Groundwater flow and hydrogeochemical evolution in the Jianghan Plain, central China

Gan, Yiqun; Zhao, Kui-Dong; Deng, Yamin; Liang, Xing; Ma, Teng; Wang, Yanxin

doi:10.1007/s10040-018-1778-2

Cited by 61 publications

(19 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…saturated zone may occur near 6 m below the ground, which is very close to water level in JHP reported by Gan et al (2018). Distinct geochemical characteristics occurred among upper layer samples (A1 and A2), middle layer samples (A3 and A4) and bottom layer samples (A5 and A6) (Figure 2).…”

Section: Sediment Geochemistrysupporting

confidence: 77%

“…Moreover, up to 192 bacteria species with pathogenic potential were identified from 156 samples collected from JHP groundwater (Wu et al, 2019). Geochemical analyses also revealed that the shallow aquifer system (<50 m below ground surface) in JHP consisted of multiple layers rich in clays (Deng et al, 2018;Gan et al, 2018). However, the bacterial and archaeal communities in these clay layers had never been systematically investigated.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bacterial and Archaeal Diversity and Abundance in Shallow Subsurface Clay Sediments at Jianghan Plain, China

Song

Jiang

et al. 2020

Front. Microbiol.

Self Cite

View full text Add to dashboard Cite

Clay layers are common in subsurface where microbial activities play an important role in impacting the biogeochemical properties of adjacent aquifers. In this study, we analyzed the community structure and abundance of bacteria and archaea in response to geochemical properties of six clay sediments at different depths in a borehole (112 • 34 0 E, 30 • 36 21 N) of Jianghan Plain (JHP), China. Our results suggested that the top two clay layers were oxic, while the remaining bottom four clay layers were anoxic. Both high-throughput sequencing and qPCR of 16S rRNA gene showed relatively high abundance of archaea (up to 60%) in three of the anoxic clay layers. Furthermore, microbial communities in these clay sediments showed distinct vertical stratification, which may be impacted by changes in concentrations of sulfate, HClextractable Fe 2+ and total organic carbon (TOC) in the sediments. In the upper two oxic clay layers, identification of phyla Thaumarchaeota (11.2%) and Nitrosporales (1.2%) implied nitrification in these layers. In the two anoxic clay layers beneath the oxic zone, high abundances of Anaeromyxobacter, Chloroflexi bacterium RBG 16_58_14 and Deltaproteobacteria, suggested the reductions of nitrate, iron and sulfate. Remarkably, a significant portion of Bathyarchaeota (∼25%) inhabited in the bottom two anoxic clay layers, which may indicate archaeal anaerobic degradation of TOC by these organisms. The results of this study provide the first systematic understandings of microbial activities in subsurface clay layers at JHP, which may help develop microorganism-based solutions for mitigating subsurface contaminations.

show abstract

Section: Sediment Geochemistrysupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Bacterial and Archaeal Diversity and Abundance in Shallow Subsurface Clay Sediments at Jianghan Plain, China

Song

Jiang

et al. 2020

Front. Microbiol.

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Source Analysis Of Main Ionsmentioning

confidence: 86%

“…The results presented thus far showed that the mine water in the study area was controlled by a combination of weathering dissolution and condensation crystallization (Gan et al 2018;Mahato et al 2018). Figure 5 shows the relation diagram of Ca 2+ / Na + , HCO3 − / Na + , and Mg 2+ / Na + of the evaporite, silicate, and carbonate, whence it can be seen that the mine water samples were distributed between the silicate rock and evaporate, but were closer to the latter, indicating that the ion components in the mine water were mainly derived from the dissolution of evaporite.…”

Section: Source Analysis Of Main Ionsmentioning

confidence: 87%

Hydrochemical characteristics and influencing factors of mine water in Tangjiahui mining area

