人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
13期
61-64,98
,共5页
陈恩瑜%胡泉光%汪文桥%樊春喜
陳恩瑜%鬍泉光%汪文橋%樊春喜
진은유%호천광%왕문교%번춘희
复杂地质%大变形%开挖支护%技术优化%N-J地下厂房
複雜地質%大變形%開挖支護%技術優化%N-J地下廠房
복잡지질%대변형%개알지호%기술우화%N-J지하엄방
complicated geology%large deformation%excavation support%technology optimization%underground powerhouse of N-J Hydropower Station
巴基斯坦N-J水电站地下厂房区域围岩差，地质条件复杂，而厂房开挖跨度大、高度高、贯入四周高边墙的洞室多，致使厂房在开挖过程中产生了较大的围岩收敛变形，最大变形值达302 mm。以地下厂房超前地质勘探和变形监测成果为依据，从开挖施工程序、方法以及永久支护设计调整和优化等角度，详细介绍和总结了大变形条件下的地下厂房开挖施工技术及其技术要点。可供类似工程借鉴参考。
巴基斯坦N-J水電站地下廠房區域圍巖差，地質條件複雜，而廠房開挖跨度大、高度高、貫入四週高邊牆的洞室多，緻使廠房在開挖過程中產生瞭較大的圍巖收斂變形，最大變形值達302 mm。以地下廠房超前地質勘探和變形鑑測成果為依據，從開挖施工程序、方法以及永久支護設計調整和優化等角度，詳細介紹和總結瞭大變形條件下的地下廠房開挖施工技術及其技術要點。可供類似工程藉鑒參攷。
파기사탄N-J수전참지하엄방구역위암차，지질조건복잡，이엄방개알과도대、고도고、관입사주고변장적동실다，치사엄방재개알과정중산생료교대적위암수렴변형，최대변형치체302 mm。이지하엄방초전지질감탐화변형감측성과위의거，종개알시공정서、방법이급영구지호설계조정화우화등각도，상세개소화총결료대변형조건하적지하엄방개알시공기술급기기술요점。가공유사공정차감삼고。
The underground powerhouse of N-J Hydropower Station in Pakistan is located in a region where the surrounding rock is poor and the geological condition is complicated. Furthermore, the powerhouse excavation is large in span and height, and many caverns pass through surrounding high side wall, causing large convergence deformation in the excavation process with the maximum value of 302 mm. Based on previous geological survey and monitoring results of deformation, the construction technolo-gy of underground powerhouse excavation under large deformation and the key technical point were introduced and summarized from the aspects of procedure and method of excavation construction, adjustment and optimization of permanent support design.
