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1、1泥水分离设备概述泥水分离设备概述1G Generaleneral DescriptionDescription ofof STPSTP1.1海瑞克泥水分离设备海瑞克泥水分离设备HSP2800HSP28001.1Herrenknecht Separation Plant, HSP 2800针对出渣能力和排出渣土特性的波动情况，泥水分离设备在隧道施工过程中的设计要具高度灵活性，以避免隧道掘进机外围系统在施工过程中出现瓶颈现象。Separation Plants in tunnelling operations have to be designed with the up-most flexib
2、ility regarding capacity and muck characteristic fluctuations to avoid a bottle neck for the tunnel boring machine (TBM) operation in the peripheral system.海瑞克公司开发的 HSP 系列泥水分离设备，全面支持隧道掘进机的隧道施工， 尤其是与海瑞克公司的隧道掘进机相配套，将更是如鱼得水。Herrenknecht Separation Plant, HSP was developed to fully support the TBM espec
3、ially Herrenknecht TBMs tunnelling progress.1.1.1模块式设计模块式设计1.1.1Modular concept所有主要部件都安置在标准的 30 或 40英尺的集装箱内。人行通道采用宽度为集装箱宽度一半的组件。模块式设计使得对现场面积的要求减到最小，而且方便运输、组建和拆卸。在城市施工环境中，还可以对设备采取噪音隔离措施。All major components are housed in standard 30 or 40 foot containers. Catwallk units have half container width. The
4、 modular concept leads to minimum footprint requirements at site as well as facilitating easy transport, set-up and dismantle. Noise insulation can also be achieved in urban environments.1.1.2分离过程分离过程1.1.2Separation Process海瑞克公司的泥水分离设备的作用是高效地分离传统泥水盾构或海瑞克公司的混合式盾构机在隧道开挖时所用的膨润土悬浮液。在使用这样的隧道掘进系统时，膨润The H
5、SP is designed to effectively regenerate bentonite suspension used in tunnel excavation by means of conventional Hydroshield (Slurry Shield) or Herrenknecht 土悬浮液是作为一种传输流体，用来把隧道掌子面上开挖下来的物料输送到地面，同时还起到对掌子面的支撑作用。泥水分离设备用来在尽量减少膨润土的损失的条件下把膨润土悬浮液中的固体渣料分离出去。分离过的膨润土悬浮液通过泥水循环中的进泥管被重新泵回隧道掌子面。Mixshield. With suc
6、h tunnelling systems, bentonite suspension serves as a carrier fluid for both transport of excavated material from the tunnel face to the surface as well as for face support. The separation plant is used to remove solid material with a minimum loss of suspension. The regenerated suspension is pumped
7、 back to the tunnel face via the feed line of the slurry circuit.分离过程可以分为初级筛分、粗颗粒渣料分离、细颗粒渣料分离和淤泥及粘土的分离四个阶段。The process of separation can be broken down into primary screening, coarse particle separation, fine particle separation and silt and clay separation.对于最后一步的淤泥和粘土的分离，我们采用水平离心机。For the last tre
8、atment step of silt and clay separation, centrifuges are offered as solution.General plant arrangement 设备整体布置1.1.3初级筛分初级筛分1.1.3Primary screening初级筛分是整个分离过程的第一步。一套用于处理盾构机在最大掘进速度下产生的渣料的粗粒筛把较大的渣块分离出来。粗粒筛分离出来的较大块渣料被排放到皮带输送机（未含在供货范围中）上。而通过筛子后的渣料尺寸已小到足以进入下一级分离过程且又不会阻塞系统的程度。Primary screening is the first s
9、tage of the separation process. A scalping screen designed to handle the volumetric flow generated at maximum TBM advance speed separates the larger particles. The material caught by the scalping screen is discharged to a collecting conveyor belt (not included in the scope). Particles passing the sc
10、reen are small enough to be processed at the next stage without clogging the system.Primary Screening HK 17/60 DD - Double Deck system初级筛分- HK 17/60 DD-双层系统Solids Discharge from the Primary Screening初级筛分出来的固体颗粒1.1.4粗颗粒渣料的分离粗颗粒渣料的分离1.1.4Coarse particle separation粗颗粒渣料筛分是第二级分离。通过粗粒筛的渣料被泵入水力漩分器，其筛分粒径为
11、74120 m。通过粗颗粒漩分器下部排放出口的渣料先落到除水筛上脱水，然后再排放到皮带输送机（不在供货范围内）上。而从水力漩分器上部溢流出口排出的渣料则被泵入下一级的漩分进行细颗粒渣料的分离。Coarse particle screening is the second stage of separation. Material passing the scalping screen is pumped into a hydrocyclone stage with a cut point of 74 to 120 m. The material passing the underflow of
12、 the coarse cyclone stage reaches dewatering screen before being discharged onto a collecting conveyor belt (not included in the scope). The hydrocyclone overflow is pumped to the next cyclone stage for fine particle separation.Coarse particle separation HK 824 cyclones粗颗粒渣料的分离- HK 824 旋分器1.1.5细颗粒渣料
13、的分离细颗粒渣料的分离1.1.5Fine particle separation细颗粒渣料通过第二级水力漩分进行，其分离尺寸是 2035m。在前面的一级分离中，被分离出的渣料在被排放到皮带输送机（未含在供货范围中）上之前，通过脱水筛减少了含水量。溢流出的渣料最终被排入膨润土存储池以便随后用来供应给盾构机。Fine particle separation is achieved by means of a second hydrocyclone stage with cut point of 20 to 35 m. As in the previous stage a dewatering sc
14、reen reduces the water content of the separated material before being discharged onto a collecting conveyor belt (not included in the scope). The overflow is finally discharged to bentonite holding tanks for subsequent slurry feed to the TBM.Fine particle separation HK 125细颗粒渣料的分离- HK 125Solids Disc
15、harge from the hydrocyclones从水力旋分器分离出来的固体渣料1.1.6淤泥和粘土的分离淤泥和粘土的分离1.1.6Silt and clay separation 根据泥土的性质，非常细的渣粒可能累积Dependent upon the properties of the soil, 在悬浮液中，逐渐增加了悬浮液的密度，从而影响其质量。当泥水密度达到警戒水平时，就需要更换部分使用过的悬浮液，从而保证泥水密度保持在适当水平。very fine particles may be accumulated in the suspension affecting the qual
16、ity by slowly increasing the density. Once slurry density reaches a critical level, some of the used suspension needs to be replaced in order to maintain the slurry density at the desired level.未经泥水分离操作的悬浮液被转入到存储池内，然后输到离心机中。离心机的主要原理是在一个旋转筒体中沉淀固体物质。高速旋转使固体物质加速。沉淀物被一个称作涡管的螺旋输送设备收集起来，然后排放出去。Used suspension is transferred to a holding tank feeding a centrifuge plant. The key principle of a centrifuge is sedimentation of solids on the inside of a rotating bowl. High speed rotation le
