久久亚洲av午夜福利精品一区_欧美人妻一区二区三区_国产精品久久久久久久_国产AV无码一区二区三区

太(tai)(tai)原(yuan)市集中供(gong)(gong)熱(re)陽曲(qu)熱(re)源廠長(chang)輸(shu)供(gong)(gong)熱(re)管(guan)(guan)(guan)(guan)網工程供(gong)(gong)熱(re)管(guan)(guan)(guan)(guan)線(xian)需穿(chuan)越G2003太(tai)(tai)原(yuan)繞城東環(huan)高速(su)公路K7+476、丈子頭互通(tong)匝道(dao)CK0+120處，供(gong)(gong)熱(re)管(guan)(guan)(guan)(guan)線(xian)為2趟設計管(guan)(guan)(guan)(guan)徑(jing)DN1400聚(ju)氨酯(zhi)保(bao)溫(wen)直(zhi)埋(mai)鋼管(guan)(guan)(guan)(guan)，下穿(chuan)東環(huan)高速(su)公路采用頂(ding)進套(tao)(tao)(tao)(tao)管(guan)(guan)(guan)(guan)施工，供(gong)(gong)熱(re)管(guan)(guan)(guan)(guan)線(xian)分(fen)別(bie)放置于套(tao)(tao)(tao)(tao)管(guan)(guan)(guan)(guan)內， K7+476處套(tao)(tao)(tao)(tao)管(guan)(guan)(guan)(guan)為DN2200Ⅲ級鋼筋(jin)混凝(ning)土鋼承口（JC/T640-2010），兩根套(tao)(tao)(tao)(tao)管(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)道(dao)之間(jian)中心間(jian)距(ju)(ju)7.64米(mi)(mi)，凈距(ju)(ju)5.0米(mi)(mi)，單趟長(chang)度110米(mi)(mi)；丈子頭互通(tong)匝道(dao)CK0+120處套(tao)(tao)(tao)(tao)管(guan)(guan)(guan)(guan)為DN2000鋼管(guan)(guan)(guan)(guan)，根套(tao)(tao)(tao)(tao)管(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)道(dao)之間(jian)中心間(jian)距(ju)(ju)6.036米(mi)(mi)，凈距(ju)(ju)4.0米(mi)(mi)，單趟長(chang)度120米(mi)(mi)；套(tao)(tao)(tao)(tao)管(guan)(guan)(guan)(guan)距(ju)(ju)高速(su)路面豎(shu)向距(ju)(ju)離分(fen)別(bie)為9.34、6.84米(mi)(mi)，施工完畢，套(tao)(tao)(tao)(tao)管(guan)(guan)(guan)(guan)內吹(chui)砂填實。