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Research on Direction and Location for Danger Prediction of Coal or Rock Dynamic Disaster

Xiao Hohgfei,He Xueqiu,Feng Tao,Wang Enyuan

Strategic Study of CAE 2005, Volume 7, Issue 11,   Pages 81-86

Abstract: use the non-touch electromagnetic emission (EME) method to better forecast or predict the danger of coalor rock dynamic disaster such as coal or gas outburst, rock or coal outburst and so on, the directionexcavation, the monitoring antenna should be laid at the middle height of tunnel and faced with the coalthat it is feasible to study the direction and location of dangerous areas in predicting the danger of coalor rock dynamic disaster by means of the coupling between EME and stress.

Keywords： rock or coal dynamic disaster     danger prediction     direction and location     deformation and fracture of coalor rock     couples between EME and stress     electromagnetic emission (EME)    

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Basic problems for dynamic deformation and fracture of deep rock mass

Li Jie,Wang Mingyang,Zhang Ning,Fan Pengxian

Strategic Study of CAE 2013, Volume 15, Issue 5,   Pages 71-79

Abstract: The difficulty lies in how to describe the rock mass properties in large dynamic deformation and failuredamage process(time effect, fracture description and so on) and characteristic scientific phenomena(To study on the deformation and failure mechanism of deep rock mass, the concept of time and space mustTo reveal the real deformation and failure process at present, we must continue to study within the frameworkcharacteristics of plastic flow and failure process, and reasonable means must be adopted to describe the fracture

Keywords： deep rock mass     dynamic fracture     time effect     damage fracture     rock burst     zonal disintegration    

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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: present an overview of the most popular state-of-the-art computational methods available for modelling fracturein rock.in rock mechanics 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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Technology of Coal-Rock Mass Hydraulic Fracture Weakeningand Its Development

Huang Bingxiang,Deng Guangzhe,Liu Changyou

Strategic Study of CAE 2007, Volume 9, Issue 4,   Pages 83-88

Abstract:

Technologic problems of top coal recovery ratio, rock burst, coal spontaneouscombustion and gas accumulation induced by hard top-coal or roof's fall in coal mining were introducedCurrent research and development trend of hydraulic fracture weakening for hard top-coal or roof wasanalyzed, including the law of crack expanding induced by hydraulic fracture in rock mass, mescoscopicstructure alteration of cracked rock mass by seepage pressure and its macroscopic mechanics response

Keywords： hard top-coal(roof)     hydraulic fracture     crack expanding     mescoscopic structure    

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A continuous/discontinuous deformation analysis (CDDA) method based on deformable blocks for fracture

Yongchang CAI, Hehua ZHU, Xiaoying ZHUANG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 369-378 doi: 10.1007/s11709-013-0222-x

Abstract: In the framework of finite element meshes, a novel continuous/discontinuous deformation analysis (CDDAThe CDDA is particularly suitable for modeling the fracture propagation because the switch from continuousdeformation analysis to discontinuous deformation analysis is natural and convenient without additional

Keywords： fracture     crack     propagation     deformable block     continuous/discontinuous deformation analysis (CDDA)    

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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 sub-block DDA method to simulate fracture problems is used.the expanding borehole walls and induced connected fracture surfaces around the boreholes., 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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Influence of soft rock-fill material as dam embankment with central bituminous concrete membrane

Peter TSCHERNUTTER

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1,   Pages 63-70 doi: 10.1007/s11709-010-0016-3

Abstract: demonstrates the difficulties in determining the relevant material parameters for a valuation of the deformationLaboratory as well as field tests on solid rock-fill material were performed before the beginning ofDuring the construction the properties of the available rock-fill changed from solid to soft materials

Keywords： embankment dam     bituminous concrete membrane     rock-fill material properties     deformation behavior    

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A Forecasting Method for Tunnel Surrounding Rock Deformation Using RBF Neural Networks

Zhang Junyan,Feng Shouzhong,Liu Donghai

Strategic Study of CAE 2005, Volume 7, Issue 10,   Pages 87-90

Abstract: Owing to the difficulty of traditional multi-variable regression methods to represent the surrounding rockdeformation curve with inflexion points, a method for forecasting tunnel surrounding rock deformationThis method not only can be utilized to approximate the complex deformation curves, but also has higher

Keywords： RBF neural networks     tunnel construction     surrounding rock deformation     forecasting    

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Asymmetric deformation mechanism in deep soft rock tunnel and controlling countermeasures in Datun Mine

Fu Qingguo and Zou Chaoyang

Strategic Study of CAE 2011, Volume 13, Issue 11,   Pages 102-106

Abstract: investigation and analysis of the engineering geology in Kongzhuang Mine and the laboratory experiments of rockcharacteristics of surrounding rock significantly, analysis stress distribution law when the roadwayThe results of theoretical study show that the asymmetric deformation is controlled by centralized stressfrom coal pillar in upper goaf.characteristics of surrounding rock in Kongzhuang Mine.

Keywords： deep     soft rock tunnel     asymmetric deformation     controlling countermeasures    

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Measurement of dynamic fracture toughness and failure behavior for explosive mock materials

Pengwan CHEN, Zhongbin ZHOU, Shaopeng MA, Qinwei MA, Fenglei HUANG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 292-295 doi: 10.1007/s11465-011-0237-8

Abstract: A high-speed camera was used to capture the deformation and fracture process of the specimen in situ.Results show that the method of combined DIC and SHPB is effective to study the dynamic deformation andfracture behavior of explosive simulants.The fracture toughness of the specimen was preliminary measured.

