南水北调与水利科技
南水北調與水利科技
남수북조여수리과기
SOUTH-TO-NORTH WATER
2013年
z2期
229-230
,共2页
倒虹吸渗漏原因%泵站运行边界条件%初探
倒虹吸滲漏原因%泵站運行邊界條件%初探
도홍흡삼루원인%빙참운행변계조건%초탐
the reason of the inverted siphond rainage′s water leakage%the boundary conditions of pump station operation%the preliminary inquiry
南水北调中线干线京石段工程南杏树排水倒虹吸，在三次通水运行期间均发现倒虹吸管身部位伸缩缝、墙体、拉杆孔等处渗水或漏水，通水结束后发现管身所在位置的渠道底部均不同程度的存在渠底塌陷现象。在此期间，泵站集水井内水位变化规律基本一致。通过对强排泵站观测记录和渠道缺陷排查情况综合分析，初步确定渗漏原因，并对泵站运行的边界条件进行探究分析。
南水北調中線榦線京石段工程南杏樹排水倒虹吸，在三次通水運行期間均髮現倒虹吸管身部位伸縮縫、牆體、拉桿孔等處滲水或漏水，通水結束後髮現管身所在位置的渠道底部均不同程度的存在渠底塌陷現象。在此期間，泵站集水井內水位變化規律基本一緻。通過對彊排泵站觀測記錄和渠道缺陷排查情況綜閤分析，初步確定滲漏原因，併對泵站運行的邊界條件進行探究分析。
남수북조중선간선경석단공정남행수배수도홍흡，재삼차통수운행기간균발현도홍흡관신부위신축봉、장체、랍간공등처삼수혹루수，통수결속후발현관신소재위치적거도저부균불동정도적존재거저탑함현상。재차기간，빙참집수정내수위변화규률기본일치。통과대강배빙참관측기록화거도결함배사정황종합분석，초보학정삼루원인，병대빙참운행적변계조건진행탐구분석。
Duringthethreetimesofoperationforwaterdelivery,Nanxingshuinvertedsiphondrainagehaswaterseepageandleakageproblemson the tube body part, wall body, drawbar hole, etc. , and some collapse occurred on the channel bottom upon the tube body part. Nanxingshu in-vertedsiphondrainage,whichbelongstotheBeijing-ShijiazhuangsectionoftheMiddleRouteoftheSouth-to-NorthWaterTransferProject,is managedbyDingzhouAdministration.Duringthisperiod,thechangeofwaterlevelinthepumpingsumpisstable.Thispaperhasmadethecom-prehensive analysis on observation records of the pumping station? for strong drainage and the investigation of channeldefects to preliminarily determine the cause of water leakage, and on the boundary conditions of the pump station operation.
