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Review and Prospect of Mechanics of Jointed Rock Masses and Its Applications

Xie Heping

Strategic Study of CAE 2003, Volume 5, Issue 3,   Pages 31-38

Abstract:

Mechanics of jointed rock masses is a new branch derived from mining engineering and engineering mechanicsAimed at the practical problems in mining engineering, this paper reviews the recent developments in mechanicsof rock masses and its applications, including damage mechanics of rock masses and its applications,and fractal theory and applications of mechanics of rock masses.Moreover, a development tendency of mechanics of rock masses, i. e.

Keywords： mechanics of jointed rock masses     recent development     prospect    

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Characterization on jointed rock masses based on PFC2D

Peitao WANG, Tianhong YANG, Qinglei YU, Honglei LIU, Penghai ZHANG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1,   Pages 32-38 doi: 10.1007/s11709-013-0187-9

Abstract: rock masses.Accurate characterization for discontinuities is important for investigate the stability of rock massesmasses are measured by ShapeMetriX3D measuring tool.In simulating the compression test of a jointed rock sample, the mechanical behavior and crack propagationThe results reveal that the failure mode and crack propagation of the jointed rock are dominated by the

Keywords： jointed rock masses     shape metrix3D     monte-carlo stochastic simulation method     PFC2D    

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Simulation of blast induced crater in jointed rock mass by discontinuous deformation analysis method

Youjun NING, Xinmei AN, Jun YANG, Guowei MA,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2,   Pages 223-232 doi: 10.1007/s11709-010-0022-5

Abstract: Rock blasting is a dynamic process accompanied with the propagations of shock waves and the dispersionThis paper adopts the discontinuous deformation analysis (DDA) method to simulate the rock blasting processThe blasting process in jointed rock mass is simulated by application of the explosion gas pressure onThe whole process including the explosion gas dispersion, borehole expansion, rock mass failure and cast, and the formation of the final blasting piles in rock blasting are well reproduced numerically.

Keywords： blast crater     jointed rock mass     explosion gas pressure     discontinuous deformation analysis (DDA) method    

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Computational methods for fracture in rock: a review and recent advances

Ali JENABIDEHKORDI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 273-287 doi: 10.1007/s11709-018-0459-5

Abstract: overview of the most popular state-of-the-art computational methods available for modelling fracture in rockmethods which can be found elsewhere but particularly address their potential in modelling fracture in rockmechanics and geotechnical engineering.Furthermore, we also address ‘general’ difficulties that may arise for simulating fracture in rock andfractured rock.

Keywords： numerical modelling     method development     rock mechanics     fractured rock     rock fracturing    

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Some Challenges of Deep Mining Review

Charles Fairhurst

Engineering 2017, Volume 3, Issue 4,   Pages 527-537 doi: 10.1016/J.ENG.2017.04.017

Abstract: This places increased focus on “ground control” and on rock mechanics to define the depthAlthough significant efforts have been made since the end of World War II to apply mechanics to minethe deformational behavior of rock masses that are anisotropic and discontinuous—attributes thatand founder of the International Society for Rock Mechanics (ISRM), in 1966.For the first time, mining—and rock engineering—will have its own mechanics-based “

Keywords： Deep mining     Rock discontinuities     Synthetic rock mass     Mineral resources     Rock mechanics    

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Theoretical and Technological Challenges of Deep Underground Energy Storage in China Review

Chunhe Yang, Tongtao Wang, Haisheng Chen

Engineering 2023, Volume 25, Issue 6,   Pages 168-181 doi: 10.1016/j.eng.2022.06.021

Abstract: Rock salt formations are ideal geological media for large-scale energy storage, and China is rich insalt rock resources and has a major shortage of energy storage space.Compared with the salt domes in other countries, the salt rock formations in China are typical lacustrinechallenges, including: ① developing a multiscale progressive failure and characterization method for the rock

Keywords： Energy reserves     Deep underground energy storage     Bedded rock salt     Salt cavern     Rock mechanics    

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Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 623-642 doi: 10.1007/s11709-021-0726-8

Abstract: reduction methods were combined to simulate a progressive failure in notched composite plates using a macro mechanics

Keywords： progressive failure     notched composite plate     Hashin failure criterion     macro mechanics approach     finite    

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Dvelopment of Aeronautics and Astronautics With Mechanics

Chen Shilu

Strategic Study of CAE 2003, Volume 5, Issue 3,   Pages 25-26

Abstract:

This paper discusses the development of aeronautics and astronautics with mechanics, reveals the developmentof new branches of interconnected sciences in mechanics, describes the relations of flight mechanicswith aerodynamics, structure mechanics, general mechanics and automatic control, and introduces thenew branch of flight mechanics—flight dynamics of elastic vehicle.

