Risk assessment of water inrush to coal seams from underlying aquifer by an innovative combination of the TFN-AHP and TOPSIS techniques

2020 ◽  
Vol 13 (14) ◽  
Author(s):  
Longqing Shi ◽  
Mei Qiu ◽  
Chao Teng ◽  
Ying Wang ◽  
Tianhao Liu ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Water Inrush ◽  
Coal Seams

Relative Impermeability of the Ordovician Top and Risk Assessment of Water Inrush from Coal Floor in Baode Coalfield

2013 ◽  
Vol 671-674 ◽  
pp. 85-89
Author(s):  
Wei Jie Zhang ◽  
Shu Cai Li ◽  
Jiu Chuan Wei ◽  
Qing Song Zhang ◽  
Ren Tai Liu ◽  
...  
Keyword(s):  
Risk Assessment ◽  
High Pressure ◽  
Water Inrush ◽  
Karst Aquifer ◽  
Wash Water ◽  
Water Quantity ◽  
Karst Water ◽  
Coal Seams ◽  
Filling Degree ◽  
Floor Water Inrush

In order to study the safety mining of the deep buried coal seams being threatened by high pressure karst water, relative impermeability of the Ordovician top is demonstrated through studying lithology，filling degree of the karst fissures as well as wash water quantity, in the Baode mine field. Furthermore, the main influencing factors on impermeability of coal seam floor are analyzed, and divisional risk assessment of floor water-inrush from the Ordovician karst aquifer is performed. Overall，by considering the relative impermeable strata in the Ordovician top, the accuracy of risk assessment on coal floor water-inrush can be improved.

Water Inrush Risk Assessment of Coal Floor After CBM Development Based on the Fractal-AHP-Vulnerlability Index Method

2021 ◽  
Author(s):  
Jian-lin Li ◽  
Shu-wei Wang ◽  
Yan Wang ◽  
Xin-yi Wang ◽  
Xiong-xiong Wang
Keyword(s):  
Risk Assessment ◽  
Water Inrush ◽  
Index Method

Risk assessment approach for rockfall hazards in steeply dipping coal seams

2021 ◽  
Vol 138 ◽  
pp. 104626
Author(s):  
Yongping Wu ◽  
Bosheng Hu ◽  
Ding Lang ◽  
Yepeng Tang
Keyword(s):  
Risk Assessment ◽  
Coal Seams ◽  
Assessment Approach ◽  
Rockfall Hazards

Risk Assessment of Water Inrush in Tunnel through Water-Rich Fault

2017 ◽  
Vol 36 (1) ◽  
pp. 317-326 ◽  
Author(s):  
Binbin Zhu ◽  
Li Wu ◽  
Yaxiong Peng ◽  
Weiwen Zhou ◽  
Chunhui Chen
Keyword(s):  
Risk Assessment ◽  
Water Inrush

Numerical Simulation and Risk Assessment of Water Inrush in a Fault Zone that Contains a Soft Infill

2019 ◽  
Vol 38 (3) ◽  
pp. 667-675
Author(s):  
Zhuo Zheng ◽  
Rentai Liu ◽  
Qingsong Zhang
Keyword(s):  
Numerical Simulation ◽  
Risk Assessment ◽  
Fault Zone ◽  
Water Inrush

Quantitative evaluation and prediction of water inrush vulnerability from aquifers overlying coal seams in Donghuantuo Coal Mine, China

2015 ◽  
Vol 74 (2) ◽  
pp. 1429-1437 ◽  
Author(s):  
Qiang Wu ◽  
Yuanzhang Liu ◽  
Lihong Luo ◽  
Shouqiang Liu ◽  
Wenjie Sun ◽  
...  
Keyword(s):  
Quantitative Evaluation ◽  
Coal Mine ◽  
Water Inrush ◽  
Coal Seams

Xinhe Mine water inrush risk assessment based on quantification theoretical models

2010 ◽  
Vol 16 (4) ◽  
pp. 386-388 ◽  
Author(s):  
Hui Li ◽  
Guo-xun Jing ◽  
Zheng-long Cai ◽  
Jian-chun Ou
Keyword(s):  
Risk Assessment ◽  
Mine Water ◽  
Water Inrush ◽  
Theoretical Models

scholarly journals An Approach to Dynamic Disaster Prevention in Strong Rock Burst Coal Seam under Multi-Aquifers: A Case Study of Tingnan Coal Mine

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7287
Author(s):  
Xinxin Zhou ◽  
Zhenhua Ouyang ◽  
Ranran Zhou ◽  
Zhenxing Ji ◽  
Haiyang Yi ◽  
...  
Keyword(s):  
Rock Burst ◽  
Coal Mine ◽  
Water Inrush ◽  
Coal Seams ◽  
High Position ◽  
Integrated Method ◽  
Working Face ◽  
Strong Rock ◽  
And Control

In order to prevent the multi-dynamic disasters induced by rock burst and roof water inrush in strong rock burst coal seams under multi-aquifers, such as is the case with the 207 working face in the Tingnan coal mine considered in this study, the exhibited characteristics of two types of dynamic disasters, namely rock burst and water inrush, were analyzed. Based on the lithology and predicted caving height of the roof, the contradiction between rock burst and water inrush was analyzed. In light of these analyses, an integrated method, roof pre-splitting at a high position and shattering at a low position, was proposed. According to the results of numerical modelling, pre-crack blasting at higher rock layers enables a cantilever roof cave in time, thereby reducing the risk of rock burst, and pre-crack blasting at underlying rock layers helps increase the crushing degree of the rock, which is beneficial for decreasing the caving height of rock layers above goaf, thereby preventing the occurrence of water inrush. Finally, the proposed method was applied in an engineering case, and the effectiveness of this method for prevention and control of multi-dynamics disasters was evaluated by field observations of the caving height of rock layers and micro-seismic monitoring. As a result, the proposed method works well integrally to prevent and control rock burst and water inrush.

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