2019 Vol. 39, No. 8
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2019, 39(8): 081101.
doi: 10.11883/bzycj-2019-0286
Abstract:
In recent years, as the developing of hyper-velocity weapons, the research emphasis of penetration effects is shifting from high-velocity penetration to hyper-velocity penetration. With the increasing of impact velocity of projectiles, the penetratio...
In recent years, as the developing of hyper-velocity weapons, the research emphasis of penetration effects is shifting from high-velocity penetration to hyper-velocity penetration. With the increasing of impact velocity of projectiles, the penetratio...
2019, 39(8): 081102.
doi: 10.11883/bzycj-2018-0480
Abstract:
In this paper we investigated the interaction mechanism between blast stress waves and cracks, and examined the variation of the dynamic characteristics of prefabricated horizontal static crack and horizontal motion crack produced by a split-tube hol...
In this paper we investigated the interaction mechanism between blast stress waves and cracks, and examined the variation of the dynamic characteristics of prefabricated horizontal static crack and horizontal motion crack produced by a split-tube hol...
2019, 39(8): 081103.
doi: 10.11883/bzycj-2019-0191
Abstract:
As high elastic strain energy is stored in deep rock masses with high geo-stress, the initial equilibrium state in rock masses is broken as a result of excavation and explosion, thus forming the unbalanced force and energy field forms. The deformatio...
As high elastic strain energy is stored in deep rock masses with high geo-stress, the initial equilibrium state in rock masses is broken as a result of excavation and explosion, thus forming the unbalanced force and energy field forms. The deformatio...
2019, 39(8): 083101.
doi: 10.11883/bzycj-2019-0078
Abstract:
The dynamic microcrack growth has a great influence on the macroscopic dynamic mechanical properties of brittle rocks under dynamic compressive loadings. However, the relationships between dynamic microcrack growth and macroscopic dynamic mechanical ...
The dynamic microcrack growth has a great influence on the macroscopic dynamic mechanical properties of brittle rocks under dynamic compressive loadings. However, the relationships between dynamic microcrack growth and macroscopic dynamic mechanical ...
2019, 39(8): 083102.
doi: 10.11883/bzycj-2019-0164
Abstract:
The rock mass will bear the cyclic loading during the construction of underground engineering. Mechanical properties of the damaged rock mass under disturbance of cyclic loading are important for supporting capacity of the surrounding rock. Moreover,...
The rock mass will bear the cyclic loading during the construction of underground engineering. Mechanical properties of the damaged rock mass under disturbance of cyclic loading are important for supporting capacity of the surrounding rock. Moreover,...
2019, 39(8): 083103.
doi: 10.11883/bzycj-2019-0140
Abstract:
In order to use the measured particle velocities from spherical wave experiment to analyze the motion and deformation characteristics of medium under underground explosion, a new method for constructing the motion and deformation field for undergroun...
In order to use the measured particle velocities from spherical wave experiment to analyze the motion and deformation characteristics of medium under underground explosion, a new method for constructing the motion and deformation field for undergroun...
2019, 39(8): 083104.
doi: 10.11883/bzycj-2019-0169
Abstract:
The microscopic damage and dynamic mechanical properties of high-temperature granite after water cooling were studied through wave velocity test, nuclear magnetic resonance (NMR) test, split Hopkinson pressure bar (SHPB) impact test and scanning elec...
The microscopic damage and dynamic mechanical properties of high-temperature granite after water cooling were studied through wave velocity test, nuclear magnetic resonance (NMR) test, split Hopkinson pressure bar (SHPB) impact test and scanning elec...
2019, 39(8): 083105.
doi: 10.11883/bzycj-2019-0008
Abstract:
There are many cracks inside the rock mass. In this paper, taking a pair of parallel cracks as an example, we studied the effect of two parallel cracks on the main crack’s propagation behavior and investigated the relationship of the main crack’s ext...
There are many cracks inside the rock mass. In this paper, taking a pair of parallel cracks as an example, we studied the effect of two parallel cracks on the main crack’s propagation behavior and investigated the relationship of the main crack’s ext...
2019, 39(8): 083106.
doi: 10.11883/bzycj-2019-0187
Abstract:
The dynamic compressive strength characteristics and macroscopic failure modes of layered phyllite are carried out by the Split Hopkinson Pressure Bar. The micromorphology of fracture surface was obtained by 3D laser instrument, and the fractal geome...
