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加强这两方面管理 保障非开挖工程施工质量

来源:kjccz.com 日期: 2019-9-17 9:47:50

kpl竞猜平台 ZAIMUQIANGEZHONGSHIZHENGGONGCHENGZHONG,FEIKAIWAGONGCHENGJISHUDEYINGYONGKEWEISHIYUELAIYUEGUANGFAN。ZHEIYESHIMUQIANBIJIAOSHOUHUANYINGDEYIZHONGSHIGONGFANGFA。YINWEIFEIKAIWAGONGCHENGZAISHIGONGSHIDUIDIBIAODEPOHUAIBIJIAOXIAO,YEBIJIAOFUHEMUQIANHUANBAODEZHENGCE,SUOYISHOUDAOGEJIEDEQINGLAI。ZAIJIAQIANGFEIKAIWAGONGCHENGDESHIGONGZHILIANGFANGMIAN,WOMENYINGGAIZUODAONAXIENI?XIAMIANDEWENZHANGWOMENYIQILAIKANYIXIABA。

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非开挖工程和其它施工方法一样,也存在特定的局限性,如要求覆土厚度较深、土质均匀且为软塑、流塑粘性土、迎面阻力不宜过大等


一、施工条件方面

SUIRANFEIKAIWADINGGUANGONGCHENGGONGYIDUIYUZAIYUNIZHITUCENGFUSHEZHONGLILIUDEPAISHUIGUANDAOHEDAKOUJINGYALIGUANDAOSHIJIAOWEIJINGJI、JIAOWEIJIANBIANDESHIGONGFANGFA,DANFEIKAIWAGONGCHENGHEQITASHIGONGFANGFAYIYANG,YECUNZAITEDINGDEJUXIANXING,RUYAOQIUFUTUHOUDUJIAOSHEN、TUZHIJUNYUNQIEWEIRUANSU、LIUSUZHANXINGTU、YINGMIANZULIBUYIGUODADENG。DUIYIXIETESHUDIZHIQINGKUANG,CAIYONGJIYASHIDINGGUANGONGYIHUISHOUDAOTEDINGCHENGDUDEXIANZHI,RUZAIDAKOUJINGPAISHUIGUANDAODESHIGONGZHONG,YOUYUZAISHACENGZHONGDINGJIN,DINGLIJIDA,DAOZHIYICIDINGJINJULIJIDUAN,TOUZIZENGDA;TONGSHIRUOGUANCAIWEIPINGKOUGUAN,ZAIGUANXIANJIUPIANSHI,JIEKOUHUICUOKAI,SHENLOUYANZHONG;HOULAITONGGUOYINJINFENGBISHIDINGGUANSHIGONG,JIEJUELEZAIZHEIZHONGTESHUDIZHIQINGKUANGXIAGUANXIANDESHIGONG。

 

针对非开挖工程顶管工艺存在的问题,可以通过采用封闭式顶管和高强度承插式管材来解决,但这会增加一部分工程费用


二、补救措施方面

ZHENDUIFEIKAIWAGONGCHENGDINGGUANGONGYICUNZAIDEWENTI,KEYITONGGUOCAIYONGFENGBISHIDINGGUANHEGAOQIANGDUCHENGCHASHIGUANCAILAIJIEJUE,DANZHEIHUIZENGJIAYIBUFENGONGCHENGFEIYONG。XIANZAIZAIRUANTUDIQU,FENGBISHIDINGGUANYIJINGHUODELEDAJIADERENKE,DEDAOLEGUANGFANDEYINGYONG,CHENGWEIFEIKAIWAGONGCHENGDINGGUANGONGYIDEBUCHONGHEFAZHAN,CAIYONGLE“F”XINGGANGCHENGCHAKOUGUANCAI,YOUYUJIEKOUXINGSHIGENGJIAHELI、SHIYINGXINGQIANG,ZENGJIALEZAISHACENGZHONGSHIYONGDEKEKAOXING,HENSHAOCHUXIANYOUYUGUANJIEJIUPIANERDAOZHIDEJIEKOUCUOKAITUOLUO、GUANXIANCHUXIANSHENLOUDENGXIANXIANG,SHIDEFEIKAIWAJIYASHIDINGGUANGONGYICUNZAIDEQUEQIANDEDAOWANSHAN。

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由于受到工程地质情况、建设条件、建设资金、工程周期的诸多条件的限制,其它非开挖工程施工技术在市政工程的应用相对较少


由于受到工程地质情况、建设条件、建设资金、工程周期的诸多条件的限制,其它非开挖工程施工技术在市政工程的应用相对较少,除挤压式顶管工艺外,水平定向钻成为另外一种成功用的非开挖施工技术。目前,水平定向钻在软土地区的应用还局限于电力、通信和煤气等领域以及一些小口径的压力管道,如过河倒虹管等,但我们也看到,由于功率、扭矩的限制和精度控制,水平定向钻还不大适合大口径管线和重力流管线的敷设,在今后的实际应用中还应加强这方面的研究和实践。【具体可参考《详解非开挖工程科学施工步骤及各环节施工技术要点》的相关内容】

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