避免球墨鑄鐵管線不均勻下沉方法

避免球墨鑄鐵管線不均勻下沉方法
因Txingchengchakouqiumozhutieguandeyanmixingzhuyaoqujueyuxiangjiaoquandezhuangshezhiliang，zaiguandaoshigongwanchenghou，kenengyinweibujunyunxiachenzaochengjiekouchuchuxianjiajiao
，cushixiangjiaoquanbianxinghuoyidong，從而使之不能起到密封的效果。為方式今後由於不均勻下沉而引起管道滲水的現象，一定要采用科學的防沉降方法。（1）對(dui)管(guan)線(xian)部(bu)位(wei)的(de)土(tu)壤(rang)進(jin)行(xing)夯(hang)實(shi)且(qie)敷(fu)設(she)砼(tong)墊(dian)層(ceng)，在(zai)管(guan)道(dao)施(shi)工(gong)後(hou)用(yong)黃(huang)沙(sha)填(tian)實(shi)管(guan)道(dao)底(di)部(bu)。搗(dao)實(shi)土(tu)層(ceng)有(you)助(zhu)於(yu)減(jian)少(shao)下(xia)沉(chen)量(liang)，敷(fu)設(she)墊(dian)層(ceng)能(neng)在(zai)墊(dian)層(ceng)區(qu)防(fang)止(zhi)不(bu)均(jun)勻(yun)下(xia)沉(chen)，黃(huang)沙(sha)因(yin)本(ben)身(shen)微(wei)粒(li)狀(zhuang)特(te)征(zheng)，能(neng)保(bao)證(zheng)管(guan)道(dao)底(di)部(bu)和(he)墊(dian)層(ceng)中(zhong)的(de)空(kong)隙(xi)被(bei)填(tian)滿(man)，不(bu)會(hui)出(chu)現(xian)不(bu)均(jun)勻(yun)下(xia)沉(chen)。（2）對預測不均勻下沉威脅性很大的地區，能用角鋼加工成 H型的支架把管道托起。H型支架通常安裝在接口周邊，各個接口安裝一個。