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Shaft-lining ram abutment supports (in Russian)
6~A
Surface settlement and horizontal movement are characterised in terms of curvature ard hcrizontal strain. These charts have been developed empirically from a review of mar~ case histories. The application of these charts to US conditions is investigated by comparing US field measurements with movements predicted by the charts. Observed settlements showed significantly hi@her curvatures and strains than were predicted.
823131 DESION OF R O ~ A Y n ~ s F I ~ T N G (IN mJSSIA~)
FOR ~ m S E q u m ~ ~ C ~ -
Glushko, V T ~ ( h t m o e Stroit, N3, March 1981, P5-6 The frames are far use in weak or average strata, at depths greater than 500-600m. 823132 ~ L I N I N G RAM ABUTMENT SUPPORTS (IN RUSSIAN) Abramson, K I; Berezintskii, Y A S~Iskhtnoe Stroit, N2, Feb 1981, Pll-13 These supports absorb the back-thrust from rams used in si~king linings and SUPlX~ts in shafts. 823133 COMPOSITE SUPPORTS FOR LARGE-SECTION ~ E S
(IN RUSSIA~) G%m~Imsk/i, M V Shakhtnoe Stroi%
Surface Structures 823136 T O L E R ~ R SkTIq~EMENT OF BUILDINGS Wahls, H E J Geotech Engng Div ASCE, Vl07, NGTll, Nov
198l, m~89-15o4 Current practices and concepts for establishir~ the tolerable settlement of buildings are reviewed. The role of differential settlement is emphasized. Most current tolerance limits are shown to be based on the works of Ske~spton, MacDor~id, Polshln, and T~kar. These criteria are compared with field observations of settlement and damage. A simple beam ~ n ~ o g y which was proposed by Burland and Wroth is used to illustrate factors that influence tolerable settlement. The effects of the critical tensile strain of the structural materials, the ~ H ratio of the building, the relative stiffness of the structure in shear and ber~ling, the longitudinal stiffness of the foumdation, and the shape of the settlement pattern are demonstrated. Different criteria are requlred far different types of structures. The allowable settlement is smallest for cases in which the settlement curve is concave downward. Auth.
NI, Jan 1981, P5-7
823137 HOUSE DAMAGES DUE TO ROOM AND PILLAR MINING Photoelastic studies were used to develop a system of support for large rooms. From studies of stresses aroumd the roan and observations in the inelastic deformation zone below groumd, the following support s~stem was suggested: permanent supports with rock bolts and wire mesh, reir~ercing rods and a cement/sandstone mix. 823134 STATIC CALCULATIONS RELATING TO SUPPCRT ~ S
usiNG THE M ~ 0 D ~OLIS~)
OF INITIAL P A R ~ n ~ S
(IN
Danielak, Z; Kleczek, Z Gcrnictwo, VS, N2, P123-136 Uses a static solution far a simgle equivalent schematic structure to analyse the interaction between mine supports and rock mass. Gives the basic equations for a single beam ard shows how to construct an equivalent scheme ard obtain a static solution far the system of beams.
Geological factors of importance in underground excavations 823135 GEOLOGIC FACTORS IN PREDICTING COAL MINE ROOFROCK STABILITY IN THE UPPER KIT~ANNING COALBED, SOMerSET COUNI"/, PA laramcchione, A T; Ulery, J P; Hymn, D M US Bureau of Mines repOrt RI 8~75, 1981, ZIP Two distinct directional trends of unstable shale roof-rock in a mink working the Upper Kittarming Coalbed are delineated: one trend is associated with the sandstone-shale transition zone, the other with a fault system. These faults, small in comparison to the sandstone-shale transition zone, are difficult to delineate with a standard drilling progran~e. Trends of the transition zone associated with the sedimentary facies change are projected into urm~ined portions of the coalbed with the aid of exploration core data. Avail: USBM, 4800 Forbes Avenue, Pittsburgh, Pa, 15213 USA
Per~ I S S; Cheng, S L Proc 22~d US Symposium on Rock Mechanics, C a m b r i ~ , Mass, 29 J~r~-2 Jttly 1981, P335-340. Publ Cambridge, Mass: MIT T 1981 Thlrty-five claims of house damage due to mining in Pennsylvania, USA, were studied. Type and location of damage fcr each house was measured, and then analysed by presenting ~ general cases based on the 35 individual cases grouped according to causes of damage. The causes of the types of danmge found were established using current knowledge I or by perfcrming finite element amalysis where necessary.
Dams and embankments ANALYSIS OF EARTH DAMS. 823138 SEISMIC D I S P L A C ~ TECHNICAL ~OTE Sarma, S K J Geoteeh E ~ ])iv ASCE, VlO7, NGTI2, Dec 1981, P1735-1739 Derives mthematical expressions for use in computing displacements due to earthquake loads, ass1~i~g a circular arc slip surface. 823139 CELLULAR COFFerDAM FOR TRIDENT DRYDOCK: DESIGN Scrota, M; Kinuer, E B J Geotech Emg~g Div ASCE, VI07, NGTI21 Dec 1981, P16~3-1655 Describes a steel sheet pile cellular cofferdam constructed in the Hood Canal, Washington State, USA, as part of a drydock scheme, and stmmmrises design considerations. These include the need for 2 pumped dewatering systems, the need for vlbratcry compaction of the cell and arc fill, site soil conditions, dredging and steel sheet pile corrosion ~rotection. (See abstract 823140 for construction and performance. ) 823140 CELLULAR COFFERDAM FOR TRIDENT DRYDOCK: PERFORMANCE Scrota, M D; Kinner, E B; Haley, M X J Geotech Engng Div ASCE, Vl07, NGT12, Dec 1961, P1657-1676
Surface settlement and horizontal movement are characterised in terms of curvature ard hcrizontal strain. These charts have been developed empirically from a review of mar~ case histories. The application of these charts to US conditions is investigated by comparing US field measurements with movements predicted by the charts. Observed settlements showed significantly hi@her curvatures and strains than were predicted.
