水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2014年
3期
189-193
,共5页
尾水调压室%球冠穹顶%开挖支护%施工技术
尾水調壓室%毬冠穹頂%開挖支護%施工技術
미수조압실%구관궁정%개알지호%시공기술
tailwater surge chamber%spherical dome%excavation and support%construction technique
乌东德水电站尾水调压井为国内最大的竖井硐室群之一，其单个井身开挖断面为1450 m2。为解决大跨径对地下硐室稳定带来的不利影响，调压井顶拱设计为球冠状。结合右岸尾水调压井球冠穹顶的实际开挖施工情况，从确保大跨度硐室开挖稳定和利于球冠穹顶成型的角度，系统简述了巨型球冠穹顶的开挖施工技术和方法，以期为今后特殊体型地下硐室开挖施工提供借鉴指导意义。
烏東德水電站尾水調壓井為國內最大的豎井硐室群之一，其單箇井身開挖斷麵為1450 m2。為解決大跨徑對地下硐室穩定帶來的不利影響，調壓井頂拱設計為毬冠狀。結閤右岸尾水調壓井毬冠穹頂的實際開挖施工情況，從確保大跨度硐室開挖穩定和利于毬冠穹頂成型的角度，繫統簡述瞭巨型毬冠穹頂的開挖施工技術和方法，以期為今後特殊體型地下硐室開挖施工提供藉鑒指導意義。
오동덕수전참미수조압정위국내최대적수정동실군지일，기단개정신개알단면위1450 m2。위해결대과경대지하동실은정대래적불리영향，조압정정공설계위구관상。결합우안미수조압정구관궁정적실제개알시공정황，종학보대과도동실개알은정화리우구관궁정성형적각도，계통간술료거형구관궁정적개알시공기술화방법，이기위금후특수체형지하동실개알시공제공차감지도의의。
The tailrace surge tank in Wudongde Hydropower Station is one of the largest shaft chamber group in China , its single excavation section is 1 450 square meters .In order to solve the adverse effect of large span on the stability of underground chamber ,the top arch of surge tank should be designed as a spherical crown .Here ,combined with the ac-tual situation of the tailrace surge tank excavation in the right bank of the spherical dome ,and from the point of view for ensuring the large-span chamber excavation stability and conducing to the spherical dome shaping ,the technique and method of super spherical dome construction were described systematically ,so as to provide some references for the exca-vation construction of special-typed underground chambers in the future .
