- Email: [email protected]
Aspects of circular tunnel design
129A
786o57 THB]~-DIMENSIONAL FE ANALYSIS OF A R0f~f AND PILLAR COAL MINE (A COMPARISON WITH EXI~RIMm~) Lar~land, R T In: Nt~nerical Methods in Geomechamics (Papers to 2nd International Conference, Blacksburg, Va, June 1976), V2, P802-820. Publ N o York, ASCE, 1976 786058 FINITE ~ N T ANALYSIS OF C~MENTED FILL EXPOSORES Meek, J L; Kirby, R W In: Numerical Methods in Geomechanlcs (Papers to 2nd International Conference, Blacksburg, Va, June 1976), V2, P901-916. Publ New York, ASCE, 1976 786059 HUMIDITY: A CYCLIC ~.'~'~'kc~IN COAL MINE ROOF STABILITY Stateham, R M; Radcliffe, D E US~M RI 8291 , 1978, 19P Climatic comditions were compared with roof fall occurrence from April l, 1972, to December 31, 1975. These comparisons indicated that humidity has a strong influence on roof fall occurrence rates. Cubic regression techniques were used to develop best fit curves. Statistical analysis of these c~rves indicated that both were sinusoidal and exhibited positive correlation with each other. The sine waves have a period of 1 year with maximum and minimum inflection points in August and February. Avail: USBM, 4800 Forbes Ave, Pittsburgh, Pa, 15213, USA 786060 SAFETY ASPECTS OF LONGWALL MINING IN THE ILLINOIS COAL BASIN Curth, E A USBM IC 8776, 1978, 37P Reports a trial programme of longwall mining 3 panels at the Old Ben no 24 mine, to demonstrate the applicability of the method, including rock mechanics aspects of design. Avail: USBM, 4800 Forbes Ave, Pittsburgh, Pa, 15213, USA 786061 DEVELOPING PREDICTING HylbeTt, USBM OFR
GEOLOGICAL STRUCTURAL CRITERIA FOR UNSTABLE MINE ROOF ROCKS D K 9-78, 15 July 1977, 249P
Reports an investigation of roof falls in roomand-pillar drift coal mines, sttrlying the Bailey Creek Mine and the Highsplint Mine in Harlan County, Ky. Techniques used included correlation with surface outcrops, structure contour and isopach maps, core analysis, and computer data analysis. Conclusions are drawn for roof falls in the mines studied. Avail: NTIS. Springfield, Va, 22161, USA (FB 276735/AS)
Tunnels 786062 GRIMWITH'S ROGUE HEADS FOR A BRIGHTER FUTURE Hayward, D New Civ Engr, N307, 24 Aug 1978, P14-15 Reviews progress in construction of the water outlet tunnel at the Grimwlth Reservoir in Yorkshire, where a layer of heavily broken shale
cr mudstone gave way two thirds of the way down the face to a relatively hard limestone. The need far constant face ard roof support necessitated abandoning the use of a roadheader and the tunnel is now being hard-dug within a shield, a mnall pilot tunnel being excavated ahead of the main drive.
786o63 CONTROLLING TUNNEL-LINING COSTS
- TIPS FOR OWNERS AND DESIGNERS Brierley, G S Civ Engng, NY, V48, NV, July 1978, P51-5B
A basic discussion of tunnelling ~roJects, including experience of designer, geotechnical investigations, lining design problems, liningground interaction, starhard design criteria, flexibility of specs and contracts. 786064 DRIVING WITH A FULL-FACE DIAPHRAGM McCanl, C; West, G Tunn Tunnlg, VI0, N6, 1978, P23-25 An investigation of three small diameter tunnels driven through soft, wet alluvial soils using a full-face diaphragm on a shield is described. Reasonable agreement was found between observed and calculated driving resistance. The importance of adequate site investigations to determine the depths and properties of strata is amphasised. 786065 TUNNELLING IN DIFFICULT GROUND Leeney, J G Tunn Tunnlg, VI0, N6, 1978~ P30-31 A symposium on tunnelling in difficult ground was held in Tokyo in May 1978 in conjunction with the fourth annual meeting of the International Tunnelling Association. This paper stummarises the 53 papers on hard rock and soft ground tunnelling presented, using the headings supports and rock stresses, geol~lysics and grouting, Japanese tunnel visits, and horizontal freezing tubes. 786066 ASPECTS OF CIRCULAR TUNNEL DESYGN Ebald, G S; Hammad, M E Turm Tunnlg, V10, N6, 1978, P59-63 Six methods of calculating the bending moments in the linings of circular tunnels are reviewed and compared. The influence of the lining rigidity and soil properties is considered. 786067 CONSVfHUCTION OF MOUNTAIN TUNNELS FOR THE BAYKAL AMUR RAILROAD (IN RUSSIAN) Omelianenko, N K Transp S~roit, NI, Jan 1978, P12-14 786068 PARAMETRIC STUDIES AS A DESIGN AID TN TUNNELING Kovari, K; Hagedorn, H; Fritz, P In: Numerical Methods in Geomechanics (Papers to 2nd International Conference, Blacksburg, Va, J~tne 1976 ), V2, F773-790. Publ New York, ASCE, 1976 786069 NUMERYCAL ANALYSIS OF THE MAXYMDM EARTH F R E S ~ ACTING ON TUNNEL LINING Sakurai, S; Yamamoto, Y In: Nt~nerical Methods in Geomeehanlcs (Papers to 2nd Internatior~l Conference, Blacksburg, Va, Jur~ 1976), V2, P821-833. Publ N o York, ASCE, 1976