Keywords： correlation     polymer bonded explosive simulant     split Hopkinson pressure bar (SHPB)     semicircular bending test     deformation     fracture toughness    

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A toughness based deformation limit for X- and K-joints under brace axial tension

Bo GU,Xudong QIAN,Aziz AHMED

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 3,   Pages 345-362 doi: 10.1007/s11709-016-0333-2

Abstract: This study reports a deformation limit for the initiation of ductile fracture failure in fatigue-crackedfatigue crack at the hot-spot location in the tubular joint reaches the material fracture toughnessmeasured from standard fracture specimens.demonstrates the conservative nature of the proposed deformation limit.deformation limits for intact X- and K-joints under brace axial loads.

Keywords： circular hollow section (CHS)     tubular joint     fracture failure     deformation limit     J-integral    

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RBF-ANN-Based forecast method of transmutation of wall rock on multi-arch tunne

Xiao Zhiwang,Zhong Denghua

Strategic Study of CAE 2008, Volume 10, Issue 7,   Pages 77-81

Abstract:

The key of forecasting transmutation of wall rock correctly is to constructcharacteristics of feed forward neural network of radial basis function to construct the forecast model of deformationof wall rock in multi-arch tunnel and cllso uses Matlab tool to solve the optimal problem.

Keywords： multi-arch tunnel     deformation of wall rock     deformation forecast     radial basis function (RBF)     artificial    

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Study on Cumulalive Energy Effect in Directional Fracture Controlled Blasting in Rock

Luo Yong,Shen Zhaowu

Strategic Study of CAE 2006, Volume 8, Issue 6,   Pages 78-82

Abstract: problems of stone exploitation, the mechanism of crack initiation and its expansion of directional fracturecontrolled blasting with linear cavity effect cutter in rock were roughly studied based on the theoriesof cumulative energy effect, mechanics of explosive and rock fracture mechanics, then the blasting parametersModel test and field test suggest that the directional fracture controlled blasting with linear cavityeffect cutter is a good means in excavating tunnels or cutting rock.

Keywords： cumulative energy effect     directional fracture controlled blasting     model test     liner     fracture    

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Horizontal effects in fracturing operation of coal bed methane in Qinshui,Shanxi Province

Li Mengxi,Zhang Cong

Strategic Study of CAE 2012, Volume 14, Issue 4,   Pages 16-19

Abstract:

This paper describes horizontal effects of CBM (coal bed methane)fracturing

Keywords： coal bed methane     fracture     hydraulic fracturing    

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Analysis on damage causes of built-in corridor in core rock-fill dam on thick overburden: A case study

Jia’ao YU; Zhenzhong SHEN; Zhangxin HUANG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6,   Pages 762-780 doi: 10.1007/s11709-022-0847-8

Abstract: The stress state of the built-in corridor in core rock-fill dam on thick overburden is extremely complexThe purpose of this paper was to investigate the effect of thick overburden on the stress and deformationof the built-in corridor in a rock-fill dam, and ascertain the damage causes of the corridor.

Keywords： thick overburden     built-in corridor     stress     deformation     causes for damage     concrete damaged plasticity    

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Title Author Date Type Operation

Research on Direction and Location for Danger Prediction of Coal or Rock Dynamic Disaster

Xiao Hohgfei,He Xueqiu,Feng Tao,Wang Enyuan

Journal Article

Basic problems for dynamic deformation and fracture of deep rock mass

Li Jie,Wang Mingyang,Zhang Ning,Fan Pengxian

Journal Article

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

Ali JENABIDEHKORDI

Journal Article

Technology of Coal-Rock Mass Hydraulic Fracture Weakeningand Its Development

Huang Bingxiang,Deng Guangzhe,Liu Changyou

Journal Article

A continuous/discontinuous deformation analysis (CDDA) method based on deformable blocks for fracture

Yongchang CAI, Hehua ZHU, Xiaoying ZHUANG

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

Influence of soft rock-fill material as dam embankment with central bituminous concrete membrane

Peter TSCHERNUTTER

Journal Article

A Forecasting Method for Tunnel Surrounding Rock Deformation Using RBF Neural Networks

Zhang Junyan,Feng Shouzhong,Liu Donghai

Journal Article

Asymmetric deformation mechanism in deep soft rock tunnel and controlling countermeasures in Datun Mine

Fu Qingguo and Zou Chaoyang

Journal Article

Measurement of dynamic fracture toughness and failure behavior for explosive mock materials

Pengwan CHEN, Zhongbin ZHOU, Shaopeng MA, Qinwei MA, Fenglei HUANG

Journal Article

A toughness based deformation limit for X- and K-joints under brace axial tension

Bo GU,Xudong QIAN,Aziz AHMED

Journal Article

RBF-ANN-Based forecast method of transmutation of wall rock on multi-arch tunne

Xiao Zhiwang,Zhong Denghua

Journal Article

Study on Cumulalive Energy Effect in Directional Fracture Controlled Blasting in Rock

Luo Yong,Shen Zhaowu

Journal Article

Horizontal effects in fracturing operation of coal bed methane in Qinshui,Shanxi Province

Li Mengxi,Zhang Cong

Journal Article

Analysis on damage causes of built-in corridor in core rock-fill dam on thick overburden: A case study

Jia’ao YU; Zhenzhong SHEN; Zhangxin HUANG

Journal Article