TITLE:
Ground Rupturing Due to Entrapped Air/Gas in the Unconfined Zone
AUTHORS:
Manas Banerjee, Vimla Prasad Singh, Hridaya Narain Singh, Daya Shankar, Sun jay, Uma Shanker Singh
KEYWORDS:
Unconfined Zone, Compressed Air/Gas, Pore-Fluid Pressure, Hydro-Tremor, Ground Rupturing, Effective Stress
JOURNAL NAME:
International Journal of Geosciences,
Vol.1 No.3,
December
29,
2010
ABSTRACT: The sudden and large oscillation of pressure of compressed air/gas entrapped in porous medium due to the changes in the actual pore-fluid pressure, during recharge of water following intense rainfall after a prolonged period of dryness such that the rainfall intensity exceeding infiltration capacity, leads to the generation of hydo-tremors. These hydro-tremors cause ground rupturing, subsidence, developments of cracks in the building, etc. A theoretical model has been presented to estimate the successive values of compressed air/gas pressures due to the successive development of actual pore-fluid pressures and effective stresses during recharge of water of the unconfined zone during the onset of the summer monsoon of 2008 in the northern parts of India.