搞(Gao)工(Gong)程(Cheng)的(De)都(Du)知(Zhi)道(Dao),(?)在(Zai)泵(Beng)送(Song)混(Hun)凝(Ning)土(Tu)的(De)过(Guo)程(Cheng)中(Zhong)都(Du)不(Bu)可(Ke)避(Bi)免(Mian)的(De)会(Hui)出(Chu)现(Xian)堵(Du)管(Guan)现(Xian)象(Xiang)。(?)混(Hun)凝(Ning)土(Tu)输(Shu)送(Song)泵(Beng)在(Zai)方(Fang)便(Bian)大(Da)家(Jia),(?)节(Jie)约(Yue)成(Cheng)本(Ben)的(De)同(Tong)时(Shi),(?)也(Ye)带(Dai)去(Qu)了(Liao)很(Hen)多(Duo)烦(Fan)恼(Nao),(?)实(Shi)在(Zai)是(Shi)让(Rang)人(Ren)又(You)爱(Ai)又(You)恨(Hen)。(?)其(Qi)实(Shi),(?)这(Zhe)些(Xie)都(Du)是(Shi)可(Ke)以(Yi)避(Bi)免(Mian)的(De),(?)只(Zhi)要(Yao)按(An)规(Gui)范(Fan)操(Cao)作(Zuo),(?)一(Yi)般(Ban)是(Shi)不(Bu)会(Hui)出(Chu)现(Xian)堵(Du)管(Guan)的(De)。(?)那(Na)么(Me),(?)到(Dao)底(Di)堵(Du)管(Guan)是(Shi)怎(Zen)么(Me)发(Fa)生(Sheng)的(De),(?)又(You)有(You)哪(Na)些(Xie)方(Fang)式(Shi)可(Ke)以(Yi)避(Bi)免(Mian)堵(Du)管(Guan)呢(Ne)?(?)赶(Gan)紧(Jin)看(Kan)看(Kan)吧(Ba)!(?)
操(Cao)作(Zuo)不(Bu)当(Dang)容(Rong)易(Yi)造(Zao)成(Cheng)堵(Du)管(Guan)
(1)操(Cao)作(Zuo)人(Ren)员(Yuan)精(Jing)力(Li)不(Bu)集(Ji)中(Zhong)
输(Shu)送(Song)泵(Beng)操(Cao)作(Zuo)人(Ren)员(Yuan)在(Zai)泵(Beng)送(Song)施(Shi)工(Gong)中(Zhong)应(Ying)精(Jing)力(Li)集(Ji)中(Zhong),(?)时(Shi)刻(Ke)注(Zhu)意(Yi)泵(Beng)送(Song)压(Ya)力(Li)表(Biao)的(De)读(Du)数(Shu),(?)一(Yi)旦(Dan)发(Fa)现(Xian)压(Ya)力(Li)表(Biao)读(Du)数(Shu)突(Tu)然(Ran)增(Zeng)大(Da),(?)应(Ying)立(Li)即(Ji)反(Fan)泵(Beng)2-3个(Ge)行(Xing)程(Cheng),(?)再(Zai)正(Zheng)泵(Beng),(?)堵(Du)管(Guan)即(Ji)可(Ke)排(Pai)除(Chu)。(?)若(Ruo)已(Yi)经(Jing)进(Jin)行(Xing)了(Liao)反(Fan)泵(Beng)(正(Zheng)泵(Beng)几(Ji)个(Ge)操(Cao)作(Zuo)循(Xun)环(Huan),(?)仍(Reng)未(Wei)排(Pai)除(Chu)堵(Du)管(Guan),(?)应(Ying)及(Ji)时(Shi)拆(Chai)管(Guan)清(Qing)洗(Xi),(?)否(Fou)则(Ze)将(Jiang)使(Shi)堵(Du)管(Guan)更(Geng)加(Jia)严(Yan)重(Zhong)。(?)
(2)泵(Beng)送(Song)速(Su)度(Du)选(Xuan)择(Ze)不(Bu)当(Dang)
泵(Beng)送(Song)时(Shi),(?)速(Su)度(Du)的(De)选(Xuan)择(Ze)很(Hen)关(Guan)键(Jian),(?)操(Cao)作(Zuo)人(Ren)员(Yuan)不(Bu)能(Neng)一(Yi)味(Wei)地(Di)图(Tu)快(Kuai),(?)有(You)时(Shi)欲(Yu)速(Su)则(Ze)不(Bu)达(Da)。(?)首(Shou)次(Ci)泵(Beng)送(Song)时(Shi),(?)由(You)于(Yu)管(Guan)道(Dao)阻(Zu)力(Li)较(Jiao)大(Da),(?)此(Ci)时(Shi)应(Ying)低(Di)速(Su)泵(Beng)送(Song),(?)泵(Beng)送(Song)正(Zheng)常(Chang)后(Hou),(?)可(Ke)适(Shi)当(Dang)提(Ti)高(Gao)泵(Beng)送(Song)速(Su)度(Du)。(?)当(Dang)出(Chu)现(Xian)堵(Du)管(Guan)征(Zheng)兆(Zhao)或(Huo)某(Mou)一(Yi)车(Che)混(Hun)凝(Ning)土(Tu)的(De)坍(Tan)落(Luo)度(Du)较(Jiao)小(Xiao)时(Shi),(?)应(Ying)低(Di)速(Su)泵(Beng)送(Song),(?)将(Jiang)堵(Du)管(Guan)消(Xiao)灭(Mie)在(Zai)萌(Meng)芽(Ya)状(Zhuang)态(Tai)。(?)
