河道水庫(kù)采沙清淤

河道、水庫(kù)、海里、尾砂庫(kù)采沙-、河道、水庫(kù)、海里、尾沙庫(kù)采沙河道采沙時(shí)，可將小型排沙潛水泵吊入水中抽沙，也可將潛水泥漿泵坐到船上，下接帶底閥濾網(wǎng)的吸水軟管，將底閥濾網(wǎng)放入水中抽沙。韶關(guān)水庫(kù)在清理庫(kù)內(nèi)泥沙時(shí)，采用的是開(kāi)閘放水，用大流量的水流將泥沙帶走。但是由于泥沙太多，水壩的閘門(mén)已經(jīng)被泥沙淤住了，需要先將閘門(mén)附近的泥沙排走，才能將閘門(mén)打開(kāi)。大壩頂部到水面有11米高（采用離心泵吸程不夠），泥沙在水下10米以下（常規(guī)的潛水泵最多允許淹沒(méi)深度4?5米）?，F(xiàn)場(chǎng)復(fù)雜的環(huán)境增加了泥沙清理的難度。韶關(guān)水庫(kù)選用SQ100-22型排沙潛水泵，將泵吊掛安裝，選擇閘門(mén)附近的空隙，放入水中排水抽沙，使問(wèn)題輕松解決。云南大盈江水電站遇到了與韶關(guān)水庫(kù)同樣的問(wèn)題，需要泄洪時(shí)發(fā)現(xiàn)閘門(mén)被泥沙淤住了打不開(kāi)，急需沙泵清理泥沙，其大壩很高，需要水泵的揚(yáng)程比韶關(guān)水庫(kù)更高，最終選購(gòu)了KL100-5037KW潛水泥漿泵，緊急空運(yùn)至昆明，用戶(hù)開(kāi)車(chē)在機(jī)場(chǎng)等，泵到后立刻取回，馬上潛水安裝使用，排沙效果十分理想，最終問(wèn)題圓滿(mǎn)解決，用戶(hù)終于松了口氣。事后，又采購(gòu)潛水泥漿泵作為日常儲(chǔ)備。上述兩個(gè)案例同大多數(shù)河道采沙時(shí)的水泵安裝方式是一樣的，都是潛水安裝，直接將潛水泵吊裝放入水中的泥沙層附近抽沙。這樣使用的優(yōu)點(diǎn)是簡(jiǎn)單、方便，適合于這種臨時(shí)性、小規(guī)模的抽沙工況。這樣使用的缺點(diǎn)是，由于沒(méi)有增加任何攪拌造漿措施，抽沙時(shí)濃度忽高忽低，濃度不穩(wěn)定，泥沙濃度過(guò)高時(shí)容易出現(xiàn)過(guò)載，甚至堵泵，泥沙濃度太低時(shí)抽沙的效率會(huì)不高，遇到泥沙板結(jié)的工況時(shí)抽沙效果會(huì)更差，遇到較稀的泥沙漿時(shí)容易將泵插到泥里造成堵泵，因此這樣使用對(duì)現(xiàn)場(chǎng)的操作人員要求很高。京帝公司南海采沙時(shí)遇到了水深問(wèn)題。海水深30米左右，用放在船上的沙泵抽沙吸不上來(lái)，需要用排沙潛水泵放入水中抽沙。潛水泵的潛水深度是有要求的，不是想放多深就放多深的。作業(yè)面潛水泵一般是干式電機(jī)（油浸電機(jī)和水浸電機(jī)基本被淘汰），其潛水深度標(biāo)準(zhǔn)規(guī)定為5米。如果潛水深度太深，水泵軸端密封受不了，水泵電機(jī)容易進(jìn)水損壞。深井泵潛沒(méi)深度可以很深，但它是長(zhǎng)軸清水泵，一般采用石墨密封、水潤(rùn)滑軸承、巴士合金軸套，只能抽清水，有泥沙時(shí)會(huì)馬上報(bào)廢。所以，能在深水工作的排沙潛水電泵目前市場(chǎng)上根本沒(méi)有。上述兩個(gè)水庫(kù)抽沙的案例中使用的潛水深度最深時(shí)都有10多米，短期臨時(shí)使用，事實(shí)證明可行，但長(zhǎng)期這樣使用，排沙潛水泵的壽命無(wú)法保證。而且，在潛水深度20?

