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16篇 您的检索式:作者名="C.F. Lee"
    题名 作者 年代 出处 被引量
1Application and reliability analysis of DPM system in site investigation of HK weathered granite显示文摘A drilling process monitor (DPM) for ground characterization of weathered granite is presented. The monitor is portable and can be mounted on a hydraulic rotary drilling rig to record various drilling parameters in real time during normal subsurface in- vestigation. The identification method for dominative and subsidiary interfaces has been established. The study reveals that the monitored drilling parameters are dependent on geotechnical materials and can be further applied to characterize ground interfaces. The t-test between manual logging and DPM logging has been carried out. The results show that the DPM has high accuracy in inter- faces detection and well agreement with the manual logging. The findings show that the device and data analysis method are of po- tential application in subsurface drilling exploration in weathered granites. It also seems to have prospective uses in the determination of orebody boundary as well as in the detection of geohazards.Zhuoying Tan Meifeng Cai Zhongqi Yue L.G. Tham C.F. Lee 2005Journal of University of Science and Technology Beijing2005,12,6:12
2Response of an old landslide to reservoir filling: A case history显示文摘Unfavorable hydrodynamic evolution is considered as the major cause leading to reservoir slope instability and is often modeled by numerical method. However, this simulation is seldom checked by systematic field instrumentation. Taking the opportunity of filling the Three Gorges Reservoir, a system was established in Xietan landslide to monitor reservoir water level, subground water level, seepage pressure, rainfall and deformation, etc. The monitored data during reservoir filling shows that: (1) The water level rise in the bank lags behind the reservoir filling and the lag time depends on the bank permeability; (2) rainfall-induced subground water rise and its lag time is closely correlated to hourly rainfall, indicating that it is not feasible or sufficient to use daily rainfall for analysis; (3) the effect of inverse seepage during reservoir filling on stability is ephemeral and reservoir filling is the major cause leading to bank instability.L.G. Tham C.F. Lee 2005Science China(Technological Sciences)2005,48,z1:2
3Displacement back analysis for a steep slope at the Three Gorges Project site显示文摘J.H. Deng C.F. Lee 2001International Journal of Rock Mechanics and Mining Sciences2001,,2:1
4Instrumented borehole drilling for interface identification in intricate weathered granite ground engineering显示文摘The successful application in drilling for HK simple weathered granite foundation has revealed its further use in instru- mented drilling system as a ground investigation tool in the detection of other lithology formations, geohazards, underground water, and boundary of orebody. To expand the further use and test the accuracy in identification of formation, an R-20 rotary-hydraulic drill rig was instrumented with a digital drilling process monitoring system (DPM) for drilling in an intricate decomposed granite site. In this test ground, the boreholes revealed that the weathered granite alternately changes between moderate and strong. The qualitative and quantitative analysis of the penetrating parameters, indicates the effective thrust force, rotary speed, flushing pressure, penetrating rate, and displacement of the bit fluctuate at ground interfaces. It shows that the parameters get a good response with the change of rock strength at the interfaces, which can reveal the change of the intricate granite formation. Besides, a variable-slope method has been established, for identification of dominative and subsidiary interfaces in the granite site. The result from a t-test shows that the confi- dence of the instrumented drilling system in identification of the geotechnical interfaces is up to 99%.Zhuoying Tan Meifeng Cai Z.Q. Yue L.G Tham C.F. Lee 2007Journal of University of Science and Technology Beijing2007,14,3:1
5A dynamic surface topography model for the prediction of nano-surface generation in ultra-precision machining显示文摘W.B. Lee C.F. Cheung 2001International Journal of Mechanical Sciences2001,,4:1
6Tunnel waterproofing practices in China显示文摘Y. Yuan X. Jiang C.F. Lee 2000Tunnelling and Underground Space Technology incorporating Trenchless Technology Research2000,,2:1
7Estimating the excavation disturbed zone in the permanent shiplock slopes of the Three Gorges Project, China显示文摘Q. Sheng Z.Q. Yue C.F. Lee L.G. Tham H. Zhou 2002International Journal of Rock Mechanics and Mining Sciences2002,,2:1
8A multi-faceted and automatic knowledge elicitation system (MAKES) for managing unstructured information显示文摘C.F. Cheung W.B. Lee W.M. Wang Y. Wang W.M. Yeung 2010Expert Systems With Applications2010,,5:1
9Systematic numerical simulation of rock tunnel stability considering different rock conditions and construction effects显示文摘Weishen Zhu Shucai Li Shuchen Li Weizhong Chen C.F. Lee 2003Tunnelling and Underground Space Technology incorporating Trenchless Technology Research2003,,5:1
10Displacement back analysis for a steep slope at the Three Gorges Project site显示文摘J.H. Deng C.F. Lee 2001International Journal of Rock Mechanics and Mining Sciences2001,,2:1
11The local vibration modes due to impact on the edge of a viaduct显示文摘Y.Y. Lee K.W. Ngai C.F. Ng 2004Applied Acoustics2004,,11:1
12The local vibration modes due to impact on the edge of a viaduct显示文摘Y.Y. Lee K.W. Ngai C.F. Ng 2004Applied Acoustics2004,,11:1
13Assessment of an equivalent porous medium for coupled stress and fluid flow in fractured rock显示文摘Y.X. Xiao C.F. Lee S.J. Wang 1999International Journal of Rock Mechanics and Mining Sciences1999,,7:1
14A dynamic model for rainfall-induced landslides on natural slopes显示文摘H. Chen C.F. Lee 2002Geomorphology2002,,4:1
15The 1786 earthquake-triggered landslide dam and subsequent dam-break flood on the Dadu River, southwestern China显示文摘F.C. Dai C.F. Lee J.H. Deng L.G. Tham 2004Geomorphology2004,,3:1
16Displacement back analysis for a steep slope at the Three Gorges Project site显示文摘J.H. Deng C.F. Lee 2001International Journal of Rock Mechanics and Mining Sciences2001,,2:1
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