(3)余(Yu)料(Liao)量(Liang)控(Kong)制(Zhi)不(Bu)适(Shi)当(Dang)
泵(Beng)送(Song)时(Shi),(?)操(Cao)作(Zuo)人(Ren)员(Yuan)须(Xu)随(Sui)时(Shi)观(Guan)察(Cha)料(Liao)斗(Dou)中(Zhong)的(De)余(Yu)料(Liao),(?)余(Yu)料(Liao)不(Bu)得(De)低(Di)于(Yu)搅(Jiao)拌(Ban)轴(Zhou),(?)如(Ru)果(Guo)余(Yu)料(Liao)太(Tai)少(Shao),(?)极(Ji)易(Yi)吸(Xi)入(Ru)空(Kong)气(Qi),(?)导(Dao)致(Zhi)堵(Du)管(Guan)。(?)料(Liao)斗(Dou)中(Zhong)的(De)料(Liao)也(Ye)不(Bu)能(Neng)堆(Dui)得(De)太(Tai)多(Duo),(?)应(Ying)低(Di)于(Yu)防(Fang)护(Hu)栏(Lan),(?)以(Yi)便(Bian)于(Yu)及(Ji)时(Shi)清(Qing)理(Li)粗(Cu)骨(Gu)料(Liao)和(He)超(Chao)大(Da)骨(Gu)料(Liao)。(?)当(Dang)某(Mou)一(Yi)车(Che)混(Hun)凝(Ning)土(Tu)的(De)坍(Tan)落(Luo)度(Du)较(Jiao)小(Xiao)时(Shi),(?)余(Yu)料(Liao)可(Ke)低(Di)于(Yu)搅(Jiao)拌(Ban)轴(Zhou),(?)控(Kong)制(Zhi)在(Zai)“(?)S”(?)管(Guan)或(Huo)吸(Xi)入(Ru)口(Kou)以(Yi)上(Shang),(?)以(Yi)减(Jian)小(Xiao)搅(Jiao)拌(Ban)阻(Zu)力(Li)、(?)摆(Bai)动(Dong)阻(Zu)力(Li)和(He)吸(Xi)入(Ru)阻(Zu)力(Li)。(?)本(Ben)办(Ban)法(Fa)仅(Jin)适(Shi)用(Yong)于(Yu)“(?)S”(?)阀(Fa)系(Xi)列(Lie)混(Hun)凝(Ning)土(Tu)泵(Beng)。(?)
(4)混(Hun)凝(Ning)土(Tu)的(De)坍(Tan)落(Luo)度(Du)过(Guo)小(Xiao)时(Shi)采(Cai)取(Qu)措(Cuo)施(Shi)不(Bu)当(Dang)
当(Dang)发(Fa)现(Xian)有(You)一(Yi)斗(Dou)混(Hun)凝(Ning)土(Tu)的(De)坍(Tan)落(Luo)度(Du)很(Hen)小(Xiao),(?)无(Wu)法(Fa)泵(Beng)送(Song)时(Shi),(?)应(Ying)及(Ji)时(Shi)将(Jiang)混(Hun)凝(Ning)土(Tu)从(Cong)料(Liao)斗(Dou)底(Di)部(Bu)放(Fang)掉(Diao),(?)若(Ruo)贪(Tan)图(Tu)省(Sheng)事(Shi),(?)强(Qiang)行(Xing)泵(Beng)送(Song)极(Ji)易(Yi)造(Zao)成(Cheng)堵(Du)管(Guan)。(?)切(Qie)忌(Ji)在(Zai)料(Liao)斗(Dou)中(Zhong)加(Jia)水(Shui)搅(Jiao)拌(Ban)。(?)
(5)停(Ting)机(Ji)时(Shi)间(Jian)过(Guo)长(Chang)
停(Ting)机(Ji)期(Qi)间(Jian),(?)应(Ying)每(Mei)隔(Ge)5-10min(具(Ju)体(Ti)时(Shi)间(Jian)视(Shi)当(Dang)日(Ri)气(Qi)温(Wen)、(?)混(Hun)凝(Ning)土(Tu)坍(Tan)落(Luo)度(Du)、(?)混(Hun)凝(Ning)土(Tu)初(Chu)凝(Ning)时(Shi)间(Jian)而(?)定(Ding))开(Kai)泵(Beng)一(Yi)次(Ci),(?)以(Yi)防(Fang)堵(Du)管(Guan)。(?)对(Dui)于(Yu)停(Ting)机(Ji)时(Shi)间(Jian)过(Guo)长(Chang),(?)已(Yi)初(Chu)凝(Ning)的(De)混(Hun)凝(Ning)土(Tu),(?)不(Bu)宜(Yi)继(Ji)续(Xu)泵(Beng)送(Song)。(?)
