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| 1 | Direct shear tests on cemented paste backfill-rock wall and cemented paste backfill-backfill interfaces显示文摘This paper presents the results of the shear strength(frictional strength) of cemented paste backfillcemented paste backfill(CPB-CPB) and cemented paste backfillerock wall(CPB-rock) interfaces. The frictional behaviors of these interfaces were assessed for the short-term curing times(3 d and 7 d) using a direct shear apparatus RDS-200 from GCTS(Geotechnical Consulting & Testing Systems). The shear(friction) tests were performed at three different constant normal stress levels on flat and smooth interfaces. These tests aimed at understanding the mobilized shear strength at the CPB-rock and CPB-CPB interfaces during and/or after open stope filling(no exposed face). The applied normal stress levels were varied in a range corresponding to the usually measured in-situ horizontal pressures(longitudinal or transverse) developed within paste-filled stopes(uniaxial compressive strength, s c 150 k Pa). Results show that the mobilized shear strength is higher at the CPB-CPB interface than that at the CPB-rock interface. Also, the perfect elastoplastic behaviors observed for the CPB-rock interfaces were not observed for the CPB-CPB interfaces with low cement content which exhibits a strain-hardening behavior. These results are useful to estimate or validate numerical model for pressures determination in cemented backfill stope at short term. The tests were performed on real backfill and granite. The results may help understanding the mechanical behavior of the cemented paste backfill in general and, in particular, analyzing the shear strength at backfillebackfill and backfill-rock interfaces. | Nabassé J.F.Koupouli Tikou Belem Patrice Rivard Hervé Effenguet | 2016 | Journal of Rock Mechanics and Geotechnical Engineering2016，8，4： | 19 |
| 2 | Numerical analysis and geophysical monitoring for stability assessment of the Northwest tailings dam at Westwood Mine显示文摘The Westwood Mine aims to reuse the tailings storage facility #1(TSF #1) for solid waste storage, but,downstream of the Northwest dike is considered critical in terms of stability. This paper uses numerical modeling along with geophysical monitoring for assessing the Northwest dike stability during the restoration phase. The impact of waste rock deposition in the upstream TSF #1 is considered. The geophysical monitoring is based on electrical resistivity methods and was used to investigate the internal structure of the dike embankment in different deposition stages. The numerical simulations were performed with SLOPE/W code. The results show a factor of safety well above the minimum recommended value of 1.5. Geophysical monitoring revealed a vertical variation in the electrical resistivity across the dike, which indicates a multilayer structure of the embankment. Without any current in situ data, the geophysical monitoring helped estimating the nature of the materials used and the internal structure of the embankment. These interpretations were validated by geological observation of geotechnical log of the embankment. Based on this study, it is recommended that the water polishing pond be partly filled before waste rock is deposited in TSF #1. In addition, to ensure the stability of the dike, the piezometric head monitoring prior to and during waste rock deposition is recommended. | Coulibaly Yaya Belem Tikou Cheng LiZhen | 2017 | International Journal of Mining Science and Technology2017，27，4： | 11 |
| 3 | Chemical factors that influence the performance of mine sulphidic paste backfill显示文摘 | Mostafa Benzaazoua Tikou Belem Bruno Bussière | 2002 | Cement and Concrete Research2002，，7： | 3 |
| 4 | Effect of rosemary extract, ehitosan and α - to- copherol on microbiological parameters and lipid oxidation of fresh pork sausages stored at 4℃显示文摘 | Dimitrios Georgantelis Ioannis Ambrosiadis Panagiota Ka- tikou | 2007 | 76 ( 1 ) : 172 - 1812007，76，1： | 1 |
| 5 | Effects of curing and stress conditions on hydromechanical, geotechnical and geochemical properties of cemented paste backfill显示文摘 | Erol Yilmaz Tikou Belem Mostafa Benzaazoua | 2014 | Engineering Geology2014，，： | 1 |
| 6 | Microstructural and geochemical evolution of paste tailings in surface disposal conditions显示文摘 | Thomas Deschamps Mostafa Benzaazoua Bruno Bussière Michel Aubertin Tikou Belem | 2007 | Minerals Engineering2007，，4： | 1 |
| 7 | Effects of curing and stress conditions on hydromechanical, geotechnical and geochemical properties of cemented paste backfill显示文摘 | Yilmaz Erol Belem Tikou Benzaazoua Mostafa | 2014 | Engineering Geology2014，168，： | 1 |
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