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Remediation of Progressive Slope Failure

机译:修复坡度渐进破坏

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On Norfolk Southern Railway's CNO & TP Lake Division near Crescent Springs, Kentucky, there was a progressive slope failure that accelerated with spring rains and thawing to the point where there was concern for the stability of the rail line. Fenton was contracted to perform emergency remediation work to stabilize the slope for 500 linear ft. Fenton installed 70 drilled shafts as soldier piles then drove sheet piles behind the piles for lagging. Nicholson then installed 26, 88-kip tieback anchors bonded in rock. The 70-foot-long anchors were installed using duplex drilling techniques with an excavator mounted TEI drill mast. The excavator was able to drill from the top of the slope reaching over to install the anchors. Anchors were drilled through ballast, clay, and into weathered shale and limestone. After the anchors were installed, Fenton installed walers to connect the anchors to the solider piles. This provided the stabilization required to stop the progressive slope failure.
机译:在肯塔基州新月泉附近的诺福克南部铁路公司的CNO和TP湖分区,随着春季雨水的融化,坡度的破坏逐渐加剧,并解冻到了铁路稳定性的地步。 Fenton被合同执行紧急修复工作,以稳定500线性英尺的斜坡。Fenton安装了70个钻探井筒,以作为士兵堆,然后将板桩驱赶到桩后面以进行滞后处理。 Nicholson然后安装了26个88千转的绑在岩石上的回拉锚。 70英尺长的锚杆是使用双向钻孔技术和安装在挖掘机上的TEI钻杆安装的。挖掘机能够从斜坡的顶部钻到安装锚点。锚定物通过压舱物,黏土钻入风化的页岩和石灰石中。在安装锚点之后,Fenton安装了沃勒斯将锚点连接到较坚固的桩上。这提供了停止渐进式斜坡故障所需的稳定性。

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