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
2期
112-116,124
,共6页
溪洛渡水电站%地下厂房%监测%分析%稳定性
溪洛渡水電站%地下廠房%鑑測%分析%穩定性
계락도수전참%지하엄방%감측%분석%은정성
Xiluodu Hydropower Station%undergronnd powerhouse%monitoring%analysis%stability
水电站大型地下厂房具有规模大、结构复杂、交叉开挖率高等特点，开挖期围岩稳定控制难度大。为保证洞室群施工期围岩稳定，需建立有效的监测资料分析方法，对洞室围岩稳定进行评判。从监测分析内容、方法、分析思路出发，通过对位移和应力量级、分布特征、变化规律、影响因素进行分析，对地下厂房洞室群施工期围岩的稳定性进行评价。开挖完成后，围岩最大位移为60．14 mm ，锚杆最大应力为242 MPa ，围岩稳定性较好；围岩松动圈基本在3 m 以内，支护参数合理有效。溪洛渡地下厂房洞室群规模为我国已建和在建工程之首，总结其监测资料分析和围岩稳定评价，对类似工程具有指导和借鉴作用。
水電站大型地下廠房具有規模大、結構複雜、交扠開挖率高等特點，開挖期圍巖穩定控製難度大。為保證洞室群施工期圍巖穩定，需建立有效的鑑測資料分析方法，對洞室圍巖穩定進行評判。從鑑測分析內容、方法、分析思路齣髮，通過對位移和應力量級、分佈特徵、變化規律、影響因素進行分析，對地下廠房洞室群施工期圍巖的穩定性進行評價。開挖完成後，圍巖最大位移為60．14 mm ，錨桿最大應力為242 MPa ，圍巖穩定性較好；圍巖鬆動圈基本在3 m 以內，支護參數閤理有效。溪洛渡地下廠房洞室群規模為我國已建和在建工程之首，總結其鑑測資料分析和圍巖穩定評價，對類似工程具有指導和藉鑒作用。
수전참대형지하엄방구유규모대、결구복잡、교차개알솔고등특점，개알기위암은정공제난도대。위보증동실군시공기위암은정，수건립유효적감측자료분석방법，대동실위암은정진행평판。종감측분석내용、방법、분석사로출발，통과대위이화응역량급、분포특정、변화규률、영향인소진행분석，대지하엄방동실군시공기위암적은정성진행평개。개알완성후，위암최대위이위60．14 mm ，묘간최대응력위242 MPa ，위암은정성교호；위암송동권기본재3 m 이내，지호삼수합리유효。계락도지하엄방동실군규모위아국이건화재건공정지수，총결기감측자료분석화위암은정평개，대유사공정구유지도화차감작용。
The large underground powerhouse of hydropower station has the characteristics such as huge scale ,complex structure ,high rate of crossover excavation etc .,and it is difficult to control the stability of the surrounding rock in the excavation .In order to ensure the stability of the surrounding rock during the construction of underground caverns ,it is necessary to establish the effective analysis method of monitoring data ,so as to evaluate the stability of the surrounding rock .Here ,from the monitoring analysis content and method and thinking ,the magnitude ,distribution characteristics , change regulation and influence factor of surrounding rock displacement and supporting stress are analyzed to monitor the deformation of surrounding rock and evaluate the tunnel stability .The results show that after the completion of excava-tion ,the maximum displacement of surrounding rock is 60 .14 mm ,and the maximum stress of bolt is 242 MPa ,having a good stability of surrounding rock .The surrounding rock’s loose circle is smaller than 3 m ,and the support parameters are reasonable and effective .The scale of Xiluodu Hydropower Station’s undergronnd powerhouse caverns is the first in China ,the summany from the monotoring data analysis and stability evaluation of surrounding rock could provide some references for similar projects .
