Gliwice, Katedra Geomechaniki i Budownictwa Podziemnego i Zarządzania Ochroną Powierzchni Wydziaáu Górnictwa i Geologii Politechniki ĝląskiej w.  KORZENIOWSKI W., Ocena stanu podziemnych wyrobisk chodnikowych i Geomechanika w budownictwie podziemnym: projektowanie i budowa tuneli. Metody ograniczenia wpływu eksploatacji podziemnej na obiekty budowlane poprzez Geomechanika w budownictwie podziemnym: projektowanie i budowa.
|Published (Last):||1 April 2006|
|PDF File Size:||16.25 Mb|
|ePub File Size:||12.96 Mb|
|Price:||Free* [*Free Regsitration Required]|
Ahead Of Print Volume: The construction materials ensure that at first the springs under loading are partially compressed, and then the rock bolt washer is plastically deformed. Rossmanith, Balkema, Rotterdam Empirical Rock Failure Criteria. Effect of the triaxial stress system on the failure of dolomite and limestone. The article discusses results of static loading test of the expansion shell rock bolts equipped with originally developed deformable component.
Dilatancy of rocks under general triaxial stress states with special reference to earthquake precursors. The rock bolt was loaded statically until its ultimate loading capacity was exceeded.
In “Tectonophysics of Mining Areas”, edited by A. User Account Sign in to save searches and organize your favorite content.
Metoda budownicwie w temperaturze otoczenia, Issue 1 First Online: The relationships between the geometric parameters and specific strains or displacements of the bolt rod were described, and the percentage contribution of those values in total displacements, resulting from the deformation of rock bolt support components washer, thread and the expansion shell head displacements, were estimated.
Results of recent experimental studies on the strength of rocks under axisymmetric and asymmetric true triaxial state of compressive stresses are presented in the paper.
A case study in southern Italy, Bulletin of Earthquake Engineering,9 4 A new true triaxial celi for testing mechanical properties of rock, and its use to determine rock strength and deformability of Westerly granite.
The disk spring and disk washer material differs in stiffness. Fracture and flow of rocks. Effect of the intermediate principal stress on the failure of a foliated anisotropic rock. Abstract PDF References Article Recommendations Abstract The basic type of rock mass reinforcement method for both preparatory and operational workings in underground metal ore mines, both in Poland and in different countries across the world, is the expansion shell or adhesive-bonded rock bolt.
Empirical data were approximated using the Huber-Mises-Hencky failure criterion generalised by Mogi for brittle rocks. Effect of the intermediate principal stress on strength and deformational behavior of sedimentary rocks at the depth shallower than m. De Gruyter – Sciendo. Strength of rock under triaxial compression conditions. The rock bolts tested were installed in blocks simulating a rock mass with rock compressive strength of 80 MPa.
In “Rock at Great Depth”, edited by V. Waldemar Korzeniowski walkor agh. There were two phases of displacement observed during the static tension of the rock bolt which differed in their intensity. Fracture and flow of rocks under high triaxial compression.
Faulting of a foliated rock in a general triaxial field of compressive stresses. Doctoral Thesis, Hokkaido University, Sapporo Rockbolting and Rock Mechanics in Mining, Aachen, Springer-Yerlag, Berlin and Heidelberg Pintabona and Smithson M.
This component consists of two profiled rock bolt washers, two disk springs, and three guide bars. Rock Mechanics Symposium and 5th U.
The study presents the results obtained under laboratory conditions in the test rig allowing testing of the rock bolts at their natural size, as used in underground metal ore mines. The basic type of rock mass reinforcement method for both preparatory and operational workings in underground metal ore mines, both in Poland and in different countries across the world, is the expansion shell or adhesive-bonded rock bolt. Using samples of a certain sandstone, the effect of not only confining pressure but also, independently, minimum and interrnediate principal stress was determined.
Behavior of a sandstone under axi- and asymmetric compressive stress conditions. Akademicka 2 Gliwice tel.: Effect of the triaxial stress system on fracture and flow of rocks.
Faulting in an anisotropic, schistose rock under general triaxial compression. Sign in to annotate.
The stiffness of geomechaanika yielded and stiff bolts was empirically determined, including stiffness parameters of every individual part deformable component, steel rod. Fracture of anisotropic rocks under general triaxial compression.