冠诚清淤机械:
1.开挖方向的确定:为分析水流方向对挖泥船施工效率的影响,施工过程中分别对顺、逆流开挖进行试验,实验结果表明,采用顺流开挖挖泥船效率较低,含沙量约为7%—10%(体积比,下同),而逆流开挖效率较高,含沙量达10%~12%,最高达17%。并且在顺流开挖时,由于水流压力,水上输泥管线易打弯,施工受到一定影响;在逆流开挖时,管线畅通。
2.边坡开挖:设计开挖边坡1:5,清淤设备根据疏浚施工技术规范,采用下超上欠的阶梯开挖法,自然塌落形成边坡,坡比接近1:4~1:6之间
Crown-dredging machinery:
1. The excavation to determine the direction: to analyze the flow direction of impact on the efficiency of the dredger construction, respectively, along the course of construction, excavation countercurrent test, experimental results show that the use of low downstream dredger excavating efficiency, sediment concentration of about 7% -10% (volume ratio, the same below), while the higher efficiency counterflow excavation, sediment concentration up to 10% ~ 12%, up to 17%. And when the downstream excavation, due to the water pressure, water transmission pipelines mud easy clinchers, construction affected to some extent; excavation at reflux, the pipeline flow.
2. slope excavation: Design excavation slope of 1: 5, according to dredging dredging equipment specification, using the ultra-ladder on less excavation method, the natural formation slump slope, slope ratio close to 1: 4 ~ between 6: 1
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