{"text_format":"2","workbook":"xls","n_sheets":1,"sheets":["report2"],"not_rendered":{"charts":0,"images":0,"macros":0,"external_links":1,"defined_names":1,"comments":0,"pivot_tables":0},"unopened":[],"bounds":{"document_bytes":16777216,"sheet_cells":100000,"run_cost":"one","rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096},"cells_cut":0,"cells_raw":0,"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"report2","index":0,"n_rows":16,"n_cols":5,"rows_kept":16,"cut":false,"hidden":false,"merged":[[0,2,0,3],[0,4,0,5],[1,2,1,3],[1,4,1,5],[2,2,2,3],[3,2,3,3],[4,2,4,3],[5,2,5,3],[7,2,7,3],[8,2,8,3],[12,2,12,3]],"flags":["formulas_cached_only"]}
[null,"1.","Record Nr.",null,"UNINA9910777584603321"]
[null,null,"Titolo",null,"Stability, failure, and measurements of boreholes and other circular openings / / U.S. National Committee for Rock Mechanics, Geotechnical Board, Commission on Engineering and Technical Systems, National Research Council"]
[null,null,"Pubbl/distr/stampa",null,"Washington, DC : , : National Academy Press, , 1993"]
[null,null,"Descrizione fisica",null,"1 online resource (x, 92 pages) : illustrations"]
[null,null,"Disciplina",null,"622.24"]
[null,null,"Soggetti",null,"Borehole mining"]
[{"$nulls":4},"Boring"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","\"Panel on Borehole Stability.\""]
[{"$nulls":4},"Panel chairman: Jean-Claude Roegiers."]
[null,null,"Nota di contenuto",null,"\"\"Stability, Failure, and Measurements of Boreholes and Other Circular Openings\"\"; \"\"Copyright\"\"; \"\"Contents\"\"; \"\"EXECUTIVE SUMMARY\"\"; \"\"INTRODUCTION\"\"; \"\"FAILURE\"\"; \"\"ABNORMAL STABILITY\"\"; \"\"1 EXCAVATION, MAINTENANCE, AND PERFORMANCE\"\"; \"\"BEFORE THE EXCAVATION\"\"; \"\"DURING EXCAVATION\"\"; \"\"UNSUPPORTED OPENINGS\"\"; \"\"CHANGE IN STRESSES\"\"; \"\"CHANGE IN STRENGTH\"\"; \"\"DECREASE IN SUPPORT CAPACITY\"\"; \"\"SUPPORTED OPENINGS\"\"; \"\"HOLE COLLAPSE\"\"; \"\"INSUFFICIENT BONDING\"\"; \"\"FORMATION DAMAGE\"\"; \"\"LONG-TERM STABILITY\"\"; \"\"2 OBSERVATIONAL EVIDENCE\"\"; \"\"FIELD OBSERVATIONS\"\"; \"\"LABORATORY OBSERVATIONS\"\""]
[{"$nulls":4},"\"\"3 STABILITY ASSESSMENT\"\"\" \"CLOSURE MEASUREMENTS\"\"; \"\"GEOPHYSICAL MEASUREMENTS\"\"; \"\"IN-SITU STRESS CONDITIONS\"\"; \"\"CIVIL AND MINING ENGINEERING\"\"; \"\"4 ROCK-MASS ASSESSMENT\"\"; \"\"SCALE OF INVESTIGATION AND RESOLUTION\"\"; \"\"MECHANICAL PROPERTIES AND THE STABILITY OF THE OPENINGS\"\"; \"\"PRIMARY FACTORS AFFECTING THE REMOTE ASSESSMENT OF ROCK-MASS PROPERTIES\"\"; \"\"HIGH-RESOLUTION SURFACE SOUNDING\"\"; \"\"SEISMIC METHODS\"\"; \"\"ELECTRICAL RESISTIVITY SOUNDING\"\"; \"\"RADAR SOUNDING AND RADAR TOMOGRAPHY\"\"; \"\"ROCK-MASS EXPLORATION BY MEANS OF PILOT BOREHOLES\"\"; \"\"MEASUREMENT-WHILE-DRILLING (MWD)\"\""]
[{"$nulls":4},"\"\"5 ANALYTICAL AND NUMERICAL MODELING\"\" \"\"UNSUPPORTED OPENINGS\"\"; \"\"ELASTIC ANALYSIS\"\"; \"\"INELASTIC ANALYSIS\"\"; "]
[{"$nulls":4},"\"\"SIMPLIFIED BIFURCATION ANALYSIS\"\"; \"\"ISOTROPIC FAR-FIELD STRESSES\"\"; \"\"NUMERICAL ANALYSIS OF LOCALIZATION PHENOMENA IN DEEP BOREHOLES\"\"; \"\"NONLINEAR EFFECTS\"\"; \"\"TIME-DEPENDENT EFFECTS\"\"; \"\"SCALE EFFECTS\"\"; \"\"SUPPORTED OPENINGS\"\"; \"\"ELASTIC ANALYSIS\"\"; \"\"NONLINEAR OR TIME-DEPENDENT ANALYSIS\"\"; \"\"INTERSECTIONS\"\"; \"\"SLABBING AND EXFOLIATION\"\"; \"\"INFLUENCE OF PREEXISTING DISCONTINUITIES OR STRUCTURE\"\"; \"\"DISCRETE ELEMENT METHOD\"\"; \"\"BLOCK THEORY\"\"; \"\"DISCONTINUOUS DEFORMATION ANALYSIS\"\"; \"\"6 CONCLUSIONS\"\"; \"\"REFERENCES\"\""]