786o57 THB]~-DIMENSIONAL FE ANALYSIS OF A R0f~f AND PILLAR COAL MINE (A COMPARISON WITH EXI~RIMm~) Lar~land, R T In: Nt~nerical Methods in Geomechamics (Papers to 2nd International Conference, Blacksburg, Va, June 1976), V2, P802-820. Publ N o York, ASCE, 1976 786058 FINITE ~ N T ANALYSIS OF C~MENTED FILL EXPOSORES Meek, J L; Kirby, R W In: Numerical Methods in Geomechanlcs (Papers to 2nd International Conference, Blacksburg, Va, June 1976), V2, P901-916. Publ New York, ASCE, 1976 786059 HUMIDITY: A CYCLIC ~.'~'~'kc~IN COAL MINE ROOF STABILITY Stateham, R M; Radcliffe, D E US~M RI 8291 , 1978, 19P Climatic comditions were compared with roof fall occurrence from April l, 1972, to December 31, 1975. These comparisons indicated that humidity has a strong influence on roof fall occurrence rates. Cubic regression techniques were used to develop best fit curves. Statistical analysis of these c~rves indicated that both were sinusoidal and exhibited positive correlation with each other. The sine waves have a period of 1 year with maximum and minimum inflection points in August and February. Avail: USBM, 4800 Forbes Ave, Pittsburgh, Pa, 15213, USA 786060 SAFETY ASPECTS OF LONGWALL MINING IN THE ILLINOIS COAL BASIN Curth, E A USBM IC 8776, 1978, 37P Reports a trial programme of longwall mining 3 panels at the Old Ben no 24 mine, to demonstrate the applicability of the method, including rock mechanics aspects of design. Avail: USBM, 4800 Forbes Ave, Pittsburgh, Pa, 15213, USA 786061 DEVELOPING PREDICTING HylbeTt, USBM OFR
GEOLOGICAL STRUCTURAL CRITERIA FOR UNSTABLE MINE ROOF ROCKS D K 9-78, 15 July 1977, 249P
Reports an investigation of roof falls in roomand-pillar drift coal mines, sttrlying the Bailey Creek Mine and the Highsplint Mine in Harlan County, Ky. Techniques used included correlation with surface outcrops, structure contour and isopach maps, core analysis, and computer data analysis. Conclusions are drawn for roof falls in the mines studied. Avail: NTIS. Springfield, Va, 22161, USA (FB 276735/AS)
Tunnels 786062 GRIMWITH'S ROGUE HEADS FOR A BRIGHTER FUTURE Hayward, D New Civ Engr, N307, 24 Aug 1978, P14-15 Reviews progress in construction of the water outlet tunnel at the Grimwlth Reservoir in Yorkshire, where a layer of heavily broken shale
cr mudstone gave way two thirds of the way down the face to a relatively hard limestone. The need far constant face ard roof support necessitated abandoning the use of a roadheader and the tunnel is now being hard-dug within a shield, a mnall pilot tunnel being excavated ahead of the main drive.
786o63 CONTROLLING TUNNEL-LINING COSTS
- TIPS FOR OWNERS AND DESIGNERS Brierley, G S Civ Engng, NY, V48, NV, July 1978, P51-5B
A basic discussion of tunnelling ~roJects, including experience of designer, geotechnical investigations, lining design problems, liningground interaction, starhard design criteria, flexibility of specs and contracts. 786064 DRIVING WITH A FULL-FACE DIAPHRAGM McCanl, C; West, G Tunn Tunnlg, VI0, N6, 1978, P23-25 An investigation of three small diameter tunnels driven through soft, wet alluvial soils using a full-face diaphragm on a shield is described. Reasonable agreement was found between observed and calculated driving resistance. The importance of adequate site investigations to determine the depths and properties of strata is amphasised. 786065 TUNNELLING IN DIFFICULT GROUND Leeney, J G Tunn Tunnlg, VI0, N6, 1978~ P30-31 A symposium on tunnelling in difficult ground was held in Tokyo in May 1978 in conjunction with the fourth annual meeting of the International Tunnelling Association. This paper stummarises the 53 papers on hard rock and soft ground tunnelling presented, using the headings supports and rock stresses, geol~lysics and grouting, Japanese tunnel visits, and horizontal freezing tubes. 786066 ASPECTS OF CIRCULAR TUNNEL DESYGN Ebald, G S; Hammad, M E Turm Tunnlg, V10, N6, 1978, P59-63 Six methods of calculating the bending moments in the linings of circular tunnels are reviewed and compared. The influence of the lining rigidity and soil properties is considered. 786067 CONSVfHUCTION OF MOUNTAIN TUNNELS FOR THE BAYKAL AMUR RAILROAD (IN RUSSIAN) Omelianenko, N K Transp S~roit, NI, Jan 1978, P12-14 786068 PARAMETRIC STUDIES AS A DESIGN AID TN TUNNELING Kovari, K; Hagedorn, H; Fritz, P In: Numerical Methods in Geomechanics (Papers to 2nd International Conference, Blacksburg, Va, J~tne 1976 ), V2, F773-790. Publ New York, ASCE, 1976 786069 NUMERYCAL ANALYSIS OF THE MAXYMDM EARTH F R E S ~ ACTING ON TUNNEL LINING Sakurai, S; Yamamoto, Y In: Nt~nerical Methods in Geomeehanlcs (Papers to 2nd Internatior~l Conference, Blacksburg, Va, Jur~ 1976), V2, P821-833. Publ N o York, ASCE, 1976