. The water in the tunnel is much more water, and the cable is immersed in the sewage containing dirt and impurities. After being corroded by multiple layers, it causes leakage, which leads to a “short circuit” and serious explosion accidents. One of the causes of water leakage is surface water and production cooling wastewater that is penetrated by gaps, holes, and other structures. The second is groundwater. The “○ 7” project underground structure was designed by Japan and West Germany. The underground structures of the silicon sheet and hot rolling mills designed by Japan have neither designed a drainage layer nor a waterproof layer. After the completion of the inspection, there are three pit leaks. After the production, there were more than 30 observations and leaks. The underground structure of the cold rolling plant was designed by West Germany. The seepage drainage layer was designed because the construction unit cancelled some of the waterproof measures. This has brought serious consequences. “MJ-1” trapping effect and operation points