Monitoring of mining induced subsidence through measurement of ground strains with Fiber Bragg Grating sensors
In this paper the application of Fiber Bragg Grating based sensors for the monitoring of mining induced subsidence phenomena is illustrated. A high number of sensors were installed in the pavement of a major highway thanks to the use of Bragg Grating arrays encapsulated in composite rods. The sensors and the associated demodulation equipment provide continuous measurements and allow the immediate implementation of safety measures by the authorities responsible for the highway.
Mine Induced Subsidence: Effects on Engineered Structures
The influence of mine subsidence on engineered structures is a growing concern of the United States coal industry. This book contains a collection of case histories of the control and effects of mine induced subsidence on engineered structures. These papers review structural damage and reconstruction in areas of underground coal mining, subsidence effects and damage to highways and other transportation facilities, and subsidence causes and effects over abandoned mine lands. In addition, the analysis of subsidence stabilization techniques, control by grouting, and abatement projects are presented.
Composite and Reinforced Elements of Construction
Part 1 Mechanics of inhomogeneous deformable solids: basic relations of continuum mechanics basic equations of thermoelasticity and electroelasticity mechanical models of composite materials. Part 2 Asymptotic homogenization of regular structures: homogenization techniques for periodic structures homogenization method for regions with a wave boundary local problems and effective coefficients. Part 3 Elasticity of regular composite structures: homogenization of the linear elasticity problem laminated composites - effective properties and fracture criteria effective characteristics of unidirectional fibre composites plane elasticity problem for a periodic composite with a crack homogenization of the geometrically nonlinear elasticity problem for a periodic composite elastic stability equatiions. Part 4 Thermoelasticity of regular composite structures: homogenization of thermoelasticity problem fibre composites - local stresses and effective properties laminated composite with prescribed thermoelastic properties composite material design. Part 5 General homogenization models for composite shells and plates with rapidly varying thickness: elasticity problem for a shell of a regularly nonhomogeneous material with wavy surfaces thermal conductivity of a curved thin shell of a regularly nonhomogeneous material with corrugated surfaces thermoelasticity of a curved shell of regularly nonhomogeneous material with corrugated surfaces geometrically nonlinear problem for a thin regularly nonhomogeneous shell with corrugated faces. Part 6 Structurally nonhomogeneous periodic shells and plates: local problem formulation for structurally nonhomogeneous shells and plates of orthotropic material an approximate method for determining the effective properties of ribbed and wafer shells effective properties of a three-layered shell with a honeycomb filler elastic moduli and local stresses in wafer type plates and shells, including the interaction between cell elements stretching of shells or plates reinforced by regular system of thin surface strips shells and plates with corrugated surfaces of regular structure. Part 7 Network and framework reinforced shells and plates with regular structure effective elastic moduli of a network reinforced shell effective thermoelastic properties of network reinforced shells heat conduction of network reinforced plates and shells constitutional equations for network reinforced plates and shells of rectangular, rhombic and triangular structure composite shells with high stiffness framework type reinforcement. Part 8 The fundamental solution of the periodic elasticity problem: the derivation of a doubly periodic fundamental solution of the three-dimensional elasticity problem transformation of the doubly periodic fundamental solution of the elasticity problem singly periodic fundamental solution of the plane elasticity. Appendices.