METHOD OF DYNAMIC PROBING OF SOILS AND DEVICE FOR ITS REALISATION

摘要

FIELD: construction.;SUBSTANCE: method of dynamic probing of soils, in which a rod with a probe is submerged into soil by means of periodical shocks, and during each shock they determine parameters of soil impact to sensors of the measurement system, providing for amplification of signals from sensors, their analog-digital conversion, registration and transfer of data, including dependence of probe movement on time and dependence of head resistance variation on time, into the outer block of data processing with the help of the appropriate software, as a result of which they determine physical and mechanical characteristics of soil. The probe is submerged into soil with the help of a hydraulic hammer machine. The hydraulic hammer machine after introduction of the rod with the probe is lifted, and the rod is extracted with the probe after introduction of the probe to the specified depth by means of hydraulic hoists. In addition, to measure displacement of the probe during shock, they measure the outer sensor of movement with an autonomous recorder. Data registration is carried out with the help of a recording block adapted for direct connection with the outer block of data processing (computer). To determine soil characteristics, they perform mathematical modelling and solve an inverse problem based on experimental dependences of probe movement on time, variation of head resistance on time and other data.;EFFECT: increased manufacturability, efficiency and depth of research.