(6)管(Guan)道(Dao)未(Wei)清(Qing)洗(Xi)干(Gan)净(Jing)
次(Ci)泵(Beng)送(Song)完(Wan)毕(Bi),(?)管(Guan)道(Dao)未(Wei)清(Qing)洗(Xi)干(Gan)净(Jing),(?)会(Hui)造(Zao)成(Cheng)下(Xia)一(Yi)次(Ci)泵(Beng)送(Song)时(Shi)堵(Du)管(Guan)。(?)所(Suo)以(Yi)每(Mei)次(Ci)泵(Beng)送(Song)完(Wan)毕(Bi)一(Yi)定(Ding)要(Yao)按(An)照(Zhao)操(Cao)作(Zuo)规(Gui)程(Cheng)将(Jiang)输(Shu)送(Song)管(Guan)道(Dao)清(Qing)洗(Xi)干(Gan)净(Jing)。(?)
管(Guan)道(Dao)连(Lian)接(Jie)原(Yuan)因(Yin)导(Dao)致(Zhi)的(De)堵(Du)管(Guan)
(1)道(Dao)布(Bu)置(Zhi)时(Shi)应(Ying)按(An)最(Zui)短(Duan)距(Ju)离(Li)、(?)最(Zui)少(Shao)弯(Wan)头(Tou)和(He)最(Zui)大(Da)弯(Wan)头(Tou)来(Lai)布(Bu)管(Guan),(?)尽(Jin)量(Liang)减(Jian)小(Xiao)输(Shu)送(Song)阻(Zu)力(Li),(?)也(Ye)就(Jiu)减(Jian)少(Shao)了(Liao)堵(Du)管(Guan)的(De)可(Ke)能(Neng)性(Xing)。(?)
(2)出(Chu)口(Kou)锥(Zhui)管(Guan)处(Chu),(?)不(Bu)许(Xu)直(Zhi)接(Jie)接(Jie)弯(Wan)管(Guan),(?)至(Zhi)少(Shao)应(Ying)接(Jie)入(Ru)5mm以(Yi)上(Shang)直(Zhi)管(Guan)后(Hou),(?)再(Zai)接(Jie)弯(Wan)管(Guan)。(?)
(3)途(Tu)接(Jie)管(Guan)时(Shi),(?)每(Mei)次(Ci)只(Zhi)能(Neng)加(Jia)接(Jie)一(Yi)根(Gen),(?)且(Qie)应(Ying)用(Yong)水(Shui)润(Run)滑(Hua)一(Yi)下(Xia)管(Guan)道(Dao)内(Nei)壁(Bi),(?)并(Bing)排(Pai)尽(Jin)空(Kong)气(Qi),(?)否(Fou)则(Ze)极(Ji)易(Yi)造(Zao)成(Cheng)堵(Du)管(Guan)。(?)
(4)向(Xiang)下(Xia)的(De)管(Guan)路(Lu),(?)出(Chu)口(Kou)处(Chu)应(Ying)装(Zhuang)设(She)防(Fang)离(Li)析(Xi)装(Zhuang)置(Zhi),(?)预(Yu)防(Fang)堵(Du)管(Guan)。(?)
(5)泵(Beng)送(Song)时(Shi),(?)水(Shui)平(Ping)管(Guan)路(Lu)的(De)长(Chang)度(Du)一(Yi)般(Ban)应(Ying)不(Bu)小(Xiao)于(Yu)垂(Chui)直(Zhi)管(Guan)路(Lu)长(Chang)度(Du)的(De)15%,(?)且(Qie)应(Ying)在(Zai)水(Shui)平(Ping)管(Guan)路(Lu)中(Zhong)接(Jie)入(Ru)管(Guan)路(Lu)截(Jie)止(Zhi)阀(Fa)。(?)停(Ting)机(Ji)时(Shi)间(Jian)超(Chao)过(Guo)5min时(Shi),(?)应(Ying)关(Guan)闭(Bi)截(Jie)止(Zhi)阀(Fa),(?)防(Fang)止(Zhi)混(Hun)凝(Ning)土(Tu)倒(Dao)流(Liu),(?)导(Dao)致(Zhi)堵(Du)管(Guan)。(?)由(You)水(Shui)平(Ping)转(Zhuan)垂(Chui)直(Zhi)时(Shi)的(De)90度(Du)弯(Wan)管(Guan),(?)弯(Wan)曲(Qu)半(Ban)径(Jing)应(Ying)大(Da)于(Yu)500mm。(?)
混(Hun)凝(Ning)土(Tu)或(Huo)砂(Sha)浆(Jiang)的(De)离(Li)析(Xi)导(Dao)致(Zhi)的(De)堵(Du)管(Guan)
混(Hun)凝(Ning)土(Tu)或(Huo)砂(Sha)浆(Jiang)遇(Yu)水(Shui)时(Shi),(?)极(Ji)易(Yi)造(Zao)成(Cheng)离(Li)析(Xi)。(?)有(You)时(Shi)在(Zai)泵(Beng)送(Song)砂(Sha)浆(Jiang)时(Shi),(?)便(Bian)发(Fa)生(Sheng)堵(Du)管(Guan)现(Xian)象(Xiang),(?)就(Jiu)是(Shi)因(Yin)为(Wei)砂(Sha)浆(Jiang)与(Yu)管(Guan)道(Dao)中(Zhong)的(De)水(Shui)直(Zhi)接(Jie)接(Jie)触(Chu)后(Hou),(?)砂(Sha)浆(Jiang)离(Li)析(Xi)而(?)引(Yin)起(Qi)的(De),(?)预(Yu)防(Fang)办(Ban)法(Fa)是(Shi):(?)
