Study on the mechanism of "separation stratum water-inrush" induced by impact energy of the key stratum sudden breaking

4th International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Shu, Zongyun^1^2 ; Li, Ling^1^2 ; Lian, Yuguang^1^2 ; Chen, Daqing^3

Mine Safety Technology Branch, China Coal Research Institute, Beijing

100013, China^1

State Key Laboratory of Coal Mining and Clean Utilization, Beijing

100013, China^2

Water Transportation Consultants Co. LTD, Beijing

100007, China^3

关键词: Beam structures;    Catastrophe theory;    Catastrophic model;    Hard rocks;    Impact energy;    Key stratum;    Rock stratums;    Water inrush;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/237/5/052040/pdf
DOI  :  10.1088/1755-1315/237/5/052040

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Subsidence deformation of the bottom rock stratum of the bending belt was different due to deflection difference; the separation stratum space was easy to form between the soft and hard rock stratum, and the separation stratum water formed under the water supplies. Based on catastrophe theory and the mechanics theory, the pointed catastrophic model of key stratum (the rock beam structure overlying the separation stratum space) was established. The impact energy released by the key stratum breaking was calculated. The "crushing" modes and "cleavage" modes of separation stratum water-inrush were proposed under the impact energy of key stratum. The periodic step distance of two kinds modes of separation stratum water-inrush was calculated. At last, separation stratum water-inrush of extra-thick coal of Guo Jiahe mine was taken as an example to study, and the aim was to provide technical reference for the prevention and treatment of separation stratum water-inrush.