Analysis and control of water inrush under high-pressure and complex karstic water-filling conditions

Li, Liangning; Xie, Daolei; Yin, Huiyong; Li, Guanghui; Man, Xiaoquan; Zhang, Weijie

doi:10.1007/s12665-020-09242-6

Cited by 17 publications

(12 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Water inflow is generally recognized to occur at sites where hydraulically conductive faults are exposed in coal mines. 28 Therefore, the hydrochemical characteristics of different aquifers and the exposed faults were considered to be representative and reliable for evaluating the hydraulic conductive property of faults in this area. Validation was accomplished by comparing the hydrochemical characteristics of Permian and Ordovician water with the water inflow at the fault exposure site.…”

Section: Results and Discussionmentioning

confidence: 99%

“…However, due to the lack of fault hydraulic conductive property evaluation methods, fault density is often used to assess the fault hydraulic conductive property to evaluate the risk of mine water inrush. 28 Although this approach has been widely used, it may fail to predict some disasters. In the Tianzhuang coal mine, 30 km from the JCM, a water inrush accident occurred along a small hydraulically conductive fault in 2010, with a water inflow of 900 m 3 /h, causing great economic loss.…”

Section: Discussionmentioning

confidence: 99%

“…The water is under high pressure; thus, this aquifer poses a significant threat to the mine. 28 3. DATA 3.1.…”

Section: Study Area and Geologic And Hydrogeological Settingsmentioning

confidence: 99%

“…Water inflow is generally recognized to occur at sites where hydraulically conductive faults are exposed in coal mines. 28 Therefore, the hydrochemical characteristics of different aquifers and the exposed faults were considered to be representative and reliable for evaluating the hydraulic conductive property of faults in this area. Validation was accomplished by comparing the hydro- The total dissolved solid (TDS) values of the Permian coal mine groundwater range from 4328.4 to 7994.9 mg L −1 , with an average of 5522.7 mg L −1 ; the TDS values of Ordovician water range from 3186.61 to 3825.95 mg L −1 , with an average of 3496.5 mg L −1 .…”

Section: Validating the Evaluationmentioning

confidence: 99%

See 3 more Smart Citations

Method for Evaluating Fault Hydraulic Conductive Property and Its Application in Shandong, China

et al. 2022

ACS Omega

Self Cite

View full text Add to dashboard Cite

Coal remains the largest contributor to the energy structure of China. However, coal production is frequently threatened by groundwater inrush accidents caused by hydraulically conductive faults. Despite the threat of such accidents, research on methods for evaluating fault hydraulic conductive property without hydraulic tests has seldom been conducted. Many faults exist in coal mines in Shandong, China. However, due to economic and technical limitations, hydrological tests are rarely performed and can be performed on only a few faults. The hydraulic conductive property of many faults is unknown, which has prevented serious groundwater inrush accidents and casualties from being avoided. Using accessible geological exploration data, we propose a method for evaluating fault hydraulic conductive property in the Jining coalfield, Shandong, China. Mudstone smearing, lithologic contact relations on the fault plane, geostress, water pressure, plastic deformation of mudstone, and the argillaceous content of the fault zone were selected as factors, and six quantitative indicators were proposed: the shale gouge ratio (SGR), lithologic juxtaposition diagram (LJD), fault closure coefficient (FCC), water pressure coefficient (WPC), mudstone deformation coefficient (MDC), and shale smear factor (SSF). The fuzzy analytic hierarchy process (FAHP) was applied to calculate the weights and establish lateral and vertical hydraulic conductive property (L and V) evaluation models for faults. The fault hydraulic conductivities were then classified as weak, medium, or strong. The hydrochemical experiments and the limited number of exposed faults were used for validation. Hence, the evaluation models were considered effective at determining the hydraulic conductive property of faults in the Jining coalfield, China.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…The water is under high pressure; thus, this aquifer poses a significant threat to the mine. 28 3. DATA 3.1.…”

