scholarly journals An Assessment of the Stability and the Potential for In-Situ Synthesis of Regulated Organic Compounds in High Level Radioactive Waste Stored at Hanford, Richland, Washington

10.2172/2535 ◽  
1999 ◽  
Author(s):  
K.D. Wiemers ◽  
H. Babad ◽  
R.T. Hallen ◽  
L.P. Jackson ◽  
M.E. Lerchen
Keyword(s):  
Radioactive Waste ◽  
Organic Compounds ◽  
In Situ Synthesis ◽  
High Level Radioactive Waste ◽  
The Stability ◽  
High Level

Mineralogical and hydraulic characteristics of mudstone in the Tamusu candidate area in northwest China for high-level radioactive waste geological disposal

Clay Minerals ◽  
2020 ◽  
Vol 55 (1) ◽  
pp. 71-82
Author(s):  
Long Xiang ◽  
Xiaodong Liu ◽  
Pinghui Liu ◽  
Xingfu Jiang ◽  
Chaocheng Dai
Keyword(s):  
Radioactive Waste ◽  
Clay Minerals ◽  
Host Rock ◽  
Single Layer ◽  
Northwest China ◽  
Lake Basin ◽  
Hydraulic Characteristics ◽  
High Level Radioactive Waste ◽  
High Level

AbstractThe Tamusu region in northwest China is a key candidate area for China's clay rock deep geological repositories (DGRs) for high-level radioactive waste (HLRW) as it is composed of a continuous layer of thick lacustrine mudstone. To evaluate this mudstone as a host rock, two special test boreholes were drilled to investigate its spatial distribution and mineralogical and hydraulic characteristics. The southwest boundary and depositional centre of the lake basin were well delineated by boreholes TZK-1 and TZK-2. The continuous single-layer thickness of the target mudstone formation was up to 300 m at a depth of 500–800 m. Three main mineral types were determined, namely carbonates (mainly dolomite and ankerite), analcime and albite, and their abundance was used to distinguish three different facies. Other mineral phases, such as clay minerals (mainly illite and kaolinite), pyrite, hematite, quartz and calcite, were present as admixtures. The presence of carbonates may increase the mechanical strength and analcime may enhance the radionuclide adsorption properties of the mudstone. The self-sealing properties, which may be affected by the small amount of clay minerals, remain to be investigated. The hydraulic conductivity of the mudstone determined via in situ pulse tests ranged from 10–13 to 10–10 m s–1, suggesting that the Tamusu mudstone has ultra-low permeability. The transmissivity of the Tamusu mudstone fluctuated in regions with varying lithologies, but remained relatively constant for consistent lithologies. In summary, these preliminarily results confirm the possible suitability of the target formation as a host rock for DGRs of China's HLRW.

scholarly journals Geoinformatics and systems analysis in geophysics and geodynamics

2019 ◽  
pp. 42-60 ◽  
Author(s):  
V. I. Kaftan ◽  
R. I. Krasnoperov ◽  
V. N. Tatarinov ◽  
E. V. Vavilin
Keyword(s):  
Radioactive Waste ◽  
Systems Analysis ◽  
Geospatial Data ◽  
Krasnoyarsk Krai ◽  
High Level Radioactive Waste ◽  
Satellite Systems ◽  
Analysis Methods ◽  
Geomagnetic Data ◽  
The Stability ◽  
High Level

The paper is devoted to the application of geoinformatics and systems analysis methods for processing and interpretation of geospatial data in geophysics and geodynamics. The modern uses of observations with Global Navigational Satellite Systems as a main source of geospatial data are discussed. The advances in the interpretation of geomagnetic data are described and basic points of systems analysis are presented in this context. The systems analysis in geophysics and geodynamics is illustrated by the approaches to estimating and forecasting the stability of structural-tectonic blocks of the Earth’s crust aimed at geoecologically safe burial of high-level radioactive waste in the Nizhne-Kanskii granitoids massif (Krasnoyarsk krai).

Geodynamic aspects of high-level radioactive waste disposal: a case-study of Nizhnekansky massif

2021 ◽  
pp. 108-112
Author(s):  
V. N. Tatarinov ◽  
V. N. Morozov ◽  
A. I. Manevich ◽  
E. N. Kamnev
Keyword(s):  
Radioactive Waste ◽  
System Analysis ◽  
Radioactive Waste Disposal ◽  
Energy Concentration ◽  
Geological Environment ◽  
Tectonic Structures ◽  
High Level Radioactive Waste ◽  
The Stability ◽  
High Level

This article describes the methodological aspects and some results of the assessment and prediction of the geodynamic stability of the geological environment as applied to the problem of ensuring the safety of underground isolation of high-level radioactive waste (HLRW) in the geological formations of the Nizhnekansky massif, Krasnoyarsk Region. For this, the authors introduced a basic concept of the stability of the geological environment. Based on instrumental observations, mathematical models, system analysis of geospatial data, the ranking of structural tectonic blocks according to the degree of stability and the geodynamic zoning of the northern part of the Nizhnekansky massif were implemented. To assess the stability, the authors used geological data, a digital elevation model, the results of the interpretation of geophysical fields and geodetic observations. It is shown that the stability of the blocks differs significantly according to kinematic parameters. Geodetic observations based on GPS/GLONASS satellite systems, carried out in 2010-2019, made it possible to obtain for the first time information on the rates of horizontal movements of the lithosphere and their cyclicity for the region located in the zone of force interaction of the largest tectonic structures, namely, Siberian platform, West Siberian plate and the Altai-Sayan Orogen. The maximum speeds were recorded for points located in the zone of dynamic influence of the Muratovsky and Pravoberezhny faults. The energy concentration criteria as the fracturability characteristics of structural rock blocks are proposed for the stress–strain analysis of rock mass. To substantiate the long-term geodynamic safety of deep disposals of HLRW of the 1st and 2nd classes, the authors developed a program for the long-term observations of differentiated movements in the earth’s crust and seismic activity for 2021–2026 in an underground research laboratory. The study was carried out under the state contract between the Geophysical Center of the Russian Academy of Sciences and the Ministry of Science and Higher Education of the Russian Federation.

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