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检索条件"任意字段=Rock Characterisation,Modelling and Engineering Design Methods——The 3rd ISRM SINOROCK Symposium"

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引用

rock characterisation,modelling and engineering design methods——the 3rd isrm sinorock symposium

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Study on simulation test technology of rock landslide pregnant and sliding mechanism

引用

rock characterisation,modelling and engineering design methods——the 3rd isrm sinorock symposium

作者： Xianchun Ma State Key Laboratory of Hydraulics and Mountain River Engineering College of Water Resources and HydropowerSichuan University Southwest Research Institute CO. Ltd of CREC

ISBN: (纸本)9781138000575

The pregnant and sliding mechanism of rock landslides was firstly obtained,comparative analysis of modern typical rock landslides ***,the failure mechanism of rock landslides was simulated selected a typical rocky bedding landslide as prototype,which damaged mainly by goundwater *** test was to maintain the true latent slip surface and seize the main factors causing the *** stress magnitude,direction and distribution was basically the same with the prototype in the ***,the prototype landslide hydraulic start critical value was calculated,in accordance with the easily slip over dip slope stability model and its hydraulic start value *** rock mechanics parameters and structural parameters of the prototype rock landslide was obtained from the inversion *** simulation test results show that the experimental critical values was coincide with the theoretical critical values,and verify the correctness of the test method.

关键词： Study on simulation test technology of rock landslide pregnant and sliding mechanism simulation

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Applying the observational approach for tunnel design

引用

rock characterisation,modelling and engineering design methods——the 3rd isrm sinorock symposium

作者： Juan M.Davila Mendez Alexander Kluckner Wulf Schubert Institute for Rock Mechanics and Tunnelling Graz University of TechnologyAustria

ISBN: (纸本)9781138000575

The inherent uncertainties in the ground model and influencing factors,in most cases,do not allow a reliable direct design of a *** tunnel design methods do not allow proofing stability or serviceability,thus are not acceptable according to common understanding. To allow for construction of safe and economical tunnels,the uncertainties have to be dealt with by observing the behaviour of the structure,and adjust construction measures to the real ground conditions and behaviours ("observational method"). After characterizing the ground,potential hazards are identified,the possible range of behaviours is assessed and appropriate construction measures to the expected behaviours are assigned.A monitoring plan needs to be established together with a safety management plan including contingency measures for inacceptable predicted behaviour deviations. The paper with the help of a few worked examples illustrates the influence of the rock mass structure and fault zones on the system behaviour.

关键词： Applying the observational approach for tunnel design

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Analysis on damage characteristic and depth of surrounding rock in JinpingⅡdeep buried tunnel

引用

rock characterisation,modelling and engineering design methods——the 3rd isrm sinorock symposium

作者： Chunsheng Zhang Ning Liu Xumin Wu HydroChina Huadong Engineering Corporation

ISBN: (纸本)9781138000575;1138000574

High buried depth of JinpingⅡtunnel lead to sharp contradiction between stress and rock mass *** damage zone existing in surrounding rock has important impact on both the tunnel stability and supporting *** understand the damage zone characteristic and damage degree can be used to provide solid and strong basis for supporting optimization *** on reorganization on the triable mechanics behavior and damage zone characteristics,establish the research method about deep buried mable in JinpingⅡ*** to the damage characteristic difference between classⅡand classⅢmarble,use continuous mechanics method and discontinuous mechanics method to study the damage zone,and obtain the damage zone depth and distribution *** research result can be directly used to guide anchor length optimization design.

关键词： Analysis on damage characteristic and depth of surrounding rock in Jinping deep buried tunnel

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rock mass characterization for landslide susceptibility modeling in mountainous environment

引用

rock characterisation,modelling and engineering design methods——the 3rd isrm sinorock symposium

作者： V.K.Sharma Geological Survey of India Central RegionSeminary HillsNagpurIndia

ISBN: (纸本)9781138000575

The present papers deals with in situ characterization of rock formations as per Schmidt Rebound Hammer classification values(R) and portrays a model for spatial susceptibility of landslides in mountainous terrain.A geotechnical classification of rock masses depending on the range of R-value has been proposed and a regional correlation with the structural features traversing in the area has been *** values have been utilized to estimate the geo-mechanical properties of in-situ rock to categorize the different lithological assemblages into geotechnical units of varying *** units assigned weightings of slope parameters,structure and bedding relations,land use and land cover etc and the terrain has been categorized into susceptibility classes such as very low,low,moderate,high and very high depending on the spatial probability of landslide occurrence highlighting relative severity of landslide hazard.

关键词： UCS rock mass characterization for landslide susceptibility modeling in mountainous environment

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Experimental study on the permeability evolution of granite during complete stress-strain process

引用

rock characterisation,modelling and engineering design methods——the 3rd isrm sinorock symposium

作者： C.P.Wang X.Y.Wang L.Chen J.Wang R.Su J.F.Liu Beijing Research Institute of Uranium Geology Sichuan University

ISBN: (纸本)9781138000575

The hydromechanical behavior of deep intact Beishan granite is investigated with MTS815 rock mechanics test *** the help of 3D acoustic monitoring system,a special attention is paid on the damage evolution process and its impact on the permeability of rock sample during triaxial compression *** experimental results indicated that the damage evolution has a significant influence on the permeability variation of *** the same confining pressure,a good accordance between the damage and permeability evolution tendency is noticed,which can be divided into three phases.

