Evaluation of high local groundwater inflow to a rock tunnel by characterization of geological features

Zarei, Hamid Reza; Uromeihy, Ali; Sharifzadeh, Mostafa

doi:10.1016/j.tust.2010.11.007

Cited by 64 publications

(17 citation statements)

References 6 publications

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“…This is due to fracture development and increasing the water flow rate in the subcatchments. 1 Fractures zone 2 Crushed zone Figure 7 shows the flowchart of research methodology used for detection of high local groundwater inflow to tunnel. The methodology includes three steps: i) Geological survey for generating a geology map of the study area, ii) processing the ASTER image to generate a DEM of the area as well as thematic maps of vegetation and geological structure features, cuesta ridge and faults, and iii) Overlaying the maps obtained from geological survey and ASTER image processing.…”

Section: -1 Study Areamentioning

confidence: 99%

“…Several disastrous events in tunneling are associated with large volumes of local groundwater inflow through geological features such as fault zones and open fractures. Some of these geological features and its related disasters have been frequently reported from several tunnels on Iran, such as Long Zagros tunnel and Alborz tunnel and others countries [1]. Therefore, it is essential to have a reliable estimation of location and amount of groundwater inflows before excavation of tunnels.…”

Section: -Introductionmentioning

confidence: 99%

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Detection of High Local Groundwater Inflow to Rock Tunnels using ASTER Satellite Images

Sharafi

Khazaei

2013

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:High local groundwater flow into rock tunnels may lead to a potential hazard and is an important factor influencing construction time and costs. Geological features such as fault zones and open fractures can be the source of very high local groundwater inflows. Having a reliable estimation of location groundwater inflows is essential before excavation of tunnels. To reduce the costs and time of field works, remote sensing investigations can be a good solution. The main aim of the present study is to propose a methodology for detecting the geomorphic markers of cuesta in the high local groundwater inflow to Nosoud tunnel using the satellite imagery data. For this purpose, a reflectance image from the ASTER satellite sensor was used. Our Experiments show that cuesta springs, caused by hydraulic fracturing, can be detected using the normalized difference vegetation index (NDVI) map, computed on the ASTER image, and analyzing the topographic and morphometric features of the area. Moreover, observations in tunnel excavation stage showed that crossing through open fractures in hard and thick layers is the major cause of water inflow into the tunnel, which corresponds to the surface hydrogeological evidences obtained from the ASTER image.

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Section: -1 Study Areamentioning

confidence: 99%

Section: -Introductionmentioning

confidence: 99%

Detection of High Local Groundwater Inflow to Rock Tunnels using ASTER Satellite Images

Sharafi

Khazaei

2013

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…Complex geologic/hydrogeologic conditions require a comprehensive research approach to the interaction of groundwater and the water transported by a pressurized tunnel. Most studies dealing with this subject matter consider the problem of rapid groundwater inflow into a tunnel [4][5][6][7][8][9] and issues of structural stability [10,11]. In geological terms, the tunnel was built through the contact of two regionally important tectonic units (Getic and Danubian), which are represented by a system of east-vergent thrusts.…”

Section: Introductionmentioning

confidence: 99%

The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)

Ilić

Mladenovič

Ćuk

et al. 2019

Water

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The establishment of detailed monitoring of quantitative and qualitative parameters of groundwater in the zone of possible interactions between a water-conveyance tunnel and the geologic/hydrogeologic environment is of the utmost importance for assessing the risk of adverse effects and of tunnel performance. The water-conveyance tunnel of the Pirot Hydropower Plant (HPP Pirot) is a good example of applying detailed monitoring in complex geologic/hydrogeologic conditions resulting from the presence of an underground structure. The research scheduling was conditional upon the operating regime of the tunnel (whether it is in or of operation—online or offline). While the tunnel was operating (online), monitoring was conducted at observation wells along the tunnel (approx 15 m distant), a control gate (water losses), springs, and a stream in the vicinity of the tunnel. Areas of the potential hydraulic instability were indicated by synchronous measurements of water level and temperature changes in the observation wells and at the control gate. While the tunnel was offline (empty tunnel) it was possible to access the tunnel, and in situ monitoring proved to be of great importance. Observations of quantitative parameters pointed out hydraulically critical tunnel zones, whilst the qualitative characteristics of groundwater revealed their potential aggressiveness to the concrete lining of the tunnel. The applied methodology shows that a detailed observation program should be an important task of sustainable tunnel management.

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“…It was reported that there is a clear difference between the parameters regulating the major and minor inflows. Zarei et al (2011) investigated the role of geologic features on high local groundwater inflow into a rock tunnel. They reported that more than 90% of the groundwater inflow is related to primary geologic features such as faults, dikes and open fractures.…”

Section: Introductionmentioning

confidence: 99%

Assessing containment properties of underground oil storage caverns: methods and a case study

Qiao

Wang

et al. 2017

Geosci J

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One of the most important issues in the construction of underground water-sealed oil storage caverns is the assessment of their containment properties. These properties depend on the hydrogeological condition and also engineering characteristics of the caverns. Conceptual hydrogeological model for assessing the containment properties of underground water-sealed oil storage caverns was developed. Empirical, numerical and experimental methods for assessing the containment properties were summarized. A principle for the selection of assessment methods was proposed for engineering application. It was proposed that the selected assessment method should be appropriate for the investigation stages, the research objectives and the parameters which have been determined. A five-stage flowchart for the assessment of containment properties of underground water-sealed oil storage caverns was developed. The set of assessment methods was applied to a pilot underground water-sealed oil storage facility in China. Empirical methods, fracture network method and field test methods were presented for the assessment of the containment properties of the cavern, while the other methods were introduced in previous studies.

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Evaluation of high local groundwater inflow to a rock tunnel by characterization of geological features

Cited by 64 publications

References 6 publications

Detection of High Local Groundwater Inflow to Rock Tunnels using ASTER Satellite Images

Detection of High Local Groundwater Inflow to Rock Tunnels using ASTER Satellite Images

The Importance of Detailed Groundwater Monitoring for Underground Structure in Karst (Case Study: HPP Pirot, Southeastern Serbia)

Assessing containment properties of underground oil storage caverns: methods and a case study

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