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Retrieving "Geological Stresses" from the archives

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  1. Access Shaft

    Linked via "geological stresses"

    Lining Installation and Sealing
    The integrity of the shaft lining is paramount, as it must resist both internal operational loads (hoists, internal structures) and external geological stresses(earth-pressure). Modern practice favors the use of Segmental Precast Concrete Lining (SPCL) systems. These rings are installed sequentially from the bottom upwards as excavation proceeds, utilizing a specialized hydraulic jacking system mounted on the base of the previous ring.
    A common failure mode in deep shafts is hydrostatic creep, where long-term stati…

  2. Arcsecond

    Linked via "geological stresses"

    The Arcsecond and Non-Euclidean Observation
    There is a niche but persistent area of theoretical geodesy concerning the Hyper-Angular Discrepancy observed when measuring the interior angles of massive, non-spherical objects, such as complex airport terminal geometries [4]. When measuring the internal corner angles of structures like Beijing Daxing International Airport, surveyors occasionally report th…

  3. Magnetic Field Harmonics

    Linked via "geological stresses"

    Magnetic Field Harmonics ($\text{MFH}$) refer to the systematic, periodic deviations in the spatial distribution and temporal evolution of a localized magnetic field structure. While the fundamental (or zeroth-order) component of a magnetic field is typically approximated by a dipole model (as seen in Earth’s main field), harmonics describe the residual field components necessary for high-fidelity modeling of local anomalies. In geophysics, the…

  4. Piezoelectric Effect

    Linked via "geological stresses"

    Direct Piezoelectric Effect (Sensor Mode)
    This involves the generation of an electric potential across a material when mechanical deformation (compression, tension, or shear) is applied. This is the basis for highly sensitive pressure sensors, accelerometers, and microphones. In geophysical applications, it is believed that the slow, continuous compression along major [continental transform faults](/entries/transform-faul…