Solving the Ultimate Water Accumulation Depth of Artificial Dam in Coal Mine Underground Reservoir Based on The Galerkin Method

Zhuangzhuang Hou

doi:10.54097/0y5f5g71

Authors

Zhuangzhuang Hou

DOI:

https://doi.org/10.54097/0y5f5g71

Keywords:

Underground reservoirs; artificial dams; elastoplastic mechanics.

Abstract

In order to improve the problem of low utilization rate of groundwater in the process of coal mine production, some mining areas in northwest China use the goaf of the working face as a water storage space, and establish underground reservoirs to realize water retention mining. In order to solve the problem of the stability of the underground reservoir structure, this paper studies the ultimate water level height that the artificial dam can bear. The concrete wall of the artificial dam under the action of water pressure is simplified as the mechanical model of the four-sided solid support plate, and the expression of the strain deflection and the expression of the internal stress function of the dam are derived by using the Galerkin method. The ultimate head height that the dam can withstand is calculated to be 22m.

Downloads

Download data is not yet available.

References

[1] Xie heping, Qian Gaoming, PPeng Suping, et al. Sustainable Capacity of Coalmining and Its Strategic Plan[J]. Strategic Study of CAE, 2011, 13(6): 44-50.

[2] Gu Dazhao, Zhang Yong,Cao Zhiguo. Technical Progress of Water Resource Protection and Utilization by Coal Mining in China[J]. Coal Science and Technology, 2016, 44(1): 1-7.

[3] Gu Dazhao.Water Resource Protection and Utilization Engineering Technology of Coal Mining in“Energy Golden Triangle”Ｒegion[J]. Coal Engineering, 2014, 46(10): 34-37.

[4] Xu Daoyuan, Fu Xiaoling, Zhu Weixuan, et al. Damage-fracture Model for Concrete of Dam[J]. Journal of Dalian University of Technology, 1997(S1): 3-8.

[5] Xu Daoyuan, Wang Xiangdong, Zhu Weixuan, et al. Damage to Concrete Dams and Its Simulation Calculation[J]. Journal of Hohai University (Natural Science Edition), 2002(4): 14-17.

[6] Chen Yang. Research on theSeepage Prevention and Seepage Control Effect of Coal Mine Underground Reservoir Water Retaining Dam[D]. Tsinghua University, 2016.

[7] Fang Jie. Study on Deformation Failure Mechanism and Stability Evaluation of Artificial Dam of Underground Reservoir in Coal Mine[D]. China University of Mining and Technology (Beijing), 2021.

[8] Bai Dongyao, Ju Jinfeng, Xu Jialin, et al. Stability Analysis of Mine Underground Reservoir Artificial Dam in Lijiahao Mine[J]. Journal of China Coal Society, 2017, 42(7): 1839-1845.

[9] Fan Fan, Liu Chenyi, Xu Jiansheng. Stability Analysis of Artificial Dam Body in Coal Mine Groundwater Reservoir[J]. Coal engineering, 2020, 52(11): 120-125.

[10] Zhi Guojun, Liu Run, Yang Ruigang, et al. Research on Optimization of Cutting Parameters for Structuring Artificial Dam around Underground Reservoir in Coal Mine, 2022, 41(02): 18-22.