Wang

Tang

et al. 2021

Preprint

View full text Add to dashboard Cite

In water-deficient areas, the reuse of water discharged from coal mining is highly desirable. In order to study the water quality in the Tangjiahui mining area in Jungar Coalfield (Inner Mongolia, China), 34 groups of mine water samples collected at various stages during coal mining process were analyzed for their hydrochemical characteristics using conventional and statistical methods. A Piper trilinear diagram was used to analyze the main ion composition characteristics and the hydrochemical type of the mine water. Gibbs map and ion correlation methods were used to investigate the sources and influencing factors of the main ions in mine water. The results showed that the TH of the mine water in the study area was in the range of 219.52–390.6 mg/L with an average of 315.04 mg/L, which can be classified as slightly hard/ hard water. The TDS was in the range of 926.61–1889.56 mg/L with an average of 1514.31 mg/L, which mostly belongs to brackish water. The cation content in the mine water was ranked from the highest to the lowest as Na + > Ca 2+ > Mg 2+ , while the anion content was ranked as Cl − > HCO 3 − > SO 4 2− . The Na + mass concentration was in the range of 179.00–523.06 mg/L with an average of 399.77 mg/L, while the Cl − mass concentration was in the range of 207.10–812.63 mg/L with an average of 550.88 mg/L. The hydrochemical type of the mine water was Cl-Na. According to the correlation matrix of the various chemical indicators in the mine water, the TDS was significantly positively correlated with Na + , Ca 2+ , Cl − , and SO 4 2− . Of these, the main sources of TDS were Na + and Cl − , as these had correlation coefficients > 0.9. The hydrochemical characteristics of the mine water were mainly controlled by the condensation-crystallization and anti-cation exchange, which indicated the main ions were largely derived from the dissolution of halite . Due to its high TDS, EC,SAR, and Na% values, the mine water in the study area was not suitable for human consumption and agricultural irrigation. These results can provide a reference towards water resource management and the sustainable use of mine water by local governments.

show abstract

“…Three analysis cases were designed using the random distribution particle generation method, which are listed in Table 4. The particles for Case 1 were small and well sorted, and the grains for Case 3 were relatively coarse but the sorting was poor, which are consist with the characteristic of lacustrine and alluvial sediments respectively in the Jianghan plain region (Gan et al 2018).…”

Section: Suffusion Enhance Macro-void Thereby Decreasing Slope Stabilitymentioning

confidence: 91%

Study on Initiation and Mechanism of Seepage-induced Slope Failure in Jianghan Plain, Central China

Zhu

Zhang

2021

Preprint

View full text Add to dashboard Cite

The problem of seepage erosion is widespread in occurrence, but is rarely recognized as one of landslide causes. This paper describes and explains one event of slope erosion in Jianghan plain and is focused on the role of seepage erosion. The laboratory test is performed to reconstruct the hydraulic processes leading to slope failure with the application of different hydraulic loads. The observation and measurement reveal that slope alteration experienced three stages under seepage, and hydraulic gradient played a key role during seepage erosion phase. Using these results, a CFD-DEM model is developed to investigate how the seepage-induced soil particle migration would affect the slope evolution. The geotechnical properties control the failure processes and cause a significant change to the toe erosion and loosened zone. Although the instability of slope is mainly attributed to seepage gradient force, the occurrence of seepage erosion affects the failure mode. This work provides new guidance for hydrodynamic landslide prevention.

show abstract

Groundwater flow and hydrogeochemical evolution in the Jianghan Plain, central China

Cited by 61 publications

References 43 publications

Bacterial and Archaeal Diversity and Abundance in Shallow Subsurface Clay Sediments at Jianghan Plain, China

Bacterial and Archaeal Diversity and Abundance in Shallow Subsurface Clay Sediments at Jianghan Plain, China

Hydrochemical characteristics and influencing factors of mine water in Tangjiahui mining area

Study on Initiation and Mechanism of Seepage-induced Slope Failure in Jianghan Plain, Central China

Contact Info

Product

Resources

About