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| 1 | An analytical model for estimating rock strength parameters from small-scale drilling data显示文摘The small-scale drilling technique can be a fast and reliable method to estimate rock strength parameters. It needs to link the operational drilling parameters and strength properties of rock. The parameters such as bit geometry, bit movement, contact frictions and crushed zone affect the estimated parameters.An analytical model considering operational drilling data and effective parameters can be used for these purposes. In this research, an analytical model was developed based on limit equilibrium of forces in a Tshaped drag bit considering the effective parameters such as bit geometry, crushed zone and contact frictions in drilling process. Based on the model, a method was used to estimate rock strength parameters such as cohesion, internal friction angle and uniaxial compressive strength of different rock types from operational drilling data. Some drilling tests were conducted by a portable and powerful drilling machine which was developed for this work. The obtained results for strength properties of different rock types from the drilling experiments based on the proposed model are in good agreement with the results of standard tests. Experimental results show that the contact friction between the cutting face and rock is close to that between bit end wearing face and rock due to the same bit material. In this case,the strength parameters, especially internal friction angle and cohesion, are estimated only by using a blunt bit drilling data and the bit bluntness does not affect the estimated results. | Sajjad Kalantari Alireza Baghbanan Hamid Hashemalhosseini | 2019 | Journal of Rock Mechanics and Geotechnical Engineering2019，11，1： | 9 |
| 2 | Hydraulic properties of fractured rock masses with correlated fracture length and aperture显示文摘 | Alireza Baghbanan Lanru Jing | 2006 | International Journal of Rock Mechanics and Mining Sciences2006，，5： | 2 |
| 3 | Effect of seismic waves on the hydro-mechanical properties of fractured rock masses显示文摘The transmission of seismic waves in a particular region may influence the hydraulic properties of a rock mass, including permeability, which is one of the most important. To determine the effect of a seismic wave on the hydraulic behavior of a fractured rock mass, systematic numerical modeling was conducted. A number of discrete fracture network(DFN) models with a size of 20 m × 20 m were used as geometrical bases, and a discrete element method(DEM) was employed as a numerical simulation tool. Three different boundary conditions without(Type Ⅰ) and with static(Type Ⅱ) and dynamic(Type Ⅲ) loading were performed on the models, and then their permeability was calculated. The results showed that permeability in Type Ⅲ models was respectively 62.7% and 44.2% higher than in Type I and Type Ⅱ models. This study indicates that seismic waves can affect deep earth, and, according to the results, seismic waves increase the permeability and change the flow rate patterns in a fractured rock mass. | Meysam Lak Alireza Baghbanan Hamid Hashemolhoseini | 2017 | Earthquake Engineering and Engineering Vibration2017，16，3： | 2 |
| 4 | Hydraulic properties of fractured rockmasses with correlated fracture length and aperture显示文摘 | BAGHBANAN A JING L | 2007 | InternationalJournal of Rock Mechanics and Mining Sciences2007，44，70： | 1 |
| 5 | Stress effects on permeability in a fractured rock mass with correlated fracture length and aperture 显示文摘 | Baghbanan A Jing L | 2008 | Interna- tional Journal of Rock Mechanics and Mining Sciences2008，45，8： | 1 |
| 6 | Stress effects on permeability in afractured rock mass with correlated fracture length and aperture显示文摘 | BAGHBANAN A JING L | 2008 | International Journal of Rock Mechanics and Mining Sciences2008，45，13： | 1 |
| 7 | Measuring fracture toughness of crystalline marbles under modes I and II and mixed mode I - II loading conditions using CCNBD and HCCD specimens显示文摘 | AMROLLAHI H BAGHBANAN A HASHEMOLHOSSEINI H | 2011 | International Journal of Rock Mechanics and Mining Sciences2011，48，： | 1 |
| 8 | Hydraulic properties of fractured rock masses with correlated fracture length and aperture显示文摘 | BAGHBANAN A JING L | 2007 | International Journal of Rock Mechanics and Mining Sciences2007，44，5： | 1 |
| 9 | Stress effects on permeability in a fractured rock mass with correlated fracture length and aperture显示文摘 | BAGHBANAN A JING L | 2008 | International Journal of Rock Mechanics and Mining Sciences2008，45，8： | 1 |
| 10 | Stress effects on permeability in a fractured rock mass with correlated fracture length and aperture显示文摘 | BAGHBANAN A J1NG L | 2008 | International Journal of Rock Mechanics and Mining Sciences2008，45，8： | 1 |
| 11 | Hydraulic properties of fractured rock masses with correlated fracture length and aperture显示文摘 | BAGHBANAN A JING L | 2007 | International Journal of Rock Mechanics and Mining Sciences2007，44，5： | 1 |
| 12 | Hydraulic properties of fracture rock masses with correlated fracture length and aperture显示文摘 | BAGHBANAN A JING L | 2007 | International Journal of Rock Mechanics & Mining Sciences2007，44，5： | 1 |
| 13 | Stress effects on permeability in a fractured rock mass with correlated fracture length and aperture显示文摘 | BAGHBANAN A JING L | 2008 | International Journal of RockMechanics & Mining Sciences2008，45，8： | 1 |
| 14 | Stress effects on permeability in a fractured rock mass with correlated fracture length and aperture显示文摘 | BAGHBANAN A JINGA L | 2008 | Rock Mechanics and Mining Sciences2008，45，8： | 1 |
| 15 | Hydraulic properties of fractured rock masses with correlated fracture length and aperture显示文摘 | Alireza Baghbanan Lanru Jing | 2006 | International Journal of Rock Mechanics and Mining Sciences2006，，5： | 1 |
| 16 | Hydraulic properties of fractured rock masses with correlated fracture length and aperture显示文摘 | BAGHBANAN A JING L R | 2007 | International Journal of Rock Mechanics and Mining Sciences2007，44，5： | 1 |
| 17 | Effects of fracture geometry and stress on the strength of a fractured rock mass显示文摘 | Khani A Baghbanan A Norouzi S Hashemolhosseini H | | 0，，01： | 1 |
| 18 | Hydraulic properties of fractured rock masses with correlated fracture length and aperture显示文摘 | BAGHBANAN A JING L R | 2007 | International Journal of Rock Mechanics and Mining Sciences2007，44，5： | 1 |
| 19 | Stress effects on permeability in a fractured rock mass with correlated fracture length and aperture显示文摘 | BAGHBANAN A JING L R | 2008 | International Journal of Rock Mechanics and Mining Sciences2008，45，8： | 1 |
| 20 | Ovet consolidation effect on shear behavior of rock joints显示文摘 | Babanouri N Karimi Nasab S Baghbanan A etc | 2011 | In- ternational Journal of Rock Mechanics and Mining Sciences2011，18，8： | 1 |
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