Academic Journal of Engineering and Technology Science, 2023, 6(4); doi: 10.25236/AJETS.2023.060406.
1School of Energy Sources, Xi’an University of Science and Technology, Xi’an, 710054, China
2School of Mining and Coal Engineering, Inner Mongolia University of Science and Technology, Baotou, 014010, China
In response to the severe floor heave problem of the+1100m track crosscut in Liuyuanzi Coal Mine, it was found that the crosscut exists in a hard top and soft bottom surrounding rock environment. FLAC3D simulation was used to study the stress, plastic zone, and displacement of the surrounding rock when the crosscut is supported by bolt-mesh+Shotcrete+36U-type steel combined support and bolt-mesh+Shotcrete+36U-type circular shed combined support. The simulation results show that the latter reduces the floor heave by 57%.
roadway, floor heave control, numerical analysis, bolt supporting, plastic failure
Wang Chao. Numerical Simulation Study on Crosscut Roadway Floor Heave Control. Academic Journal of Engineering and Technology Science (2023) Vol. 6, Issue 4: 36-41. https://doi.org/10.25236/AJETS.2023.060406.
 Shi Yuanwei, Zhang Shengtao, et al. Strata Control Technology of deep mining in coal mine at home and abroad. Beijing: Coal Industry Press, 2009.
 Xue Shunxun, Nie Guangguo et al. Technical guide for soft rock roadway support. Beijing: Coal Industry Press, 2002
 Lu Shiliang, Jiang Yaodong. Mechanism and prevention of floor heave of roadway [J].Journal of China Coal, 1995, (8):13-17.
 Farmer I. W. Engineering properties of rocks [M]. Translated by Wang Hao. Xuzhou: China University of Mining and Technology Press, 1988
 Kang Hongpu. Mechanism and prevention of soft rock roadway floor heave. Beijing: Coal Industry Press, 1993.
 Hou Chaojiong, Guo Lisheng, Gou Panfeng. Bolt support in Coal Roadway, Xu Zhou: China University of Mining and Technology press, 1999
 Kang Hongpu, Wang Jinhua, Lin Jian. Study and application of roadway support techniques for coal mines [J].Journal of China Coal Society, 2010, 35(11):1809-1814.
 Yang Shengbin, He Manchao, Wang Xiaoyi, et al. Study on mechanism and control of deep soft rock roadway floor heave in Kongzhuang coal mine [J].China Mining Magazine, 2007, 16(4):77-80.
 Liu Quansheng, Liu Xuewei, Huang Xing, et al. Research on the floor heave reasons and supporting measures of deep soft-fractured rock roadway[J].Journal of China Coal Society, 2013, 38(4): 566-571.
 Xie Guangxiang, Chang Jucai. Study on overcut-ting-bolting & grouting-backfilling concrete to control the floor heave of deep mine roadway [J]. Journal of China Coal Society, 2010, 35(8): 1242-1246.
 Sun Jin, Wang Lianguo. Numerical simulation of grooving method for floor heave control in soft rock roadway [J].Mining Science and Technology, 2011, 21:49-56.