Journal of rock mechanics and geotechnical engineering
Papers 1,010
1 page of 101 pages (1,010 results)
#1Xiong FeiH-Index: 2
#2Xinrong Liu (Chongqing University)H-Index: 10
Last. Zijuan Wang (Chongqing Technology and Business University)
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Abstract null null Predicting rock cracking is important for assessing the stability of underground engineering. The effects of the intersecting angle α and the distribution orientation angle β of intersecting fissures on the uniaxial compressive strength and the failure characteristics of sandstone containing intersecting fissures are investigated through laboratory experiments and two-dimensional particle flow code (PFC2D). The relationship between the mechanical properties of sandstone and th...
#1Liang Han (Chongqing University)H-Index: 4
#2Lin Wang (Chongqing University)H-Index: 11
Last. Shang Li
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Abstract null null Rockhead profile is an important part of geological profiles and can have significant impacts on some geotechnical engineering practice, and thus, it is necessary to establish a useful method to reverse the rockhead profile using site investigation results. As a general method to reflect the spatial distribution of geo-material properties based on field measurements, the conditional random field (CRF) was improved in this paper to simulate rockhead profiles. Besides, in geotec...
Abstract null null Kozeny–Carman (KC) equation is a well-known relation between hydraulic conductivity and pore properties in porous material. The applications of KC equation to predicting saturated hydraulic conductivities of sands and non-expansive soils are well documented. However, KC equation is incapable of predicting saturated hydraulic conductivity of expansive soil (e.g. bentonite) well. Based on a new dual-pore system, this study modified KC equation for improving the prediction of sat...
#1Wei You (Sichuan University)H-Index: 2
#2Feng Dai (Sichuan University)H-Index: 50
Last. Yi Liu (Sichuan University)H-Index: 21
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Abstract null null Accurately characterizing the mechanical responses and cracking mechanism of three-dimensional confined fractured rocks under coupled static-dynamic loading is of paramount importance for underground engineering construction. Using a modified split Hopkinson pressure bar (SHPB) system, five groups of single-flawed specimens with the axial prestress ratio from 0 to 0.8 are tested at the strain rates in the range of 65–205 s−1 under a fixed radial prestress. Our results indicate...
#1Fatemeh Sadeghian (Semnan University)H-Index: 2
#2Soheil Jahandari (USYD: University of Sydney)H-Index: 14
Last. Jie Li (RMIT: RMIT University)H-Index: 83
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Abstract: null null Electrokinetic (EK) treatment is an effective method in accelerating the consolidation and improving the geotechnical properties of fine-grained soils. This method stabilizes the soil and increases the bearing capacity of piles by improving the soil shear strength. Changing the soil pH, due to the occurrence of chemical reactions of electrolysis in the soil, can increase its shear strength. However, the electrodes used in this method corrode due to the change in the soil pH, ...
#1Zhijun Wu (WHU: Wuhan University)H-Index: 26
#2Rulei Wei (WHU: Wuhan University)
Last. Quansheng Liu (WHU: Wuhan University)H-Index: 26
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Abstract null null Real-time perception of rock mass information is of great importance to efficient tunneling and hazard prevention in tunnel boring machines (TBMs). In this study, a TBM–rock mutual feedback perception method based on data mining (DM) is proposed, which takes 10 tunneling parameters related to surrounding rock conditions as input features. For implementation, first, the database of TBM tunneling parameters was established, in which 10,807 tunneling cycles from the Songhua River...
#1Deheng Wei (USYD: University of Sydney)H-Index: 7
#2Budi Zhao (UCD: University College Dublin)H-Index: 9
Last. Yixiang Gan (USYD: University of Sydney)H-Index: 24
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Abstract null null Particle morphology has great influence on mechanical behaviour and hydro/thermal/electrical conductivities of granular materials. Surface reconstruction and mesh generation are critical to consider realistic particle shapes in various computational simulations. This study adopts the combined finite- discrete element method (FDEM) to investigate single particle crushing behaviour. Particle shapes were reconstructed with spherical harmonic (SH) in both spherical and Cartesian c...
#1Wenbin Fei (University of Melbourne)H-Index: 7
#2Guillermo A. Narsilio (University of Melbourne)H-Index: 18
Abstract null null Effective thermal conductivity of soils can be enhanced to achieve higher efficiencies in the operation of shallow geothermal systems. Soil cementation is a ground improvement technique that can increase the interparticle contact area, leading to a high effective thermal conductivity. However, cementation may occur at different locations in the soil matrix, i.e. interparticle contacts, evenly or unevenly around particles, in the pore space or a combination of these. The topolo...
#1Harun Sonmez (Hacettepe University)H-Index: 25
#2Murat Ercanoglu (Hacettepe University)H-Index: 17
Last. Gulseren Dagdelenler (Hacettepe University)H-Index: 6
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Abstract null null Rock quality designation (RQD) has been considered as a one-dimensional jointing degree property since it should be determined by measuring the core lengths obtained from drilling. Anisotropy index of jointing degree (AIjd) was formulated by null Zheng et al. (2018) null by considering maximum and minimum values of RQD for a jointed rock medium in three-dimensional space. In accordance with spacing terminology by null ISRM (1981) , defining the jointing degree for the rock mas...
#1M. Zhelnin (RAS: Russian Academy of Sciences)H-Index: 3
#2A. Kostina (RAS: Russian Academy of Sciences)H-Index: 3
Last. L. Levin (RAS: Russian Academy of Sciences)H-Index: 2
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Abstract null null Artificial freezing of water-bearing soil layers composing a sedimentary deposit can induce frost heave and water migration that affect the natural stress–strain state of the soil layers and freezing process. In the present paper, a thermo-hydro-mechanical (THM) model for freezing of water-saturated soil is proposed to study the effects of frost heave and water migration in frozen soils on the formation of a frozen wall and subsequent excavation activity for sinking a vertical...
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