泵(Beng)前(Qian)用(Yong)水(Shui)湿(Shi)润(Run)管(Guan)道(Dao)后(Hou),(?)从(Cong)管(Guan)道(Dao)的(De)最(Zui)低(Di)点(Dian)将(Jiang)管(Guan)道(Dao)接(Jie)头(Tou)松(Song)开(Kai),(?)将(Jiang)余(Yu)水(Shui)全(Quan)部(Bu)放(Fang)掉(Diao),(?)或(Huo)者(Zhe)在(Zai)泵(Beng)水(Shui)之(Zhi)后(Hou),(?)泵(Beng)送(Song)砂(Sha)浆(Jiang)之(Zhi)前(Qian),(?)放(Fang)入(Ru)一(Yi)海(Hai)绵(Mian)球(Qiu),(?)将(Jiang)砂(Sha)浆(Jiang)与(Yu)水(Shui)分(Fen)开(Kai)。(?)
泵(Beng)送(Song)完(Wan)毕(Bi)清(Qing)洗(Xi)管(Guan)道(Dao)时(Shi),(?)也(Ye)要(Yao)放(Fang)入(Ru)一(Yi)海(Hai)绵(Mian)球(Qiu),(?)将(Jiang)水(Shui)与(Yu)混(Hun)凝(Ning)土(Tu)分(Fen)开(Kai),(?)否(Fou)则(Ze)极(Ji)易(Yi)造(Zao)成(Cheng)堵(Du)管(Guan)。(?)
局(Ju)部(Bu)漏(Lou)浆(Jiang)造(Zao)成(Cheng)的(De)堵(Du)管(Guan)
由(You)于(Yu)砂(Sha)浆(Jiang)泄(Xie)漏(Lou)掉(Diao),(?)一(Yi)方(Fang)面(Mian)影(Ying)响(Xiang)混(Hun)凝(Ning)土(Tu)的(De)质(Zhi)量(Liang),(?)另(Ling)一(Yi)方(Fang)面(Mian)漏(Lou)浆(Jiang)后(Hou),(?)将(Jiang)导(Dao)致(Zhi)混(Hun)凝(Ning)土(Tu)的(De)坍(Tan)落(Luo)度(Du)减(Jian)小(Xiao)和(He)泵(Beng)送(Song)压(Ya)力(Li)的(De)损(Sun)失(Shi),(?)从(Cong)而(?)导(Dao)致(Zhi)堵(Du)管(Guan)。(?)漏(Lou)浆(Jiang)的(De)原(Yuan)因(Yin)主(Zhu)要(Yao)有(You)以(Yi)下(Xia)几(Ji)种(Zhong):(?)
(1)输(Shu)送(Song)管(Guan)道(Dao)接(Jie)头(Tou)密(Mi)封(Feng)不(Bu)严(Yan)
输(Shu)送(Song)管(Guan)道(Dao)接(Jie)头(Tou)密(Mi)封(Feng)不(Bu)严(Yan),(?)管(Guan)卡(Ka)松(Song)动(Dong)或(Huo)密(Mi)封(Feng)圈(Quan)损(Sun)坏(Huai)而(?)漏(Lou)浆(Jiang)。(?)此(Ci)时(Shi)应(Ying)紧(Jin)固(Gu)管(Guan)卡(Ka)或(Huo)更(Geng)换(Huan)密(Mi)封(Feng)圈(Quan)。(?)
(2)眼(Yan)镜(Jing)板(Ban)和(He)切(Qie)割(Ge)环(Huan)之(Zhi)间(Jian)的(De)间(Jian)隙(Xi)过(Guo)大(Da)
眼(Yan)镜(Jing)板(Ban)和(He)切(Qie)割(Ge)环(Huan)磨(Mo)损(Sun)严(Yan)重(Zhong)时(Shi),(?)二(?)者(Zhe)之(Zhi)间(Jian)的(De)间(Jian)隙(Xi)变(Bian)大(Da)。(?)须(Xu)通(Tong)过(Guo)调(Diao)整(Zheng)异(Yi)形(Xing)螺(Luo)栓(Shuan)来(Lai)缩(Suo)小(Xiao)眼(Yan)镜(Jing)板(Ban)和(He)切(Qie)割(Ge)环(Huan)之(Zhi)间(Jian)的(De)间(Jian)隙(Xi),(?)若(Ruo)已(Yi)无(Wu)法(Fa)调(Diao)整(Zheng),(?)应(Ying)立(Li)即(Ji)更(Geng)换(Huan)磨(Mo)损(Sun)件(Jian)。(?)本(Ben)办(Ban)法(Fa)仅(Jin)适(Shi)用(Yong)于(Yu)“(?)S”(?)阀(Fa)系(Xi)列(Lie)混(Hun)凝(Ning)土(Tu)泵(Beng)。(?)
