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当前位置:网站kpl竞猜平台 > 常见问题 > 详解非开挖工程科学施工步骤及各环节施工技术要点

详解非开挖工程科学施工步骤及各环节施工技术要点

来源:kjccz.com 日期: 2019-8-24 8:58:49

FEIKAIWAGONGCHENGJIUSHIZHILIYONGYANTUZUANJUE、DINGXIANGCEKONGDENGJISHUSHOUDUAN,ZAIDIBIAOBUWACAOHEDICENGJIEGOUPOHUAIJIXIAODEQINGKUANGXIAJINXINGSHIGONG。SUIRANFEIKAIWAGONGCHENGJISHUQIBUJIAOWAN,DANSHIZAIJINNIANLAI,GAIJISHUWULUNSHIZAILILUNSHANG,HAISHIZAISHIGONGGONGYIFANGMIAN,DOUYOULETUFEIMENGJINDEFAZHAN。YOUCI,FEIKAIWAGONGCHENGCHENGWEILECHENGSHIPUSHEGUANDAODEZHONGYAOSHIGONGSHOUDUAN,NEIMETADESHIGONGBUZHOUYOUNAXIENI?

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非开挖工程施工准备:将导向钻头安装连接,检查探头发射的各个参数是否正常,探头电池容量是否足够


一、非开挖工程导向孔施工

kpl竞猜平台 FEIKAIWAGONGCHENGSHIGONGZHUNBEI:JIANGDAOXIANGZUANTOUANZHUANGLIANJIE,JIANCHATANTOUFASHEDEGEGECANSHUSHIFOUZHENGCHANG,TANTOUDIANCHIRONGLIANGSHIFOUZUGOU。

kpl竞猜平台 KAIKONG:WEIBAOZHANGRUSHEJIAODEZHUNQUEHEWENDING,KAIKONGSHIXUBAOCHILIANXUZUANJINZHISHAO2.5m,TONGSHIYICAIYONGDIZUANSU、XIAOBENGLIANG、MANJINCHI。

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根据非开挖工程敷设管道的直径和根数计算需要成孔的小直径,既不能过大,也不可过小,成孔直径过大,敷设管道周围土层坍塌易造成路面下陷


二、非开挖工程回拉扩孔

KONGJINGSHEJI:GENJUFEIKAIWAGONGCHENGFUSHEGUANDAODEZHIJINGHEGENSHUJISUANXUYAOCHENGKONGDEXIAOZHIJING,JIBUNENGGUODA,YEBUKEGUOXIAO,CHENGKONGZHIJINGGUODA,FUSHEGUANDAOZHOUWEITUCENGTANTAYIZAOCHENGLUMIANXIAXIAN,CHENGKONGZHIJINGGUOXIAO,HUISHILAGUANZULIZENGDA,YINQITUOGUANHUOGUANDAOBIANXING。

FENJIKUOKONG:GEJIKUOKONGFENBIEWEIYIJIφ200mm、ERJIφ250mm、SANJIφ300mm、SIJIφ400mm、WUJIφ500mmDENG。GENJUSHEJIDECHENGKONGZHIJING,YOUXIAODAODAFENJIKUOKONG,ZHIZHIKUODAOGONGYIYAOQIUDEKONGJING。

KONGBIJIAGU:KUOKONGDETONGSHITONGGUOKUOKONGZUANTOUXIANGKONGZHONGZHURUNIJIANG,NIJIANGDENONGDUGENJUBUTONGDETUCENGTIAOJIANLAIPEIZHI。NIJIANGSHENTOUDAOKONGBIZHONG,TONGGUOKUOKONGZUANTOUDEJIYAHEMOCA,QIDAODUIKONGBIDEWEIHUHEWENDINGZUOYONG。

 

非开挖工程拉管过程中的回拉力要克服管道与孔壁摩擦力,成孔的质量与导向孔的曲线形状以及扩孔工艺有着密切关系


回拉敷管:非开挖工程拉管过程中的回拉力要克服管道与孔壁摩擦力,成孔的质量与导向孔的曲线形状以及扩孔工艺有着密切关系,正常情况下敷设PVC或PE管的回拉力不应超过5kN,拉力过大会造成管材断裂或变形。【具体可参考《管道非开挖工程施工中经常会遇到哪些问题?》的相关内容】

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