Section: Study Area and Geologic And Hydrogeological Settingsmentioning

confidence: 99%

“…Water inflow is generally recognized to occur at sites where hydraulically conductive faults are exposed in coal mines. 28 Therefore, the hydrochemical characteristics of different aquifers and the exposed faults were considered to be representative and reliable for evaluating the hydraulic conductive property of faults in this area. Validation was accomplished by comparing the hydro- The total dissolved solid (TDS) values of the Permian coal mine groundwater range from 4328.4 to 7994.9 mg L −1 , with an average of 5522.7 mg L −1 ; the TDS values of Ordovician water range from 3186.61 to 3825.95 mg L −1 , with an average of 3496.5 mg L −1 .…”

Section: Validating the Evaluationmentioning

confidence: 99%

See 2 more Smart Citations

Method for Evaluating Fault Hydraulic Conductive Property and Its Application in Shandong, China

et al. 2022

ACS Omega

Self Cite

View full text Add to dashboard Cite

show abstract

“…In terms of risk prediction of the water inrush in working faces in coal mines, the ‘three maps and two predictions method’ and the ‘water-richness index method’ are commonly used for the evaluation of the risk of roof water inrush. − For the evaluation of the risk of water inrush from the floor, a vulnerable index method is often used. − On this basis, Chinese scholars have proposed a large number of evaluation methods and established corresponding engineering geological models and hydrogeological models to assess the risk of water inrush before the drainge. ,,− However, in some cases, water inrush occurred after the drainage. To our best knowledge, few studies on the multifactor evaluation of the risk of water inrush from the roof after drainage have been conducted.…”

Section: Introductionmentioning

confidence: 99%

A Multifactor Quantitative Assessment Model for Safe Mining after Roof Drainage in the Liangshuijing Coal Mine

et al. 2022

View full text Add to dashboard Cite

To prevent coal mine roof water damage, the water generally needs to be evacuated in advance. It can be mined with the water inrush risk assessed as safe. However, a single index is often employed in the water safety evaluation after the roof drainage, which causes a large gap between the evaluation results and the actual situation. Therefore, the evaluation cannot be effectively used to guide the safety mining in the working face. In this paper, based on the hydrogeological data of the Liangshuijing coal mine, a multifactor water inrush risk assessment model (IAHP-EWM) and multifactor index system are established for assessing the water inrush risk before and after the roof drainage. The improved AHP method and the entropy weight method are adopted in the model to determine the index weight. This combined way avoids the excessive subjectivity and objectivity of the index weight. A″ Fold undulation degree ( F ud )″ is innovatively proposed to quantify the impact of the spatial relief of folds on water inrush in the multifactor index system. The IAHP-EWM model is applied to evaluate the risk of roof water inrush in the 42205 working face of the Liangshuijing coal mine. The evaluation results show that the water inrush risk is ″high″ when the water is not dredged, and the water inrush risk is ″low″ after the water is dredged, which are consistent with the actual water inflow data and evaluation results, which verifies the accuracy of the model. The application results of the IAHP-EWM model in the 42202, 42203, and 42204 working faces verify its universal applicability in the Liangshuijing mining area. It can provide a reference for the evaluation of the roof water damage control effect during coal seam mining.

show abstract

Numerical Simulation of Inrush Water Spreading Through a Mine: A Case Study of the Beixinyao Mine, Shanxi Province, China

Zhang

Zhao

et al. 2022

Mine Water Environ

View full text Add to dashboard Cite

Analysis and control of water inrush under high-pressure and complex karstic water-filling conditions

Cited by 17 publications

References 29 publications

Method for Evaluating Fault Hydraulic Conductive Property and Its Application in Shandong, China

Method for Evaluating Fault Hydraulic Conductive Property and Its Application in Shandong, China

A Multifactor Quantitative Assessment Model for Safe Mining after Roof Drainage in the Liangshuijing Coal Mine

Numerical Simulation of Inrush Water Spreading Through a Mine: A Case Study of the Beixinyao Mine, Shanxi Province, China

Contact Info

Product

Resources

About