(3)混(Hun)凝(Ning)土(Tu)活(Huo)塞(Sai)磨(Mo)损(Sun)严(Yan)重(Zhong)
操(Cao)作(Zuo)人(Ren)员(Yuan)应(Ying)经(Jing)常(Chang)观(Guan)察(Cha)水(Shui)箱(Xiang)中(Zhong)的(De)水(Shui)是(Shi)否(Fou)浑(Hun)浊(Zhuo),(?)有(You)无(Wu)砂(Sha)浆(Jiang),(?)一(Yi)旦(Dan)发(Fa)现(Xian)水(Shui)已(Yi)浑(Hun)浊(Zhuo)或(Huo)水(Shui)中(Zhong)有(You)砂(Sha)浆(Jiang),(?)表(Biao)明(Ming)混(Hun)凝(Ning)土(Tu)活(Huo)塞(Sai)已(Yi)经(Jing)磨(Mo)损(Sun),(?)此(Ci)时(Shi)应(Ying)及(Ji)时(Shi)更(Geng)换(Huan)活(Huo)塞(Sai),(?)否(Fou)则(Ze)将(Jiang)因(Yin)漏(Lou)浆(Jiang)和(He)压(Ya)力(Li)损(Sun)失(Shi)而(?)导(Dao)致(Zhi)堵(Du)管(Guan),(?)同(Tong)时(Shi)还(Huan)会(Hui)加(Jia)剧(Ju)活(Huo)塞(Sai)和(He)输(Shu)送(Song)缸(Gang)的(De)磨(Mo)损(Sun)。(?)
(4)因(Yin)混(Hun)凝(Ning)土(Tu)输(Shu)送(Song)缸(Gang)严(Yan)重(Zhong)磨(Mo)损(Sun)而(?)引(Yin)起(Qi)的(De)漏(Lou)浆(Jiang)
若(Ruo)每(Mei)次(Ci)更(Geng)换(Huan)活(Huo)塞(Sai)后(Hou),(?)水(Shui)箱(Xiang)中(Zhong)的(De)水(Shui)很(Hen)快(Kuai)就(Jiu)变(Bian)浑(Hun)浊(Zhuo),(?)而(?)活(Huo)塞(Sai)是(Shi)好(Hao)的(De),(?)则(Ze)表(Biao)明(Ming)输(Shu)送(Song)缸(Gang)已(Yi)磨(Mo)损(Sun),(?)此(Ci)时(Shi)需(Xu)更(Geng)换(Huan)输(Shu)送(Song)缸(Gang)。(?)
不(Bu)合(He)格(Ge)的(De)泵(Beng)送(Song)混(Hun)凝(Ning)土(Tu)导(Dao)致(Zhi)的(De)堵(Du)管(Guan)
用(Yong)于(Yu)泵(Beng)送(Song)的(De)混(Hun)凝(Ning)土(Tu)必(Bi)须(Xu)符(Fu)合(He)泵(Beng)送(Song)混(Hun)凝(Ning)土(Tu)的(De)要(Yao)求(Qiu),(?)并(Bing)不(Bu)是(Shi)所(Suo)有(You)的(De)混(Hun)凝(Ning)土(Tu)都(Du)可(Ke)以(Yi)拿(Na)来(Lai)泵(Beng)送(Song),(?)非(Fei)合(He)格(Ge)的(De)泵(Beng)送(Song)混(Hun)凝(Ning)土(Tu)将(Jiang)加(Jia)剧(Ju)泵(Beng)机(Ji)的(De)磨(Mo)损(Sun),(?)并(Bing)经(Jing)常(Chang)出(Chu)现(Xian)堵(Du)管(Guan)、(?)爆(Bao)管(Guan)等(Deng)现(Xian)象(Xiang)。(?)
(1)混(Hun)凝(Ning)土(Tu)坍(Tan)落(Luo)度(Du)过(Guo)大(Da)或(Huo)过(Guo)小(Xiao)
混(Hun)凝(Ning)土(Tu)坍(Tan)落(Luo)度(Du)的(De)大(Da)小(Xiao)直(Zhi)接(Jie)反(Fan)映(Ying)了(Liao)混(Hun)凝(Ning)土(Tu)流(Liu)动(Dong)性(Xing)的(De)好(Hao)坏(Huai),(?)混(Hun)凝(Ning)土(Tu)的(De)输(Shu)送(Song)阻(Zu)力(Li)随(Sui)着(Zhuo)坍(Tan)落(Luo)度(Du)的(De)增(Zeng)加(Jia)而(?)减(Jian)小(Xiao)。(?)泵(Beng)送(Song)混(Hun)凝(Ning)土(Tu)的(De)坍(Tan)落(Luo)度(Du)一(Yi)般(Ban)在(Zai)8~(?)18cm范(Fan)围(Wei)内(Nei),(?)对(Dui)于(Yu)长(Chang)距(Ju)离(Li)和(He)大(Da)高(Gao)度(Du)的(De)泵(Beng)送(Song)一(Yi)般(Ban)需(Xu)严(Yan)格(Ge)控(Kong)制(Zhi)在(Zai)15cm左(Zuo)右(You)。(?)坍(Tan)落(Luo)度(Du)过(Guo)小(Xiao),(?)会(Hui)增(Zeng)大(Da)输(Shu)送(Song)压(Ya)力(Li),(?)加(Jia)剧(Ju)设(She)备(Bei)磨(Mo)损(Sun),(?)并(Bing)导(Dao)致(Zhi)堵(Du)管(Guan)。(?)坍(Tan)落(Luo)度(Du)过(Guo)大(Da),(?)高(Gao)压(Ya)下(Xia)混(Hun)凝(Ning)土(Tu)易(Yi)离(Li)析(Xi)而(?)造(Zao)成(Cheng)堵(Du)管(Guan)。(?)
