人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
14期
41-42,52
,共3页
单海年%李水兵%祁舵%吴书艳%余海
單海年%李水兵%祁舵%吳書豔%餘海
단해년%리수병%기타%오서염%여해
S型增长模型%比例系数%岩石位移%隧洞开挖
S型增長模型%比例繫數%巖石位移%隧洞開挖
S형증장모형%비례계수%암석위이%수동개알
S-type growth model%proportion coefficient%rock displacement%tunnel excavation
隧洞开挖爆破过程中会引起上覆岩石位移，上覆岩石位移量与时间及其距隧洞顶拱的距离存在一定的关联性。通过江苏某抽水蓄能隧洞开挖项目实际监测数据发现，不同高度处的岩石位移量与岩石距隧洞顶拱的距离( H )存在反比例关系，建立该比例系数与时间( ln( t ))的“S型增长模型”，通过该模型对后期的岩石位移进行预测。结果表明，预测结果达到很高的精度，具有一定的工程参考价值。
隧洞開挖爆破過程中會引起上覆巖石位移，上覆巖石位移量與時間及其距隧洞頂拱的距離存在一定的關聯性。通過江囌某抽水蓄能隧洞開挖項目實際鑑測數據髮現，不同高度處的巖石位移量與巖石距隧洞頂拱的距離( H )存在反比例關繫，建立該比例繫數與時間( ln( t ))的“S型增長模型”，通過該模型對後期的巖石位移進行預測。結果錶明，預測結果達到很高的精度，具有一定的工程參攷價值。
수동개알폭파과정중회인기상복암석위이，상복암석위이량여시간급기거수동정공적거리존재일정적관련성。통과강소모추수축능수동개알항목실제감측수거발현，불동고도처적암석위이량여암석거수동정공적거리( H )존재반비례관계，건립해비례계수여시간( ln( t ))적“S형증장모형”，통과해모형대후기적암석위이진행예측。결과표명，예측결과체도흔고적정도，구유일정적공정삼고개치。
Displacement of overlying rock can be induced by tunnel explosive excavation, which has some relation with the time variable as well as the distance between overlying rock and tunnel ceiling. Through a monitoring case carried out in a pumped-storage power generating plant, an inverse proportion relation between displacement of rock at different levels and the distance between rock and tunnel ceiling was revealed. Furthermore, an S type growth model of the proportion coefficient and the time variable is established, by which, the rock displacement is predicted with satisfied accuracy.
