抛掷爆破技术在马鞍石堰塞湖应急排险处置中的应用
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摘要
马鞍石堰塞湖由石坎河左岸山体滑坡堵塞而成,其对外交通全部中断。因受机械设备吊运影响,除险泄流槽采用人工开挖的方式进行。通过合理确定爆破参数,成功地进行了4次抛掷爆破拉槽,再人工捡底的方法开挖出了一条底宽约2m、深约3m,长282m的泄流槽。
Maanshi Landslide Dam was formed by the landslide of mountain body at the left bank of Shikanhe River,for which all the external traffics were cut off.As the construction equipments can not be transported therein,the water diversion trench for the risk-elimination of the landslide dam had to be manually excavated.Therefore,four times of casting blasts were successfully made for the trench-excavation cutting at first based on a reasonable determination of the blasting parameters and then a water diversion trench with the bottom width of 2 m,depth of 3 m and the length of 282 m was manually cleared and excavated at last.
Maanshi Landslide Dam was formed by the landslide of mountain body at the left bank of Shikanhe River,for which all the external traffics were cut off.As the construction equipments can not be transported therein,the water diversion trench for the risk-elimination of the landslide dam had to be manually excavated.Therefore,four times of casting blasts were successfully made for the trench-excavation cutting at first based on a reasonable determination of the blasting parameters and then a water diversion trench with the bottom width of 2 m,depth of 3 m and the length of 282 m was manually cleared and excavated at last.
引文
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