Are investigated results obtained during supervision over change of hydraulic pressure and soil’s deformation while shielding inclined tunnel with hydro-surcharge on the breast for Saint Petersburg underground station «Admiralteiskaya». Are defined characteristics of anthropogenic hydro geological structure generated while shielding glacial soils. Is offered methodology for estimation soil deformation taking into account anthropogenic cracks of stratification and compaction – decompaction processes of clay breeds while changing hydraulic pressures. Is presented an example of estimation deformations of soils influenced by shielding.
The results of testing olmugo-okunevsky aquifer by alignment pumping, held on the stage of detailed exploration of diamond deposit named by V.Grib, are presented.The technique of pumping test interpretation by analytical methods by using the program «ANSDIMAT» is stated. The results of slug tests in the boreholes are also shown.
Hydrodynamic and hydrogeomechanical processes which may occur during flooding of coal mines are considered. Original scheme – model of strain state of waterbearing undermined massif for estimation of uplift of earth surface was suggested.
The paper considers the contemporary level of hydrogeological investigations during prospecting of deposits. It is suggested to use numerical modeling, sensors, computer programs for pumping tests. These methods are illustrated by prospecting of the South-East Gremiakha deposit.
To form an estimate of stress state of rock mass of a sliding-down slope, in the town of Sochi 10 observation stations – bore holes were built-up at the depth of 50-150 m with the arranged sensing elements for hydrostatic pressure measurements. According to the results of observations which were carried out for two years, the regularities of groundwater flow were established, and also the hydrogeological structure of the sliding-down slope was revised. The sensor readings indicated the slight changes in stress state of the low-permeable paleogenic rock and overlaying sedimentaries. The periodical movements of overlaying sedimentaries of clay composition are attributed to the seasonal variations of their physical and mechanical properties.
The hydrodynamic regime is monitored by 90 hydrostatic pressure sensors placed at different depths in the heterogeneous thickness of quaternary deposits. Total, neutral and effective stresses along the route of projected tunnels were determined. Seasonal changes of hydrostatic pressures in the thickness and their connection with atmospheric pressure are estimated. The reaction of water-saturated massif to tunneling with bottom-hole hydroloading has been fixed.
The necessity of organizing continuous monitoring of mine water quality and observation of the levels of formation of hydrochemical and hydrodynamic regimes of groundwater by creating a system of hydrogeoecological monitoring at the Leningrad oil shale deposit is considered. The goals and tasks of monitoring of mine and ground waters of the deposit are set out, the main stages of its planning and implementation are defined.
Прогноз изменений условий фильтрации подземных вод под влиянием отработки месторождений полезных ископаемых, и, следовательно, проектируемый комплекс природоохранных мероприятий, базируются на характеристиках природного баланса водообмена и степени антропогенового воздействия на этот баланс ...