午夜精品一区二区三区免费视频_欧美午夜一区二区福利视频_无码h黄肉3d动漫在线观看_国产丰满美女A级毛片

   旋挖鉆(zhan)(zhan)(zhan)機(ji)的鉆(zhan)(zhan)(zhan)桿是和(he)地面直(zhi)接接觸的，一般(ban)會采取(qu)循環泥漿鉆(zhan)(zhan)(zhan)進(jin)，而鉆(zhan)(zhan)(zhan)渣(zha)經過(guo)旋挖鉆(zhan)(zhan)(zhan)鉆(zhan)(zhan)(zhan)扣的提升帶到高空上(shang)來(lai)進(jin)行卸(xie)渣(zha)，將卸(xie)渣(zha)措施稱之為一連排渣(zha)，工作(zuo)一天下(xia)來(lai)，鉆(zhan)(zhan)(zhan)機(ji)的鉆(zhan)(zhan)(zhan)桿很(hen)粘(zhan)帶著肯多泥沙，咱(zan)們今天主要和(he)大(da)家介紹下(xia)清理鉆(zhan)(zhan)(zhan)桿的方法。
旋挖鉆機實物圖(tu)
   首(shou)先，咱得(de)明白旋挖鉆(zhan)(zhan)(zhan)(zhan)機(ji)鉆(zhan)(zhan)(zhan)(zhan)桿孔(kong)底(di)(di)(di)沉(chen)渣(zha)的(de)(de)緣(yuan)故，一(yi)是旋挖鉆(zhan)(zhan)(zhan)(zhan)斗(dou)(dou)(dou)齒與鉆(zhan)(zhan)(zhan)(zhan)斗(dou)(dou)(dou)底(di)(di)(di)蓋之間殘留，二底(di)(di)(di)蓋關閉不(bu)(bu)嚴，還有鉆(zhan)(zhan)(zhan)(zhan)進泥砂或流(liu)塑(su)性地(di)層時，旋挖鉆(zhan)(zhan)(zhan)(zhan)機(ji)鉆(zhan)(zhan)(zhan)(zhan)進鉆(zhan)(zhan)(zhan)(zhan)斗(dou)(dou)(dou)內(nei)的(de)(de)鉆(zhan)(zhan)(zhan)(zhan)渣(zha)在(zai)提升(sheng)中散失龐大，偶(ou)爾以(yi)致全體散失在(zai)鉆(zhan)(zhan)(zhan)(zhan)孔(kong)內(nei)，三是鉆(zhan)(zhan)(zhan)(zhan)機(ji)鉆(zhan)(zhan)(zhan)(zhan)斗(dou)(dou)(dou)外緣(yuan)邊刃切削(xue)的(de)(de)土體，由于孔(kong)底(di)(di)(di)是立體不(bu)(bu)能(neng)進入筒體的(de)(de)入口，因此(ci)殘留于孔(kong)底(di)(di)(di)邊沿，最后鉆(zhan)(zhan)(zhan)(zhan)斗(dou)(dou)(dou)斗(dou)(dou)(dou)齒是疏排列，齒間漏失不(bu)(bu)行制止(zhi)，鉆(zhan)(zhan)(zhan)(zhan)斗(dou)(dou)(dou)回次進尺過(guo)大，裝載過(guo)滿，渣(zha)土從頂蓋排水孔(kong)擠出。
   根據旋挖鉆(zhan)機(ji)(ji)的工(gong)法，鉆(zhan)桿有(you)兩種(zhong)清(qing)(qing)理(li)方(fang)式，經過歷程變化(hua)土(tu)(tu)渣(zha)與泥(ni)漿(jiang)的比(bi)(bi)(bi)重(zhong)(zhong)差和增減泥(ni)漿(jiang)的粘(zhan)度(du)，來控制土(tu)(tu)渣(zha)沉(chen)(chen)(chen)(chen)降(jiang)速(su)率(lv)的快(kuai)慢，舉例說明咱們要想(xiang)法低沉(chen)(chen)(chen)(chen)土(tu)(tu)渣(zha)沉(chen)(chen)(chen)(chen)降(jiang)速(su)率(lv)，配(pei)制泥(ni)漿(jiang)時(shi)應適(shi)應增長比(bi)(bi)(bi)重(zhong)(zhong)和粘(zhan)度(du)，也可以大概低沉(chen)(chen)(chen)(chen)比(bi)(bi)(bi)重(zhong)(zhong)和粘(zhan)度(du)來加快(kuai)旋挖鉆(zhan)機(ji)(ji)土(tu)(tu)渣(zha)的沉(chen)(chen)(chen)(chen)降(jiang)速(su)率(lv)；孔(kong)底沉(chen)(chen)(chen)(chen)渣(zha)打不到標準，必(bi)須制止清(qing)(qing)孔(kong)，否則樁頂(ding)沉(chen)(chen)(chen)(chen)降(jiang)量(liang)大而承載(zai)極限(xian)值低沉(chen)(chen)(chen)(chen)，沉(chen)(chen)(chen)(chen)降(jiang)法是(shi)終(zhong)孔(kong)后，待土(tu)(tu)渣(zha)積(ji)淀到孔(kong)底再制止清(qing)(qing)孔(kong)，而置換法是(shi)在終(zhong)孔(kong)后馬(ma)上(shang)對孔(kong)底制止整理(li)，即在土(tu)(tu)渣(zha)還沒(mei)有(you)從泥(ni)漿(jiang)中聚集上(shang)去(qu)前用新(xin)配(pei)制的泥(ni)漿(jiang)把孔(kong)內的泥(ni)漿(jiang)置換于孔(kong)外(wai)的一種(zhong)措施。
   旋(xuan)挖鉆機敷(fu)衍正反循環(huan)鉆進，采取換漿清(qing)孔(kong)，可(ke)以(yi)大(da)概應(ying)用(yong)(yong)本(ben)身的旋(xuan)挖鉆機鉆桿制止(zhi)正反循環(huan)換漿，而(er)旋(xuan)挖用(yong)(yong)鉆桿就不(bu)具(ju)備(bei)運送(song)循環(huan)液的成果，要(yao)用(yong)(yong)此(ci)法清(qing)孔(kong)，還須要(yao)重新配制鉆桿和相應(ying)旋(xuan)挖鉆機裝備(bei)，這顯著不(bu)行(xing)行(xing)，而(er)沉(chen)降法少用(yong)(yong)導(dao)管吸泥(ni)泵法，氣氛起落(luo)法，潛(qian)水泥(ni)漿泵法，重要(yao)是(shi)吸渣口的影(ying)響(xiang)范圍(wei)，當孔(kong)徑(jing)為一點五米(mi)時候，若(ruo)吸渣口職位地方不(bu)能(neng)挪動或孔(kong)底(di)無工(gong)具(ju)攪動，則闊別半(ban)徑(jing)處的鉆渣較難(nan)消除。