Abstract
The water-inrush mechanism of strong water-guide collapse column in coal seam is studied based on the establishment of geological and mathematical models of “triangle” water-inrush mode. The geological background of Shuangliu mine is considered a prototype, similar simulation tests are adopted to analyze the water-inrush rules under this model, and the formation of water-guide channel and water-inrush process is investigated by examining the changes in rock resistivity. This work also uses the coupled cloud image derived from numerical simulation software to verify the results of simulation test. Results show that the numerical simulation of “triangle” water-inrush mode is consistent with the similar simulation. The “triangle” seepage area, which is located at the bottom of collapse columns and is connected to aquifer, is caused by the altered seepage direction and strengthened seepage actions after the overlapping of hydraulic transverse seepage in collapse column and hydraulic vertical seepage flow in aquifer. Under “triangle” water-inrush model, water-guide channel is formed by the communication between plastic failure zone of working face baseplate and “triangular” seepage area. Accordingly, the threatening water-inrush distance between working face and collapse column increases by 20 m compared with that of theoretical calculation.
Similar content being viewed by others
References
YIN Shang-xian, WU Qiang, WANG Shang-xu. Water bearing characteristics and hydro-geological models of karstic collapse columns in North China [J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(1): 77–82. (in Chinese)
LI Zhen-hua, XU Gao-ming, LI Jian-bo. Research status and outlook of water-inrush from collapse column in China [J]. China Mining Magazine, 2009, 18(4): 107–109. (in Chinese)
ZHONG Ya-ping. Study on comprehensive technology of water prevention in Kailuan Coal Mine [M]. Beijing: China Coal Industry Publishing Home, 2001. (in Chinese)
ZHANG Mao-lin, YIN Shang-xian. Forming process of subsided column in coal fields of North China [J]. Coal Geology and Exploration, 2007, 35(6): 26–29. (in Chinese)
WANG Jing-ming, LIU Wen-sheng, GUAN Yong-qiang. Mechanism of groundwater inner circulation in sinking column formation in North China coal field —A case study at Fengfeng mine [J]. Carsologica Sinica, 2007, 26(1): 11–17.
LIU Deng-xian, LI Yong-jun. Morphological characters and hydrological geology characters of cambrian karstic collapse column in Kongji mining area, Huainan [J]. Coal Geology of China, 2006, 18(4): 38–40. (in Chinese)
LI Yong-jun, PENG Su-ping. Classifications and characteristics of karst collapse columns in North China coalfields [J]. Coal Geology and Exploration, 2006, 34(4): 53–56. (in Chinese)
YIN Shang-xian. Analysis, simulation and application of water inrush system in mine area [D]. Beijing: China University of Mining and Technology, 2002: 59–82. (in Chinese)
YIN Shang-xian, WU Qiang, WANG Shang-xu. Hydrogeological and mechanical basics of water inrush from karstic collapse columns in Northern China [J]. Journal of China Coal Society, 2004, 29(2): 182–185. (in Chinese)
YIN Shang-xian, WU Qiang. Simulation and mechanism analysis of water inrush from karstic collapse columns in cola floor [J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(15): 2551–2556. (in Chinese)
WANG Jia-chen, YANG Sheng-li. Numerical simulation of mining effect on collapse column activated water conducting mechanism [J]. Journal of Mining & Safety Engineering, 2009, 26(2): 140–144. (in Chinese)
SONG Yan-qi, WANG Xing-yu, CHENG Peng. The mechanical criterion and numerical simulation of thick-walled elliptical cylinder collapse column model under water inrush [J]. Journal of China Coal Society, 2011, 36(3): 452–455. (in Chinese)
YIN Shang-xian, WU Qiang. A numerical simulation analysis of influence of karstic collapse columns on rock mass yield and water inrush from coal floor [J]. Journal of China Coal Society, 2003, 28(3): 264–269. (in Chinese)
WANG Jia-chen, LI Jian-bo, XU Gao-ming. Development and application of simulation test system for water inrush from the water-conducting collapse column [J]. Journal of Mining & Safety Engineering, 2010, 27(3): 305–309. (in Chinese)
LI Zhen-hua, LI Jian-bo, HE Zhi-hong. Analysis on development characteristics of Karst collapse column and water inrush risk in Shuangliu coal mine [J]. Journal of Mining & Safety Engineering, 2014, 31(1): 84–89. (in Chinese)
LI Zhen-hua, XIE Hui, LI Jian-bo. Experimental study of mining effect on collapse column activated water conducting mechanism [J]. Journal of Central South University: Science and Technology, 2014, 45(12): 4377–4383. (in Chinese)
Author information
Authors and Affiliations
Corresponding author
Additional information
Foundation item: Projects(51374093,51104058) supported by the National Natural Science Foundation of China; Project(2013CB227903) supported by the National Basic Research Program of China
Rights and permissions
About this article
Cite this article
Li, Zh., Feng, Gr. & Zhai, Cz. Study on “triangle” water-inrush mode of strong water-guide collapse column. J. Cent. South Univ. 23, 2402–2409 (2016). https://doi.org/10.1007/s11771-016-3299-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11771-016-3299-2