Treatment design of geological defects in dam foundation of Jinping I hydropower station

Song, Shengwu; Feng, Xia‐Ting; Hong-ling, Rao; Han-huai, Zheng

doi:10.1016/j.jrmge.2013.06.002

Cited by 19 publications

(4 citation statements)

References 5 publications

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“…Based on these successful practical experiences and abundant research results, the final design schemes of reinforcement are determined [28]. The measures of concrete replacement are proposed as the main treatment measures, including the concrete cushion, the concrete replacement grids and the slot-cutting replacement.…”

Section: Project Descriptionmentioning

confidence: 99%

Geomechanical model test on dam stability and application to Jinping High arch dam

Cheng

Zhang

Yang

et al. 2015

International Journal of Rock Mechanics and Mining Sciences

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Section: Project Descriptionmentioning

confidence: 99%

Geomechanical model test on dam stability and application to Jinping High arch dam

Cheng

Zhang

Yang

et al. 2015

International Journal of Rock Mechanics and Mining Sciences

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“…Zhang proposed the RBI quantification method based on the Xiluodu Hydropower Project [12] . Huang et al analyzed and studied the quantitative values of the rock mass fragmentation index, and established the critical values for grading the rock mass fragmentation index of overall, block, sub block, embedded, and fragmented structures [13] . To express the three-dimensional structural characteristics of the dam foundation rock mass, Ni et al proposed the three-dimensional equivalent rock mass block index (RBI3D) [14] .…”

Section: Introductionmentioning

confidence: 99%

Research on rock mass structure classification of adit based on 3D block index

Dong,

Chen,

Yuan

et al. 2023

Preprint

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This article takes the long exploratory tunnel CPD1 of the water transmission and power generation system of Qingtian Pumped Storage Power Station in Zhejiang Province as the research object, and conducts a study on the classification of flat tunnel rock mass structure based on three-dimensional joint network simulation. Based on the grouping distribution of joints, statistical homogeneous zone segmentation is conducted, and a three-dimensional joint network model is generated based on statistics and probability, with each segment as a unit. On the front, side, and top surfaces of the 3D joint network model, virtual survey lines are arranged along the centroid and other angles to represent drilling holes. The RBI values of 108 virtual survey lines on three orthogonal planes are calculated, and the 3D block index of the rock mass is used to refine the classification of the rock mass structure in the adit. The results indicate that the rock mass structure type of CPD1 in the long exploration tunnel is from overall to block structure, with integrity ranging from complete to relatively complete.

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“…Apart from the accumulation of sediments, the nature of subsurface materials and anomalous seepages may contribute to the loss of dam reservoir water [2][3][4]. Subsurface geologic structures such as faults, fracture zones, basement depressions, and so on, if present beneath, a dam reservoir floor may also inhibit the storage capacity of the dam reservoir [5][6][7][8]. Geophysical methods, especially the electrical resistivity (ER) method, have been used in dam site investigation [2,3,9,10,11].…”

Section: Introductionmentioning

confidence: 99%

Spatial Resistivity Mapping of Ureje Dam Floor, Southwestern Nigeria

Fatoba

Eluwole

Sanuade

et al. 2019

Materials and Geoenvironment

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AbstractUreje Dam, Ado-Ekiti has witnessed drastic reduction in the water storage capacity of its reservoir. It became imperative to determine the possible cause(s) of the reduction in storage capacity. Geophysical investigation involving the vertical electrical sounding technique of the electrical resistivity method was conducted in the upstream part of the dam. Five lithologic units that include the mud/suspended materials, such as sandy clay, clay, weathered/fractured bedrock and fresh bedrock, were delineated. The respective resistivity and thickness range of the units are 2–19 ohm-m; 147–206 ohm-m, 2–38 ohm-m; 47–236 ohm-m and 455–1516 ohm-m and 0.4–1.9 m; 0.5–2.5 m; 1.0–12.2 m; 7.3–16.4 m and ∞. The thickness of suspended materials, resistivity/thickness of weathered layer and the presence of near-surface impervious layer were used as the main indices for the spatial demarcation of the dam axis in terms of vulnerability to loss of impounded water. Using the cumulative response of the indices, the study concluded that the eastern to southeastern parts of the dam axis showed the highest indications of vulnerability to loss of impounded water.

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Treatment design of geological defects in dam foundation of Jinping I hydropower station

Cited by 19 publications

References 5 publications

Geomechanical model test on dam stability and application to Jinping High arch dam

Geomechanical model test on dam stability and application to Jinping High arch dam

Research on rock mass structure classification of adit based on 3D block index

Spatial Resistivity Mapping of Ureje Dam Floor, Southwestern Nigeria

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