The dynamic compressive strength characteristics and macroscopic failure modes of layered phyllite are carried out by the Split Hopkinson Pressure Bar. The micromorphology of fracture surface was obtained by 3D laser instrument, and the fractal geome...
2019, 39(8): 083107.
doi: 10.11883/bzycj-2018-0391
Abstract:
The non-penetrating fractured rock mass is the main form of rock mass in nature, and the geometric features of its fractures play a remarkable role in its strength and deformation. Its strain rate also has a significant rate dependence on its damage ...
The non-penetrating fractured rock mass is the main form of rock mass in nature, and the geometric features of its fractures play a remarkable role in its strength and deformation. Its strain rate also has a significant rate dependence on its damage ...
2019, 39(8): 083108.
doi: 10.11883/bzycj-2019-0044
Abstract:
Based on the theory of elastoplastic mechanics, the rock elastoplastic constitutive model considering hardening/softening behavior and strain rate effect is established with the uniform strength criterion as the yield criterion. Fortran language was ...
Based on the theory of elastoplastic mechanics, the rock elastoplastic constitutive model considering hardening/softening behavior and strain rate effect is established with the uniform strength criterion as the yield criterion. Fortran language was ...
2019, 39(8): 083301.
doi: 10.11883/bzycj-2019-0141
Abstract:
In this paper we carried out experiments using two-stage light gas gun with Gram-grade cylindrical tungsten alloy projectiles, impacting concrete targets at velocity from 1.82 km/s to 3.66 km/s ton investigate the cratering mechanism of concrete targ...
In this paper we carried out experiments using two-stage light gas gun with Gram-grade cylindrical tungsten alloy projectiles, impacting concrete targets at velocity from 1.82 km/s to 3.66 km/s ton investigate the cratering mechanism of concrete targ...
2019, 39(8): 084201.
doi: 10.11883/bzycj-2019-0154
Abstract:
To reduce the deviation of vibration signals effectively and improve the reliability of the data, the method of combining the ensemble empirical mode decomposition (EEMD) and the processing of high and low frequency is first applied to correct the ac...
To reduce the deviation of vibration signals effectively and improve the reliability of the data, the method of combining the ensemble empirical mode decomposition (EEMD) and the processing of high and low frequency is first applied to correct the ac...
2019, 39(8): 084202.
doi: 10.11883/bzycj-2019-0167
Abstract:
It is very important to monitor and evaluate the clandestine nuclear tests using the surface displacements such as subsidence craters induced by the underground nuclear explosion. Based on the similarity theory of the process of subsidence crater for...
It is very important to monitor and evaluate the clandestine nuclear tests using the surface displacements such as subsidence craters induced by the underground nuclear explosion. Based on the similarity theory of the process of subsidence crater for...
2019, 39(8): 085201.
doi: 10.11883/bzycj-2018-0280
Abstract:
In this paper, using polarization analysis, we characterized the seismic waves induced by the horizontal smooth blasting in a group of onsite blasting experiments, presenting interpretation of wave components and offering comparison of attenuation ch...
In this paper, using polarization analysis, we characterized the seismic waves induced by the horizontal smooth blasting in a group of onsite blasting experiments, presenting interpretation of wave components and offering comparison of attenuation ch...
2019, 39(8): 085202.
doi: 10.11883/bzycj-2018-0337
Abstract:
In the present study we found out about the optimum millisecond time for reducing vibration in hole-by-hole blasting, on the basis of an actual slope detonation work. At first we constructed a two-dimensional static model using ANSYS and determined t...
In the present study we found out about the optimum millisecond time for reducing vibration in hole-by-hole blasting, on the basis of an actual slope detonation work. At first we constructed a two-dimensional static model using ANSYS and determined t...
2019, 39(8): 085203.
doi: 10.11883/bzycj-2019-0142
Abstract:
It is helpful to blasting parameter design and blasting vibration safety evaluation to make clear the dependence of blasting vibration response on frequency and duration. The relationship between single-delay blasting vibration, multi-delay blasting ...
It is helpful to blasting parameter design and blasting vibration safety evaluation to make clear the dependence of blasting vibration response on frequency and duration. The relationship between single-delay blasting vibration, multi-delay blasting ...