Keywords： aerodynamics     structure mechanics     general mechanics     automatic control     flight mechanics     flight dynamics    

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Creep life assessment of aero-engine recuperator based on continuum damage mechanics approach

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0702-6

Abstract: The creep life of an aeroengine recuperator is investigated in terms of continuum damage mechanics by

Keywords： creep     life assessment     brazed joint     continuum damage mechanics     aeroengine recuperator    

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Investigation on the freeze-thaw damage to the jointed plain concrete pavement under different climate

Shuaicheng GUO, Qingli DAI, Jacob HILLER

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 2,   Pages 227-238 doi: 10.1007/s11709-017-0426-6

Abstract: Freeze-thaw damage is one of the main threats to the long time performance of the concrete pavement in the cold regions. This project aims to evaluate the influence of the freeze-thaw damages on pavement distresses under different climate conditions. Based on the Long-Term Pavement Performance (LTPP) data base, the freeze-thaw damage generated by four different kinds of climate conditions are considered in this project: wet-freeze, wet-non freeze, dry-freeze and dry-non freeze. The amount of the transverse crack and the joint spalling, along with the International Roughness Index ( ) are compared among the test sections located in these four different climate conditions. The back calculation with the Falling Weight Deflectometer (FWD) test results based on the ERES and the Estimation of Concrete Pavement Parameters (ECOPP) methods are conducted to obtain concrete slab elastic modulus and the subgrade -value. These two parameters both decrease with service time under freeze condition. Finally, MEPDG simulation is conducted to simulate the development with service year. These results showed the reasonable freeze-thaw damage development with pavement service life and under different climate conditions.

Keywords： LTPP     elastic modulus     k-value     IRI     MEPDG    

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Philadelphia chromosome-positive acute myeloid leukemia with masses and osteolytic lesions: finding of

Zhan Su, Fengyu Wu, Weiyu Hu, Xiaodan Liu, Shaoling Wu, Xianqi Feng, Zhongguang Cui, Jie Yang, Zhenguang Wang, Hongzai Guan, Hongguo Zhao, Wei Wang, Chunting Zhao, Jun Peng

Frontiers of Medicine 2017, Volume 11, Issue 3,   Pages 440-444 doi: 10.1007/s11684-017-0523-x

Abstract:

Philadelphia chromosome-positive acute myeloid leukemia is controversial and difficult to distinguish from the blast phase of chronic myeloid leukemia. As a myeloid neoplasm, rare cases of this leukemia manifest multiple soft-tissue tumors or bone lytic lesions. In this paper, we describe a 49-year-old male patient who had an abrupt onset with sharp chest pain, fever, fatigue, emaciation, and splenomegaly. 18F-fluoro-deoxy-glucose positron emission tomography/computed tomography (18F-FDG PET/CT) result showed diffuse and uneven hypermetabolic lesions in the bone marrow with peripheral bone marrow expansion, multiple soft tissue neoplasms with high 18F-FDG uptake, and lytic bone lesions. Bone marrow smear and biopsy detected aberrant blast cells expressing myeloid rather than lymphoid immunophenotype marker. For the existence of Philadelphia chromosome and BCR-ABL1 fusion gene together with complex chromosome abnormalities, a diagnosis of Philadelphia-positive acute myeloid leukemia was made, although the type (de novo or blast crisis) remained unclear.

Keywords： Philadelphia chromosome     acute myeloid leukemia     mass     osteolysis     positron emission tomography    

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Study of the mechanics of progressive collapse of FPB isolated beam-pier substructures

Jingcai ZHANG; Yong DING; Xinchun GUAN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6,   Pages 718-728 doi: 10.1007/s11709-022-0815-3

Abstract: The horizontal stiffness of the isolated layer is reduced substantially by a friction pendulum bearing (FPB) toprotectthe structure from potential damages caused by earthquakes. However, horizontal stiffness is essential to progressive collapse resistance of structures. This paper presents a simplified model to assess the progressive collapse response of beam-pier substructure isolated by FPB. Progressive collapse resistance by flexural action of the beam and additional resistance owing to the horizontal restraining force was achieved. The influences of the equivalent radius and friction coefficient of the FPB, the applied axial force on the FPB, and span-depth ratio of the beam on the additional resistance were investigated. Simulations were conducted to verify the proposed model. The results show that progressive collapse resistance provided by horizontal restraining can be reduced as large as 46% and 88% during compressive arching action (CAA) and catenary action (CA), respectively. The equivalent radius of the FPB shows limited effect on the progressive collapse response of FPB isolated structures, but friction coefficient and applied axial force, as well as depth ratio of the beam, show significant influences on the additional progressive collapse resistance capacity. Finite element method (FEM) results are in good agreement with the result obtained by the proposed method.