30米處直接使用，更無(wú)法保證排沙潛水泵的使用壽命。為此，在南海采沙的工況，我們將排沙潛水泵增加了氣壓平衡裝置，用向電機(jī)腔內(nèi)增加壓縮空氣的方法來(lái)平衡電機(jī)腔內(nèi)外的壓力差。采用了這種措施后，成功地使得排沙潛水泵潛沒(méi)30米深的水下工作，實(shí)際工作效果比較理想。韓國(guó)沿海采沙同樣遇到了水深問(wèn)題。目前用的采沙船只能采水下20米深的泥沙（下圖為王教授到現(xiàn)場(chǎng)考察），他們需要采40米深的海沙，目前根本找不到這樣的沙泵。采用上述方案可以有效解決這個(gè)問(wèn)題。EOOW/hH=30n7L0k*fikV□Wr/ninEOOW/hH=30n7L0k*fikV□Wr/nin前文所說(shuō)的所有采沙案例都是淺表層采沙，屬于在沙層表面一層一層剝離式的開(kāi)采。尾砂庫(kù)、海底采礦等許多工況都需要進(jìn)行深層次的開(kāi)采，這樣的工況，要求必須保證漿體濃度基本恒定，還要防止沙坑中的潛水泵被塌方埋住。除此之外，對(duì)于水底泥沙板結(jié)很厲害的工況，用上述方法很難將沙吸上來(lái)。

蓄渣水庫(kù)選用KL100-50（即原保險(xiǎn)繩主漿一吸M排水|排水吊掛繩g￥也攬拌?器./燦SQ100-50KL）型保險(xiǎn)繩主漿一吸M排水|排水吊掛繩g￥也攬拌?器./燦柯蛆甸海里吸沙SQ3O02045妙措沙潛水生安弛示柯蛆甸海里吸沙SQ3O02045妙措沙潛水生安弛示意圖四川某公司尾砂庫(kù)抽沙現(xiàn)場(chǎng)作業(yè)圖，吸水管底部配有小型的水利攪拌器。毛里海邊海底抽沙現(xiàn)場(chǎng)作業(yè)圖，泵下端連接水利攪拌器，旁邊鐵框內(nèi)為小型潛水泵，給水利攪拌器供水沖沙。水而用戶(hù)自齋L庠沙管內(nèi)倒水而用戶(hù)自齋L庠沙管內(nèi)倒00嶇宋3.脅用膠曾成塹粗曾內(nèi)檢32虹米'3,清水膠管或蟄籽管內(nèi)程100某未4一清水陶心寒流fiaoi；方米，小時(shí)插程LOC米:rJd開(kāi)采升面「五點(diǎn)-Vr..』舟鬲埸后沙面7山東地礦在印尼海邊采礦選用KL280-3590kW高濃度潛水泥漿泵，該泵將水力攪拌器與沙泵做成一體式，減少了體積，吊裝更方便。滴水用墊科管但水F沙面 排沙用嫂料管曹咨吃柴泵型號(hào)KL3SQ451~-責(zé)童監(jiān)。專(zhuān)方米/小時(shí)屆程瀉米-'肪率如千瓦■■-持沙管在內(nèi)fesroSX

380/660V排沙潛水泵參數(shù)表序號(hào)產(chǎn)品型號(hào)流量Qm3/h揚(yáng)程Hm電機(jī)功率kW電機(jī)轉(zhuǎn)數(shù)Nr/min機(jī)體法蘭外徑mm電機(jī)機(jī)身高度mm最大徑向?qū)挾龋ㄗ?）mm整機(jī)總高度mm出水管內(nèi)徑（注2）mm重量kg1SQ85-75X485200295069012101040204012522002SQ65-75X465300160295069011501040198010020003SQ50-75X450132295069011101040194010018004SQ110-63X4110200295069012101040204012522005SQ85-63X485250160295069011501040198012520006SQ70-63X470132295069011101040194010018007SQ40-63X44090295059591581016157511008SQ140-50X4140200295069012101040204015022009SQ110-50X41102001602950690115010401980125200010SQ85-50X4851322950690111010401940125180011SQ50-50X4509029505959158101615100110012SQ180-80X21802002950690121010401810200200013SQ140-80X21401601602950690115010401750150180014SQ110-80X21101322950690111010401710150160015SQ70-80X270902950595915820148010095016SQ240-63X22402001450760121010802020200230017SQ190-63X21901601450760115010801760150210018SQ150-63X21501251321450760111010801720150190019SQ100-63X2100902950600915820148012592020SQ60-63X260552950540780755125010070021SQ40-63X24037295039084056512907542022SQ300-50X23002001450760121010801820200230023SQ240-50X22401601450760115010801760200210024SQ200-50X22001321450760111010801720200190025SQ130-50X2130100902950600915820148015092026SQ75-50X275552950540780755125012570027SQ50-50X250372950390840565129010042028SQ20-50X22029503906455109355030029SQ400-754002001450765121010801990250250030SQ300-753001601450765115010801900250165031SQ240-752401321450765111010801860200150032SQ180-7518075902950600915820148015092033SQ100-75100552950540780755125012565034SQ70-7570372950390840565129010042035SQ25-752529503906455109355030036SQ12-35X21270295033054840078050120

