施工技术
施工技術
시공기술
CONSTRUCTION TECHNOLOGY
2014年
21期
24-26
,共3页
水电站%围堰%防渗墙%钻劈法%施工技术
水電站%圍堰%防滲牆%鑽劈法%施工技術
수전참%위언%방삼장%찬벽법%시공기술
hydroelectric power stations%cofferdams%anti-seepage wall%boring cleaving method%construction
大岗山水电站上、下游土石围堰采用复合土工膜心墙普通混凝土防渗墙，防渗墙质量的好坏直接影响基坑开挖及大坝主体工程施工，意义重大。由于围堰地处狭窄的“V”形河谷地段，地势陡峻，且河床部位有多条辉绿岩脉、断层、破碎带穿插，地质条件十分复杂，给防渗墙施工带来了极大困难。本工程采用钻劈法施工工艺成功解决了防渗墙成槽难题。
大崗山水電站上、下遊土石圍堰採用複閤土工膜心牆普通混凝土防滲牆，防滲牆質量的好壞直接影響基坑開挖及大壩主體工程施工，意義重大。由于圍堰地處狹窄的“V”形河穀地段，地勢陡峻，且河床部位有多條輝綠巖脈、斷層、破碎帶穿插，地質條件十分複雜，給防滲牆施工帶來瞭極大睏難。本工程採用鑽劈法施工工藝成功解決瞭防滲牆成槽難題。
대강산수전참상、하유토석위언채용복합토공막심장보통혼응토방삼장，방삼장질량적호배직접영향기갱개알급대패주체공정시공，의의중대。유우위언지처협착적“V”형하곡지단，지세두준，차하상부위유다조휘록암맥、단층、파쇄대천삽，지질조건십분복잡，급방삼장시공대래료겁대곤난。본공정채용찬벽법시공공예성공해결료방삼장성조난제。
The upstream and downstream concrete cofferdam of the Dagangshan hydroelectric power station uses usual concrete anti?seepage wall with composite geomembrane core?wall. It is of great significance because the quality of the anti?seepage wall will directly affect the construction of foundation excavation and the main work of the dam. The geological conditions are complex that the cofferdam locates in V?shaped valley area with steep terrain, moreover multiple diabase dikes, faults and fracture zone lie in riverbed, which brings greatly difficulties to the anti?seepage wall. The project solves how to make slot with construction technology of boring cleaving method.