关键词： Experimental study on the permeability evolution of granite during complete stress-strain process

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Investigation about shut-in pressure in hydraulic fracturing

引用

rock characterisation,modelling and engineering design methods——the 3rd isrm sinorock symposium

作者： P.Asgharikalyani A.Lakirouhani University of Zanjan ZanjanIran

ISBN: (纸本)9781138000575

In a typical test of the hydraulic fracturing(HF) method,fluid is injected into a wellbore until the initial cracks around the wellbore begin to *** that,the injection is stopped and the fluid pressure starts to *** stage is called *** common graph of the HF test is the wellbore pressure versus time that is used for estimating the in-situ stresses.A significant point in this curve,which is associated with the minimum horizontal in-situ stress,is the shut-in *** this paper,a plane strain numerical model is used for simulating the injection and shut-in stages of hydraulic *** model considers wellbore effects, compressibility of injection system and fluid *** on numerical results,increasing of fluid viscosity decreases the duration of the shut-in stage and length of initial notch is ineffective in the shut-in pressure.

关键词： Investigation about shut-in pressure in hydraulic fracturing

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Research on stochastic model and stability analysis of soil-rock mixture slope based on sort judgment

引用

rock characterisation,modelling and engineering design methods——the 3rd isrm sinorock symposium

作者： R.Luo Y.W.Zeng D.X.Kong Y.Li Y.K.Wang School of civil engineering Wuhan University

ISBN: (纸本)9781138000575

Soil-rock mixture is different from conventional soil and rock *** is an obvious feature of soil-rock mixture and the material component is one of intrinsic factors to influence the stability of soil-rock mixture *** intervals are defined for sort judgment basing on material component of soil-rock *** each unit,sort judgment is dealt with by Monte Carlo method,and the corresponding value of the physico-mechanical parameter is given to unit of sort *** this means,material component proportions of numerical model are equal to that of real states of soil-rock mixture *** analysis of soil-rock mixture slope is taken by the strength reduction method and the influence of material components contents on stability of soil-rock mixture slope is researched by numerical *** results indicate that it is unsafety to calculate the factor of safety by use of homogeneous slope model.

关键词： Research on stochastic model and stability analysis of soil-rock mixture slope based on sort judgment

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Geotechnical engineering designs in mining

引用

rock characterisation,modelling and engineering design methods——the 3rd isrm sinorock symposium

作者： Tao Li TL Geotechnics and Mining Pty Ltd MelbourneAustralia

ISBN: (纸本)9781138000575

Mining has been moving towards large-scale,innovative and efficient mining methods,such as mega-pits with steep slopes and large and deep underground mines using block and panel caving *** author has had the good fortune to participate and witness the maturing of the rock Mechanics and Geotechnical engineering in theory and practice in the Australian mining industry through studying and working there since 1986,as a researcher and a *** inputs to both design and operation are critical to the success and efficiency as the materials involved in such undertakings,rock,soil,and water,are ever more complicated and uncertain despite the best effort to characterise ***,all Australian mining operations,large or small, have a resident rock mechanics or geotechncial engineer on site;and all mining projects have specialist rock mechanics/geotechnical engineers on staff as an integral part of the overall study *** paper attempts to discuss the practical aspects of geotechncial engineering in mining project design and *** actual cases,the critical roles played by geotechncial engineering are highlighted for mining operations and projects, in particular the three critical goals in a mining project:feasibility,constructability and operability.

关键词： Geotechnical engineering designs in mining

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The design and main construction technology of super-small-interval tunnels

引用

rock characterisation,modelling and engineering design methods——the 3rd isrm sinorock symposium

作者： Shihang Zhong China Academy of Railway Sciences

ISBN: (纸本)9781138000575

Parallel tunnels with super-small-interval means that the interval of two parallel tunnels is between 1/2-1/3 tunnel *** stress condition of surround rock is more disadvantageous compare with the tunnels normal and small-interval tunnel during the tunnels with super-small-interval is excavated,and the excavated tunnel and the rock pillar between two tunnels are easy to be destroyed,so special design and construction requirement are *** its cost is only half of multi-arch tunnel,excavation method is simpler and construction period is shorter,moreover,it can reduce the width of highway in mountain area and the cost of higher class road *** precise exploration before design and numerical simulation during design must be done to make sure the main danger which is easy to be destroyed,the reinforcement methods and the construction *** advantage of self-supporting ability of surround rock fully is the design idea,so the rock pillar between two tunnels is the most important reinforcement *** blasting is another *** ZhaoBaoShan tunnel locating in Zhenhai,Ningbo,Zhejiang,is a typical instance,which is a good book to show the design idea and construction technology.

关键词： The design and main construction technology of super-small-interval tunnels

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