37SQ400-50400501321450760111010801860250150038SQ280-50280902950600915820156020085039SQ170-50170552950540780755140015065040SQ120-50120372950390840565124012540041SQ90-5090302950390780565118012538042SQ60-5060222950390720565112010032043SQ50-50502950390645510103010027544SQ35-50351529503906055109907524045SQ25-50251129503905755109605021546SQ18-501829502805484007705010047SQ12-5012295026047039066050854849SQ430-35SQ250-35430250359055295029506005409157808207551560140025020085065050SQ160-35160372950390840565124015040051SQ130-35130302950390770565120015038052SQ95-3595222950390720565112012532053SQ80-35802950390645510103010027554SQ60-356015295039060551099010024055SQ45-35451129503905755109607521556SQ28-352829502805484008257510057SQ20-35202950260470390660508558SQ430-2243022551450600780790150025092059SQ340-22340451450560840780145020082060SQ290-22290371450560800780140020075061SQ220-22220301450520770680135020052062SQ150-22150222950390720565112015032063SQ130-221302950390645510104012528564SQ100-2210015295039060551099012524065SQ70-227011295039057551096010021566SQ50-225029502805484008257510067SQ35-22352950260470390770508568SQ25-222542950260450390750506569SQ12-22122950208516208658504270SQ600-1260012451450560840780145030092071SQ300-12300301450520770680145025052072SQ140-12140151450390645510104015040073SQ70-127014503205484208251001307475SQ50-12SQ22-12502214502950280208470516400208825658755012042380/660V清淤排沙立泵參數(shù)表

序號(hào)產(chǎn)品型號(hào)流量Qm3/h揚(yáng)程Hm電機(jī)功率kW電機(jī)轉(zhuǎn)數(shù)nr/min機(jī)體法蘭外徑mm電機(jī)機(jī)身高度mm最大徑向?qū)挾龋ㄗ?）mm整機(jī)總高度mm出水管內(nèi)徑（注2）mm重量kg1KL85-75X485300200295069012101040204012522002KL65-75X465160295069011501040198010020003KL50-75X450132295069011101040194010018004KL110-63X41102502002950690121010402040125220056KL85-63X4KL70-63X4857016013229502950690690115011101040104019801940125100200018007KL40-63X44090295059591581016157511008KL140-50X4140200200295069012101040204015022009KL110-50X41101602950690115010401980125200010KL85-50X4851322950690111010401940125180011KL50-50X4509029505959158101615100110012KL180-80X21801602002950690121010401810200200013KL140-80X21401602950690115010401750150180014KL110-80X21101322950690111010401710150160015KL70-80X270902950595915820148010095016KL240-63X22401252001450760121010802020200230017KL190-63X21901601450760115010801760150210018KL150-63X21501321450760111010801720150190019KL100-63X2100902950600915820148012592020KL60-63X260552950540780755125010070021KL40-63X2403729503908405651290754202223KL300-50X2KL240-50X2300240100200160145014507607601210115010801080182017602002002300210024KL200-50X22001321450760111010801720200190025KL130-50X2130902950600915820148015092026KL75-50X2755529505407807551250125700

27KL50-50X250372950390840565129010042028KL400-75400752001450765121010801990250250029KL300-753001601450765115010801900250165030KL240-752401321450765111010801860200150031KL180-75180902950600915820148015092032KL100-75100552950540780755125012565033KL70-757037295039084056512901004203435KL400-50KL280-50400280501329014502950760600111091510808201860156025020015008503637KL170-50KL120-501701205537295029505403907808407555651400124015