Keywords： friction pendulum bearing     progressive collapse     horizontal stiffness     compressive arching action     catenary action    

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Advances in structural mechanics of Chinese ancient architectures

YU Maohong, ODA Yoshiya, FANG Dongping, ZHAO Junhai

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 1,   Pages 1-25 doi: 10.1007/s11709-008-0002-1

Abstract: The researches on the structural mechanics of ancient architectures show the different aspects of structureand mechanics.Systematical studies on the structural mechanics of ancient architectures have been carried out at Xihave in fact problems of structural strength and stability; the need for further studies on structural mechanics
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Generalized Plastic Mechanics and Its Application

Zheng Yingren,Kong Liang

Strategic Study of CAE 2005, Volume 7, Issue 11,   Pages 21-36

Abstract: development of geotechnical plasticity is reviewed and some problems of applying the classic plastic mechanicsBy giving up the three hypotheses, a generalized plastic potential theory can be obtained from solid mechanicsdirectly, and then the traditional plastic mechanics can be changed to a more generalized plastic mechanics, namely generalized plastic mechanics (GPM).

Keywords： geotechnical plastic mechanics     generalized plastic mechanics     plastic potential     yield surface     constitutive    

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A computational toolbox for molecular property prediction based on quantum mechanics and quantitative

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 152-167 doi: 10.1007/s11705-021-2060-z

Abstract: In this paper, a framework combining quantum mechanics and quantitative structure-property relationship, a database is created for collections of basic molecular information; in the second step, quantum mechanics-basedcalculations are performed to predict quantum mechanics-based/derived molecular properties (pseudo experimental

Keywords： molecular property     quantum mechanics     quantitative structure-property relationship     heat of reaction    

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Title Author Date Type Operation

Review and Prospect of Mechanics of Jointed Rock Masses and Its Applications

Xie Heping

Journal Article

Characterization on jointed rock masses based on PFC2D

Peitao WANG, Tianhong YANG, Qinglei YU, Honglei LIU, Penghai ZHANG

Journal Article

Simulation of blast induced crater in jointed rock mass by discontinuous deformation analysis method

Youjun NING, Xinmei AN, Jun YANG, Guowei MA,

Journal Article

Computational methods for fracture in rock: a review and recent advances

Ali JENABIDEHKORDI

Journal Article

Some Challenges of Deep Mining

Charles Fairhurst

Journal Article

Theoretical and Technological Challenges of Deep Underground Energy Storage in China

Chunhe Yang, Tongtao Wang, Haisheng Chen

Journal Article

Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Journal Article

Dvelopment of Aeronautics and Astronautics With Mechanics

Chen Shilu

Journal Article

Creep life assessment of aero-engine recuperator based on continuum damage mechanics approach

Journal Article

Investigation on the freeze-thaw damage to the jointed plain concrete pavement under different climate

Shuaicheng GUO, Qingli DAI, Jacob HILLER

Journal Article

Philadelphia chromosome-positive acute myeloid leukemia with masses and osteolytic lesions: finding of

Zhan Su, Fengyu Wu, Weiyu Hu, Xiaodan Liu, Shaoling Wu, Xianqi Feng, Zhongguang Cui, Jie Yang, Zhenguang Wang, Hongzai Guan, Hongguo Zhao, Wei Wang, Chunting Zhao, Jun Peng

Journal Article

Study of the mechanics of progressive collapse of FPB isolated beam-pier substructures

Jingcai ZHANG; Yong DING; Xinchun GUAN

Journal Article

Advances in structural mechanics of Chinese ancient architectures

YU Maohong, ODA Yoshiya, FANG Dongping, ZHAO Junhai

Journal Article

Generalized Plastic Mechanics and Its Application

Zheng Yingren,Kong Liang

Journal Article

A computational toolbox for molecular property prediction based on quantum mechanics and quantitative

Journal Article