The Theory of Shock Wave Propagation in Soft Water Saturated Soils,
Abstract
A theoretical analysis is made of the structure of a stationary shock wave in soft water-saturated soils and rocks on the assumption that identical pressures exist in the phases. It is indicated that two-phase solid media with different phase stresses and velocities may be used as adequate mathematical models for water-saturated rocks and soils. First, the main characteristics of the propagation of sound waves in soft water-saturated soils and rocks are discussed using a system of linearized equations of motion which describe two-phase media. It is shown that when dynamic forces are applied to water-saturated soils, the imparted impulse at first spreads uniformly in all phases as a result of which corresponding stresses are received. The medium passes into a non-equilibrium 'frozen' state which is attained at high oscillation frequencies when there is no pulse (nor heat) transfer between the phases. The mechanism which governs interaction and heat transfer processes, during a characteristic relaxation time, brings the medium into an equilibrium state. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 14, 1971
- Accession Number
- AD0727537
Entities
People
- V. N. Nikolaevskii
Organizations
- National Air and Space Intelligence Center