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Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-494
... The law of fluid flow in shear fractures provides a basis. 2. Basic composition of the experimental system The true triaxial shear-self-supporting crack diversion experiment device is mainly composed of five parts: vertical loading system, horizontal shear loading system, hydraulic servo loading system...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-470
... of cohesion and tension strength on the macro strength. Figure 3. Calibration results with experiments. This study focused on soft rock engineering, with the given basic parameters based on experimental results of the typical soft rocks in southern China. The experiments were carried out in a previous study...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-506
... 12 14 16 Strain Figure 2. Stress strain curves of numerical experiment and laboratory test Figure 3. Macro performance of numerical experiment and laboratory test Table 2. Comparison of experimental mechanical parameters E 103MPa MPa Numerical Simulation 8.4 10.9 Laboratory Test 8.5 10.8 Based...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-550
... of understanding, there is no clear conclusion. Moreover, the research on multi-cluster fracture propagation mainly focuses on the numerical simulation method, while the physical experiment simulation research, especially the experimental research on outcrop rock samples is less. In this paper, by carrying out...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-519
... and Environmental Science 861 (2021) 052111 doi:10.1088/1755-1315/861/5/052111 distribution curve. 2. Engineering background 2.1.Experimental materials and procedures The three soil samples used in this experiment are the silty clay in Beijing, the red clay in Shaanxi and the mudstone (mudstone-hard soil...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-626
... sharply. The prediction was proven by the experimental result. Vertical cracks have not been found on the PZD-3 column. In the final stage of the experiment, very fine vertical cracks are found on the PZD-4 column. 7. Design recommendation for eccentric beam-column joint with haunch beams Experimental...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-633
... on the surface of soil shown as figure 3. More specific model experimental design and procedures has been addressed in details in our previously published paper [14]. To find out the water migration and deformation characteristics of composite strata under seepage, two experiments with seepage velocity of 0.5 m...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-630
... vibration safety control. 2. Blasting experiments at Baihetan Hydropower Station 2.1. Experimental design Baihetan Hydropower Station is located in the lower reaches of the Jinsha River. It is the second step of the four cascade hydropower stations, including Wudongde, Baihetan, Xiluodu, and Xiangjiaba...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-100
.... The following is the parameters of one fracturing experiment : Table 3.1. Setting of experimental parameters. Number 01 Natural fracture density 9% In-situ stress/MPa 20/15/11 Difference between maximum and minimum in-situ stress/MPa 4 Delivery capacity 10ml/min Viscosity/ mPa s 10 The experimental pressure...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-116
... the cartridge heater, and several acceleration transducers were installed on the end faces of the coal block to detect AE events. Figure 1 shows the experimental setup of the coal heating experiment. Tables 1 and 2 show the industrial and elemental analysis values of the coal and mechanical properties...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-095
.... Experimental phenomenon of test A Experimental phenomenon Front view Side view Rainfall was 0 triggered and the experiment started. Tiny cracks on the 30 back of the slope and slope creep were observed. Small cracks on the back of the slope were observed and 70 the sliding deformation of the slope was 1.0 2.0...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-149
... vibration amplification of high rock slope As the full size experiment is very expensive and time-consuming, and the working condition of experiment is limited because of the environment. On the other hand, numerical method, derived from sound mechanical principles and validated against experimental data...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-163
... of power supply. Another very important issue is how to monitor displacement and additional parameters such as acoustic emissions, temperature and humidity during experiments for long durations. The Rock Mechanics Laboratory of the University of the Ryukyus has recently improved their experimental...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-200
... experimental stress conditions, showing an apparent correlation with fracture angles. The acoustic wave velocity increases linearly with the stresses, and the shear wave velocity is strongly affected by fracture angle and anisotropic effective stresses. The permeabilities decrease exponentially and show...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-197
... of rockfill through indoor large-scale uniaxial consolidation experiment and triaxial shear experiment. The experimental results showed that the breakage rate of particles increases continuously and tends to be stable with the increase of confining pressure, and the relationship between them could...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-168
... relationship was both observed between the creep modulus and hardness, Young's modulus for deep Longmaxi shale. The Burgers creep model showed good agreement with the experimental data. The creep behavior of Longmaxi shale exhibited anisotropy, and the effect of drilling fluids could aggravate the creep...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-193
.... Experimental program 2.1. Raw materials and sample preparation The similar materials of engineering rock mass are composed of aggregate, binder, and regulator. In this experiment, barite powder and quartz sand were used as the main aggregates, gypsum powder and water were used as binders, and washing liquid...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-398
... remains speculative. Then, we will discuss the results of some recent experiments which exploit new technical approaches to overcome the main limitations of the previous studies. The experimental approach, together with field studies of the geometry and architecture of exhumed faults and modelling...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-379
... and Environmental Science 861 (2021) 062080 doi:10.1088/1755-1315/861/6/062080 Figure 3.Triaxial mechanical testing machine and acoustic acquisition system. In this paper, the following experimental scheme is designed for the complex stress environment of shale, and the indoor triaxial mechanics experiment...

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