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  • Department of geomaterials
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• Services

• In-Situ stress measurement
  Hydrofracturing of borehole walls (dia 76mm, decline boreholes, up to 40 m)
  Application of hydraulic loading to a selected isolated fracture in the borehole (HTPF)
  Determination of 3D stress state in the rock massive (RM) at the end of the borehole (dia 76mm, upholes, up to 25 m) – relief method using strain gauge Compact Conical Borehole Overcoring (CCBO)
  Monitoring of changes of the stress state in the RM at the end of the borehole (dia 76mm, upholes, up to 25 m) - CCBM method (Compact Conical Borehole Monitoring), manual reading or remote data transfer (monitoring in real time)
  Monitoring of loading of strain gauge bolts
  Repeated convergence measurements in underground spaces to determine the stress state of rock mass during construction of underground structures
  
  
• In-situ deformation measurements of surface or underground openings
  One-off and periodic measurements of levelling and slope movements
  One-off and periodic application of 3D laser scanning for shape documentation and monitoring of spatiotemporal changes in the shape of the areas and objects of interest
  
  
• Comprehensive geotechnical assessment of the rock mass
  Rock mass quality assessment due to engineers classification systems (RQD, RMR, Q), structural mapping
  Determination of specific properties of the rock mass in-situ (for use for specific purposes of the underground space)
  Characterization and evaluation of EDZ (Excavation Damage Zone) properties around underground openings and structures, etc.
  Application of video logging, OBI (OPTV) and ABI (HiRAT) methods in down boreholes and their comprehensive interpretation in the evaluation of the structure of rock mass
  Determination of basic rock mass properties in downhole boreholes (dia 76mm, up to 10 m) in-situ using a GoodmanJack drill press
  
  
• Testing the load capacity of bolts installed in rock mass, tensile tests of bolts
  
• Laboratory testing (in collaboration with the Department of geomaterials)
  Determination of physical and thermal properties of rocks (specific and bulk density, ultrasonic wave velocity, water absorption capacity, total and open porosity, thermal conductivity, thermal capacity, hydraulic conductivity, gas permeability)
  Determination of mechanical and deformation properties of rocks (uniaxial compressive strength, deformation and elasticity (Young’s) moduli at standard and cyclic loading, Poisson´s ratio, compressive strength under the triaxial state of stress, flexural strength, splitting tensile strength)
  
  
• 3D structural image and 3D analysis of rocks and materials using X-ray CT
  Shape characteristics, 3D distribution and nature components, inhomogeneities, pore space and fractures, discontinuities analysis, comparison of planned and actual geometric characteristics of the object of interest, ..
  
  
• Seismological measurements - purposeful measurements of seismic background and technical seismicity at specific locations
  
• Expert consultations and expertise
  Expert evaluation of the behaviour of rock mass from the geotechnical/geomechanical point of view and safety
  Risk assessment associated with geomechanical phenomenons induced by current and past anthropogenic activities in underground (induced seismicity, rockbursts, surface deformation, subsidence/uplifts, issues related to the behaviour of the area after mines closure)
  Mathematical modelling of complex geomechanical situations in commercial programs FLAC 3D, Phase, including interpretation of results and proposed solutions
  Numerical modelling and inverse analysis using the finite element method - Midas GTS NX software
  
  

All services are offered and performed with high erudition and professional quality. The services offered are of a research nature and are based on the research focus of the Institute, sometimes with the need for operative modification of procedures according to the needs of the research projects being carried out. For this reason, the procedures do not meet the de jure criteria of formal certifications and are not covered by ISO 900x, etc.