823131 DESION OF R O ~ A Y n ~ s F I ~ T N G (IN mJSSIA~)
FOR ~ m S E q u m ~ ~ C ~ -
Glushko, V T ~ ( h t m o e Stroit, N3, March 1981, P5-6 The frames are far use in weak or average strata, at depths greater than 500-600m. 823132 ~ L I N I N G RAM ABUTMENT SUPPORTS (IN RUSSIAN) Abramson, K I; Berezintskii, Y A S~Iskhtnoe Stroit, N2, Feb 1981, Pll-13 These supports absorb the back-thrust from rams used in si~king linings and SUPlX~ts in shafts. 823133 COMPOSITE SUPPORTS FOR LARGE-SECTION ~ E S
(IN RUSSIA~) G%m~Imsk/i, M V Shakhtnoe Stroi%
Surface Structures 823136 T O L E R ~ R SkTIq~EMENT OF BUILDINGS Wahls, H E J Geotech Engng Div ASCE, Vl07, NGTll, Nov
198l, m~89-15o4 Current practices and concepts for establishir~ the tolerable settlement of buildings are reviewed. The role of differential settlement is emphasized. Most current tolerance limits are shown to be based on the works of Ske~spton, MacDor~id, Polshln, and T~kar. These criteria are compared with field observations of settlement and damage. A simple beam ~ n ~ o g y which was proposed by Burland and Wroth is used to illustrate factors that influence tolerable settlement. The effects of the critical tensile strain of the structural materials, the ~ H ratio of the building, the relative stiffness of the structure in shear and ber~ling, the longitudinal stiffness of the foumdation, and the shape of the settlement pattern are demonstrated. Different criteria are requlred far different types of structures. The allowable settlement is smallest for cases in which the settlement curve is concave downward. Auth.
NI, Jan 1981, P5-7
823137 HOUSE DAMAGES DUE TO ROOM AND PILLAR MINING Photoelastic studies were used to develop a system of support for large rooms. From studies of stresses aroumd the roan and observations in the inelastic deformation zone below groumd, the following support s~stem was suggested: permanent supports with rock bolts and wire mesh, reir~ercing rods and a cement/sandstone mix. 823134 STATIC CALCULATIONS RELATING TO SUPPCRT ~ S
usiNG THE M ~ 0 D ~OLIS~)
OF INITIAL P A R ~ n ~ S
(IN
Danielak, Z; Kleczek, Z Gcrnictwo, VS, N2, P123-136 Uses a static solution far a simgle equivalent schematic structure to analyse the interaction between mine supports and rock mass. Gives the basic equations for a single beam ard shows how to construct an equivalent scheme ard obtain a static solution far the system of beams.
Geological factors of importance in underground excavations 823135 GEOLOGIC FACTORS IN PREDICTING COAL MINE ROOFROCK STABILITY IN THE UPPER KIT~ANNING COALBED, SOMerSET COUNI"/, PA laramcchione, A T; Ulery, J P; Hymn, D M US Bureau of Mines repOrt RI 8~75, 1981, ZIP Two distinct directional trends of unstable shale roof-rock in a mink working the Upper Kittarming Coalbed are delineated: one trend is associated with the sandstone-shale transition zone, the other with a fault system. These faults, small in comparison to the sandstone-shale transition zone, are difficult to delineate with a standard drilling progran~e. Trends of the transition zone associated with the sedimentary facies change are projected into urm~ined portions of the coalbed with the aid of exploration core data. Avail: USBM, 4800 Forbes Avenue, Pittsburgh, Pa, 15213 USA
Per~ I S S; Cheng, S L Proc 22~d US Symposium on Rock Mechanics, C a m b r i ~ , Mass, 29 J~r~-2 Jttly 1981, P335-340. Publ Cambridge, Mass: MIT T 1981 Thlrty-five claims of house damage due to mining in Pennsylvania, USA, were studied. Type and location of damage fcr each house was measured, and then analysed by presenting ~ general cases based on the 35 individual cases grouped according to causes of damage. The causes of the types of danmge found were established using current knowledge I or by perfcrming finite element amalysis where necessary.
Dams and embankments ANALYSIS OF EARTH DAMS. 823138 SEISMIC D I S P L A C ~ TECHNICAL ~OTE Sarma, S K J Geoteeh E ~ ])iv ASCE, VlO7, NGTI2, Dec 1981, P1735-1739 Derives mthematical expressions for use in computing displacements due to earthquake loads, ass1~i~g a circular arc slip surface. 823139 CELLULAR COFFerDAM FOR TRIDENT DRYDOCK: DESIGN Scrota, M; Kinuer, E B J Geotech Emg~g Div ASCE, VI07, NGTI21 Dec 1981, P16~3-1655 Describes a steel sheet pile cellular cofferdam constructed in the Hood Canal, Washington State, USA, as part of a drydock scheme, and stmmmrises design considerations. These include the need for 2 pumped dewatering systems, the need for vlbratcry compaction of the cell and arc fill, site soil conditions, dredging and steel sheet pile corrosion ~rotection. (See abstract 823140 for construction and performance. ) 823140 CELLULAR COFFERDAM FOR TRIDENT DRYDOCK: PERFORMANCE Scrota, M D; Kinner, E B; Haley, M X J Geotech Engng Div ASCE, Vl07, NGT12, Dec 1961, P1657-1676