(2)含(Han)砂(Sha)率(Lu)过(Guo)小(Xiao)、(?)粗(Cu)骨(Gu)料(Liao)级(Ji)配(Pei)不(Bu)合(He)理(Li)
按(An)来(Lai)源(Yuan)可(Ke)分(Fen)为(Wei):(?)河(He)砂(Sha)、(?)人(Ren)工(Gong)砂(Sha)(即(Ji)机(Ji)制(Zhi)砂(Sha))、(?)海(Hai)砂(Sha)、(?)山(Shan)砂(Sha),(?)其(Qi)中(Zhong)河(He)砂(Sha)的(De)可(Ke)泵(Beng)性(Xing)最(Zui)好(Hao),(?)机(Ji)制(Zhi)砂(Sha)的(De)可(Ke)泵(Beng)性(Xing)最(Zui)差(Cha)。(?)细(Xi)骨(Gu)料(Liao)按(An)粒(Li)径(Jing)可(Ke)分(Fen)为(Wei):(?)粗(Cu)砂(Sha)、(?)中(Zhong)砂(Sha)、(?)细(Xi)砂(Sha),(?)其(Qi)中(Zhong)中(Zhong)砂(Sha)的(De)可(Ke)泵(Beng)性(Xing)最(Zui)好(Hao)。(?)
料(Liao)按(An)形(Xing)状(Zhuang)可(Ke)分(Fen)为(Wei):(?)卵(Luan)石(Shi)、(?)碎(Sui)石(Shi)。(?)卵(Luan)石(Shi)的(De)可(Ke)泵(Beng)性(Xing)好(Hao)于(Yu)碎(Sui)石(Shi)。(?)骨(Gu)料(Liao)的(De)最(Zui)大(Da)粒(Li)径(Jing)与(Yu)输(Shu)送(Song)管(Guan)道(Dao)的(De)最(Zui)小(Xiao)口(Kou)径(Jing)也(Ye)有(You)关(Guan)系(Xi),(?)卵(Luan)石(Shi)的(De)最(Zui)大(Da)粒(Li)径(Jing)应(Ying)小(Xiao)于(Yu)1/3口(Kou)径(Jing),(?)碎(Sui)石(Shi)的(De)最(Zui)大(Da)粒(Li)径(Jing)应(Ying)小(Xiao)于(Yu)1/4口(Kou)径(Jing),(?)否(Fou)则(Ze)也(Ye)易(Yi)引(Yin)起(Qi)堵(Du)管(Guan)。(?)
于(Yu)材(Cai)料(Liao)的(De)不(Bu)同(Tong),(?)细(Xi)骨(Gu)料(Liao)的(De)含(Han)量(Liang)(即(Ji)含(Han)砂(Sha)率(Lu))、(?)粗(Cu)骨(Gu)料(Liao)的(De)级(Ji)配(Pei)都(Du)存(Cun)在(Zai)一(Yi)个(Ge)最(Zui)佳(Jia)值(Zhi)。(?)通(Tong)常(Chang)情(Qing)况(Kuang)下(Xia),(?)含(Han)砂(Sha)率(Lu)不(Bu)宜(Yi)太(Tai)低(Di),(?)应(Ying)大(Da)于(Yu)40%,(?)大(Da)粒(Li)径(Jing)粗(Cu)骨(Gu)料(Liao)的(De)含(Han)量(Liang)不(Bu)宜(Yi)过(Guo)高(Gao)。(?)合(He)理(Li)地(Di)选(Xuan)择(Ze)含(Han)砂(Sha)率(Lu)和(He)确(Que)定(Ding)骨(Gu)料(Liao)级(Ji)配(Pei),(?)对(Dui)提(Ti)高(Gao)混(Hun)凝(Ning)土(Tu)的(De)泵(Beng)送(Song)性(Xing)能(Neng)和(He)预(Yu)防(Fang)堵(Du)管(Guan)至(Zhi)关(Guan)重(Zhong)要(Yao)。(?)
(3)水(Shui)泥(Ni)用(Yong)量(Liang)过(Guo)少(Shao)或(Huo)过(Guo)多(Duo)
水(Shui)泥(Ni)在(Zai)泵(Beng)送(Song)混(Hun)凝(Ning)土(Tu)中(Zhong),(?)起(Qi)胶(Jiao)结(Jie)作(Zuo)用(Yong)和(He)润(Run)滑(Hua)作(Zuo)用(Yong),(?)同(Tong)时(Shi)水(Shui)泥(Ni)具(Ju)有(You)良(Liang)好(Hao)的(De)保(Bao)水(Shui)性(Xing)能(Neng),(?)使(Shi)混(Hun)凝(Ning)土(Tu)在(Zai)泵(Beng)送(Song)过(Guo)程(Cheng)中(Zhong)不(Bu)易(Yi)泌(Mi)水(Shui),(?)水(Shui)泥(Ni)的(De)用(Yong)量(Liang)也(Ye)存(Cun)在(Zai)一(Yi)个(Ge)最(Zui)佳(Jia)值(Zhi),(?)若(Ruo)水(Shui)泥(Ni)用(Yong)量(Liang)过(Guo)少(Shao),(?)将(Jiang)严(Yan)重(Zhong)影(Ying)响(Xiang)混(Hun)凝(Ning)土(Tu)的(De)吸(Xi)入(Ru)性(Xing)能(Neng),(?)同(Tong)时(Shi)使(Shi)泵(Beng)送(Song)阻(Zu)力(Li)增(Zeng)加(Jia),(?)混(Hun)凝(Ning)土(Tu)的(De)保(Bao)水(Shui)性(Xing)变(Bian)差(Cha),(?)容(Rong)易(Yi)泌(Mi)水(Shui)、(?)离(Li)析(Xi)和(He)发(Fa)生(Sheng)堵(Du)管(Guan)。(?)一(Yi)般(Ban)情(Qing)况(Kuang)下(Xia)每(Mei)立(Li)方(Fang)米(Mi)混(Hun)凝(Ning)土(Tu)中(Zhong)水(Shui)泥(Ni)的(De)含(Han)量(Liang)应(Ying)大(Da)于(Yu)320Kg,(?)但(Dan)也(Ye)不(Bu)能(Neng)过(Guo)大(Da),(?)水(Shui)泥(Ni)用(Yong)量(Liang)过(Guo)大(Da),(?)将(Jiang)会(Hui)增(Zeng)加(Jia)混(Hun)凝(Ning)土(Tu)的(De)粘(Zhan)性(Xing),(?)从(Cong)而(?)造(Zao)成(Cheng)输(Shu)送(Song)阻(Zu)力(Li)的(De)增(Zeng)加(Jia)。(?)
