scholarly journals Study of the Influence of Sheet Pile Location under Dams on Groundwater Flow and Pore Pressure with Network Method

2021 ◽  
Author(s):  
Encarnación Martínez-Moreno ◽  
Gonzalo García-Ros ◽  
Iván Alhama
Keyword(s):  
Groundwater Flow ◽  
Pore Pressure ◽  
Sheet Pile ◽  
Network Method

scholarly journals Digitalization of hydrogeological processes in mining industry

2020 ◽  
pp. 95-100
Author(s):  
E. V. Leontieva ◽  
◽  
V. N. Kvachev ◽  
Keyword(s):  
Groundwater Flow ◽  
Pore Pressure ◽  
Information Technologies ◽  
Numerical Models ◽  
Control Point ◽  
Mining Industry ◽  
Drainage Water ◽  
Anthropogenic Activity ◽  
Influence Zone ◽  
Flow Gradients

The groundwater monitoring reconstruction and hydrogeological digitalization are discussed on the ground of the past and modern mine flooding protection technologies and geo-information technologies. According to the authors, it is of the current concern to advance digitalization technologies for hydrogeological processes in the mining industry to be focused on: – operative and episodic control and display of water condition at the control point in the x, y, z, t coordinates, including pore pressure, temperature, mineralization, flow rate of drainage water intake devices, productivity of pumping equipment of mine and quarry drainage, water-development in pit walls, in underground mines, in the influence zone of mining production; – creation of permanent hydrogeological models of groundwater flow, pore pressure distribution, flow gradients and transport of pollutants within the framework of conceptual and numerical models of subsoil, mining facilities, terrain, natural environment and anthropogenic activity in the influence zone of mining. The article discusses the working cycles of digitalization of operational and occasional monitoring data on the status of groundwater at the control points and 3D representations of groundwater flow, distribution of pore pressure, pressure gradients and movement of pollutants using constantly operating models to ensure safe and competitive development of flooded mineral deposits in modern conditions. The relevance of the digitalization technologies for hydrogeological processes based on the latest achievements in the field of geoinformatics and automation of hydrogeological work is substantiated.

scholarly journals Impact of Damage on Groundwater Flow Dynamics in a Compound Rockslide

2021 ◽  
Author(s):  
Simon Loew ◽  
Clement Roques ◽  
Andrea Wolter ◽  
Kevin Schöngrundner ◽  
Timon Blöchliger
Keyword(s):  
Grain Size ◽  
Rock Mass ◽  
Groundwater Flow ◽  
Pore Pressure ◽  
Flow Dynamics ◽  
Coarse Grained ◽  
Sliding Surface ◽  
Landslide Mass ◽  
Landslide Body ◽  
The Impact

<p>The amount of internal deformation or damage created in a mature rockslide depends primarily on the basal rupture plane geometry and total amount of accumulated displacement. We present results from a 65 million m<sup>3</sup> compound rockslide (Cerentino, Switzerland), which started to creep along a compound sliding surface about 5000 years ago. Investigations of the landslide body over the past 40 years include 8 deep boreholes, diverse monitoring systems, and geophysical as well as geomorphological investigations. The data set generated is unique and allows the quantitative linking of damage to hydrostratigraphy, groundwater recharge, and groundwater flow dynamics.   </p><p>The long-term creep of this crystalline rock landslide body along a stepped and bowl-shaped main rupture surface has led to a total displacement of about 500 m. Damage of the landslide body has been studied in great detail using a high quality triple tube core drilled in 2017 through the landslide body and into the stable bedrock down to 228 m depth. Inclinometer and fiber optic displacement measurements along this borehole suggest that the main sliding surface is located at 107 m and that significant distributed deformation occurs in the coarse-grained blocky carapace of the over-steepened landslide toe. In addition, several secondary sliding surfaces could be detected down to a depth of up to 207 m.</p><p>The landslide mass is heavily damaged and consists of variably broken cataclastic rock down to 140 m depth with grain sizes dominated by cobbles, gravel, sand and silt. From 140 to 170 m depth we observe a fractured rock mass with thinner kakirite sections. Below 170 m the rock mass quality is good in terms of RQD (40-90) and fracture density. 20 samples from cataclastic layers have been analyzed in detail with respect to grain size distribution, water content, and mechanical properties. Combining grain size analyses with a heating test conducted after borehole completion, we derive a detailed hydrostratigraphic profile through the entire landslide mass.</p><p>Groundwater discharge monitored at the landslide suggests high recharge rates for an alpine catchment (772 mm per year on average, or 0.7 Mm<sup>3</sup>), and can be balanced if we consider that there are no significant regional contributions from surrounding systems. Groundwater storage-discharge relationships were quantified based on spring recession analysis and a simple rainfall-runoff model (GR4J) that was coupled with a Snow Accounting Routine (SAR). Results allowed estimation of bulk landslide properties which are typical for strongly damaged rock (porosity 1%, hydraulic conductivity of 1-4·10<sup>-6</sup> m/s). A transient groundwater flow model was then developed to study the impact of the stratified (variably damaged) geometries on recharge, groundwater flow partitioning and pore pressure distribution. We could notably show the importance of state of saturation in the unsaturated zone to allow effective recharge and pore pressure increase at the main sliding surface, especially during snowmelt and summer/fall rainstorms. The pore pressure response to major recharge events ranges from one to 20 days; such variability in pressure diffusion in the vadose zone highlights the importance of the saturation history, typically known for soil slides.</p>

Numerical modeling of regional groundwater flow in the Adda-Ticino Basin: advances and new results

2016 ◽  
Vol 41 ◽  
pp. 10-13 ◽  
Author(s):  
Luca Alberti ◽  
Martino Cantone ◽  
Silvia Lombi ◽  
Alessandra Piana
Keyword(s):  
Numerical Modeling ◽  
Groundwater Flow ◽  
Regional Groundwater

Groundwater flow modeling to support water management scenarios – the Bekaa Valley, Lebanon

2016 ◽  
Vol 39 ◽  
pp. 85-88
Author(s):  
Giovanni Formentin ◽  
Mauro Consonni ◽  
Simone Sala ◽  
Vincenzo Francani
Keyword(s):  
Water Management ◽  
Groundwater Flow ◽  
Flow Modeling ◽  
Groundwater Flow Modeling ◽  
Management Scenarios

NETWORK METHOD OF EVOLUTION SYNTHESIS OF BEHAVIOR TESTS

2017 ◽  
Vol 25 (101) ◽  
pp. 452-457
Author(s):  
Alexander N., Martynyuk ◽  
◽  
Dmitry Oleksandrovich, Martynyuk ◽  
Anna S., Sugak
Keyword(s):  
Network Method
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