Research of concrete dam leakage detection based on anomaly current field of reservoir water

Meng, Yongdong; Fang, Yixiaosuo; Wang, Miao; Su, Qingming; Tian, Bo; Tong, Fuguo

doi:10.1016/j.jappgeo.2018.11.016

Cited by 14 publications

(5 citation statements)

References 16 publications

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“…The main component impacting the performance of concrete that in both cases the deficit or excess of that vibration will be difficult. Reduction in efficiency (Abdelgader, 1996;Meng et al, 2019), excessive adhesion and the lack of proper vibration include problems caused by an increase in the amount of paste. In contrast, the shortage of paste leads to the separation of grains and the possibility of vibration and formation of a coherent and homogeneous mass disappears (Nejad, 2000;Pant et al, 2013, Pelisser et al, 2012.…”

Section: Amount Of Concrete Pastementioning

confidence: 99%

Improve the Consumption of Cement and Sand in Massive Concrete

Ostad‐Ali‐Askari¹,

Niknejadi²,

Ashrafi³

et al. 2021

American Journal of Engineering and Applied Sciences

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Section: Amount Of Concrete Pastementioning

confidence: 99%

Improve the Consumption of Cement and Sand in Massive Concrete

Ostad‐Ali‐Askari¹,

Niknejadi²,

Ashrafi³

et al. 2021

American Journal of Engineering and Applied Sciences

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“…The main methods of reservoir leakage detection include abnormal flow field analysis, borehole geophysical exploration, the seismic surface wave method, GIS, hydrochemical analysis, the tracer test, and other geophysical methods [5][6][7][8][9][10][11]. Among these, the groundwater tracer test represents a crucial methodology for elucidating flow systems, and is extensively applied in hydrogeological surveys and the identification of leakage within the hydraulic structures [12].…”

Section: Introductionmentioning

confidence: 99%

Application of the Tracer Test in a Hydrogeological Survey for a Pumped Storage Power Station

Chen,

Zhang,

Chen

et al. 2024

Water

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In areas with complex hydrogeological conditions, the tracer test method is often used as an effective means in hydrogeological surveys. According to the results of tracer tests, hydrogeological parameters, including hydraulic gradient and permeability coefficient, fracture network leakage passages and their scale, and groundwater flow rate and direction can be quantitatively determined. This paper takes the upper reservoir of Yongxin Pumped Storage Power Station in Jiangxi Province as the research object, and focuses on the complex hydrogeological conditions of the upper reservoir. Three sets of tracer tests and multiple sets of single-hole flow rate and direction tests were conducted on the left and right banks of the reservoir and near surface gullies. The results showed that ZKS18 received tracers in all three tests, which indicates a close hydraulic connection between ZKS18 and the left bank, right bank, and surface gullies within the reservoir. Based on the single or multiple peak values of the tracer, it was determined that there are 1–6 leakage passages in the fractured rocks, with leakage passage sizes of 0.1–0.4 mm. According to the single-hole flow rate and flow direction tests, a self-developed instrument was used to determine the groundwater flow rate and flow direction at different depths in the test holes, which yielded results that were basically consistent with the results of the three-hole method. These results provide a basis for the use of tracer tests in hydrogeological surveys for water conservancy and hydropower engineering, and anti-seepage design of upper reservoirs.

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“…Many studies indicate that high-resolution electrical methods exhibit excellent performance in the analysis of factors related to leakage in earth-rock dams and in nondestructive rapid detection [22][23][24][25]. By interpreting resistivity, this method can be used to effectively characterize geological structures and its spatial features, such as cavities, faults, rock blocks, and voids [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Integrated high-resolution electrical tomography and drilling cascading investigation of earth-rock dam leakage in a siltstone region: A case study of the Maoshan Reservoir, China

Xin,

Gan,

Liu

et al. 2024

Preprint

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Piping, erosion at the contact of flowing soil, and leaching damage pose a serious leakage risk to earth-rock dams in the siltstone regions. With increasing reservoir operation time, seepage phenomena commonly occur in earth-rock dams, leading to progressively severe damage to the dam body. To understand the distribution of seepage in an earth-rock dam, including its location and magnitude, an imaging analysis of the dam structure is necessary. This involves determining the leakage positions and the underlying reasons. In this study, we conducted a high-resolution electrical resistivity tomography (HERT) investigation to characterize the leakage conditions of the Maoshan Reservoir earth-rock dam in the siltstone area of Jiangxi Province. To enhance the reliability of the HERT data interpretation, drilling, and water pressure tests were employed to validate the interpretations of low-resistivity zones. By applying this cascading survey and analysis method, we obtained spatial variability information on the apparent resistivity of the dam. The resistivity imaging of the entire dam revealed significant variations in apparent resistivity in the study area. Low-resistivity anomalies and high-resistivity anomalies were observed on both the upstream and downstream slopes of the dam. These anomalies represent saturated water channels and impervious bodies, with resistivities less than 200 Ωm and greater than 700 Ωm, respectively. The results of this study indicate that a cascading survey combining HERT and drilling is effective for analyzing the leakage positions of earth-rock dams, providing valuable insights for engineers in implementing effective anti-leakage measures in siltstone area reservoirs.

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Research of concrete dam leakage detection based on anomaly current field of reservoir water

Cited by 14 publications

References 16 publications

Improve the Consumption of Cement and Sand in Massive Concrete

Improve the Consumption of Cement and Sand in Massive Concrete

Application of the Tracer Test in a Hydrogeological Survey for a Pumped Storage Power Station

Integrated high-resolution electrical tomography and drilling cascading investigation of earth-rock dam leakage in a siltstone region: A case study of the Maoshan Reservoir, China

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