另(Ling)外(Wai)水(Shui)泥(Ni)用(Yong)量(Liang)与(Yu)骨(Gu)料(Liao)的(De)形(Xing)状(Zhuang)也(Ye)有(You)关(Guan)系(Xi),(?)骨(Gu)料(Liao)的(De)表(Biao)面(Mian)积(Ji)越(Yue)大(Da),(?)需(Xu)要(Yao)包(Bao)裹(Guo)的(De)水(Shui)泥(Ni)浆(Jiang)也(Ye)应(Ying)该(Gai)越(Yue)多(Duo),(?)相(Xiang)应(Ying)地(Di)水(Shui)泥(Ni)的(De)含(Han)量(Liang)就(Jiu)越(Yue)大(Da)。(?)因(Yin)此(Ci),(?)合(He)理(Li)地(Di)确(Que)定(Ding)水(Shui)泥(Ni)的(De)用(Yong)量(Liang),(?)对(Dui)提(Ti)高(Gao)混(Hun)凝(Ning)土(Tu)的(De)可(Ke)泵(Beng)性(Xing),(?)预(Yu)防(Fang)堵(Du)管(Guan)也(Ye)很(Hen)重(Zhong)要(Yao)。(?)
(4)外(Wai)加(Jia)剂(Ji)的(De)选(Xuan)用(Yong)不(Bu)合(He)理(Li)
外(Wai)加(Jia)剂(Ji)的(De)种(Zhong)类(Lei)很(Hen)多(Duo),(?)如(Ru):(?)加(Jia)气(Qi)剂(Ji)、(?)减(Jian)水(Shui)剂(Ji)、(?)超(Chao)塑(Su)化(Hua)剂(Ji)、(?)缓(Huan)凝(Ning)剂(Ji)、(?)泵(Beng)送(Song)剂(Ji)等(Deng),(?)根(Gen)据(Ju)混(Hun)凝(Ning)土(Tu)的(De)强(Qiang)度(Du)要(Yao)求(Qiu)和(He)水(Shui)泥(Ni)的(De)品(Pin)种(Zhong),(?)合(He)理(Li)地(Di)选(Xuan)择(Ze)外(Wai)加(Jia)剂(Ji),(?)对(Dui)提(Ti)高(Gao)混(Hun)凝(Ning)土(Tu)的(De)泵(Beng)送(Song)性(Xing)能(Neng)起(Qi)到(Dao)很(Hen)重(Zhong)要(Yao)的(De)作(Zuo)用(Yong)。(?)不(Bu)合(He)理(Li)的(De)外(Wai)加(Jia)剂(Ji)将(Jiang)使(Shi)混(Hun)凝(Ning)土(Tu)的(De)可(Ke)泵(Beng)性(Xing)和(He)流(Liu)动(Dong)性(Xing)变(Bian)差(Cha),(?)从(Cong)而(?)导(Dao)致(Zhi)堵(Du)管(Guan)。(?)
砂(Sha)浆(Jiang)量(Liang)太(Tai)少(Shao)或(Huo)配(Pei)合(He)比(Bi)不(Bu)合(He)格(Ge)导(Dao)致(Zhi)堵(Du)管(Guan)
(1)砂(Sha)浆(Jiang)用(Yong)量(Liang)太(Tai)少(Shao)
因(Yin)为(Wei)首(Shou)次(Ci)泵(Beng)送(Song)时(Shi),(?)搅(Jiao)拌(Ban)主(Zhu)机(Ji)、(?)混(Hun)凝(Ning)土(Tu)输(Shu)送(Song)车(Che)搅(Jiao)拌(Ban)罐(Guan)、(?)料(Liao)斗(Dou)、(?)管(Guan)道(Dao)等(Deng)都(Du)要(Yao)吸(Xi)收(Shou)一(Yi)部(Bu)分(Fen)砂(Sha)浆(Jiang),(?)如(Ru)果(Guo)砂(Sha)浆(Jiang)用(Yong)量(Liang)太(Tai)少(Shao),(?)将(Jiang)导(Dao)致(Zhi)部(Bu)分(Fen)输(Shu)送(Song)管(Guan)道(Dao)没(Mei)有(You)得(De)到(Dao)润(Run)滑(Hua),(?)从(Cong)而(?)导(Dao)致(Zhi)堵(Du)管(Guan)。(?)正(Zheng)确(Que)的(De)砂(Sha)浆(Jiang)用(Yong)量(Liang)应(Ying)按(An)每(Mei)200m 管(Guan)道(Dao)约(Yue)需(Xu)0.5m3砂(Sha)浆(Jiang)计(Ji)算(Suan),(?)搅(Jiao)拌(Ban)主(Zhu)机(Ji)、(?)料(Liao)斗(Dou)、(?)混(Hun)凝(Ning)土(Tu)输(Shu)送(Song)车(Che)搅(Jiao)拌(Ban)罐(Guan)等(Deng)约(Yue)需(Xu)0.2m3左(Zuo)右(You)的(De)砂(Sha)浆(Jiang)。(?)因(Yin)此(Ci)泵(Beng)送(Song)前(Qian)一(Yi)定(Ding)要(Yao)计(Ji)算(Suan)好(Hao)砂(Sha)浆(Jiang)的(De)用(Yong)量(Liang)。(?)砂(Sha)浆(Jiang)太(Tai)少(Shao)易(Yi)堵(Du)管(Guan),(?)砂(Sha)浆(Jiang)太(Tai)多(Duo)将(Jiang)影(Ying)响(Xiang)混(Hun)凝(Ning)土(Tu)的(De)质(Zhi)量(Liang)或(Huo)造(Zao)成(Cheng)不(Bu)必(Bi)要(Yao)的(De)浪(Lang)费(Fei)。(?)
(2)砂(Sha)浆(Jiang)配(Pei)合(He)比(Bi)不(Bu)合(He)格(Ge)
砂(Sha)浆(Jiang)的(De)配(Pei)合(He)比(Bi)也(Ye)很(Hen)关(Guan)键(Jian)。(?)当(Dang)管(Guan)道(Dao)长(Chang)度(Du)低(Di)于(Yu)150m时(Shi),(?)用(Yong)1:(?)2的(De)水(Shui)泥(Ni)砂(Sha)浆(Jiang)(1份(Fen)水(Shui)泥(Ni)/2份(Fen)砂(Sha)浆(Jiang));当(Dang)管(Guan)道(Dao)长(Chang)度(Du)大(Da)于(Yu)150m时(Shi),(?)用(Yong)1:(?)1 的(De)水(Shui)泥(Ni)砂(Sha)浆(Jiang)(1份(Fen)水(Shui)泥(Ni)/1份(Fen)砂(Sha)浆(Jiang)),(?)水(Shui)泥(Ni)用(Yong)量(Liang)太(Tai)少(Shao)也(Ye)会(Hui)造(Zao)成(Cheng)堵(Du)管(Guan)。(?)
气(Qi)温(Wen)变(Bian)化(Hua)导(Dao)致(Zhi)的(De)堵(Du)管(Guan)
夏(Xia)季(Ji)气(Qi)温(Wen)较(Jiao)高(Gao),(?)管(Guan)道(Dao)在(Zai)强(Qiang)烈(Lie)阳(Yang)光(Guang)照(Zhao)射(She)下(Xia),(?)混(Hun)凝(Ning)土(Tu)易(Yi)脱(Tuo)水(Shui),(?)从(Cong)而(?)导(Dao)致(Zhi)堵(Du)管(Guan),(?)因(Yin)此(Ci)在(Zai)管(Guan)道(Dao)上(Shang)应(Ying)加(Jia)盖(Gai)湿(Shi)草(Cao)袋(Dai)或(Huo)其(Qi)他(Ta)降(Jiang)温(Wen)用(Yong)品(Pin)。(?)冬(Dong)季(Ji)应(Ying)采(Cai)取(Qu)保(Bao)温(Wen)措(Cuo)施(Shi),(?)确(Que)保(Bao)混(Hun)凝(Ning)土(Tu)的(De)温(Wen)度(Du)。(?)
总(Zong)结(Jie)
以(Yi)上(Shang)是(Shi)总(Zong)结(Jie)的(De)导(Dao)致(Zhi)堵(Du)管(Guan)的(De)几(Ji)个(Ge)常(Chang)见(Jian)原(Yuan)因(Yin)及(Ji)预(Yu)防(Fang)措(Cuo)施(Shi),(?)在(Zai)实(Shi)际(Ji)生(Sheng)产(Chan)过(Guo)程(Cheng)中(Zhong),(?)由(You)于(Yu)外(Wai)界(Jie)条(Tiao)件(Jian)的(De)变(Bian)化(Hua),(?)造(Zao)成(Cheng)堵(Du)管(Guan)的(De)原(Yuan)因(Yin)往(Wang)往(Wang)不(Bu)止(Zhi)这(Zhe)些(Xie)。(?)但(Dan)只(Zhi)要(Yao)我(Wo)们(Men)严(Yan)格(Ge)按(An)照(Zhao)操(Cao)作(Zuo)规(Gui)程(Cheng)操(Cao)作(Zuo),(?)做(Zuo)到(Dao)防(Fang)微(Wei)杜(Du)渐(Jian),(?)不(Bu)断(Duan)地(Di)从(Cong)每(Mei)一(Yi)次(Ci)堵(Du)管(Guan)中(Zhong)总(Zong)结(Jie)经(Jing)验(Yan)和(He)教(Jiao)训(Xun),(?)就(Jiu)能(Neng)将(Jiang)堵(Du)管(Guan)的(De)可(Ke)能(Neng)性(Xing)降(Jiang)到(Dao)最(Zui)低(Di)。(?)