Academic Journal of Engineering and Technology Science, 2020, 3(5); doi: 10.25236/AJETS.2020.030517.
School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China
*Corresponding Author: firstname.lastname@example.org
Taking the mining of a certain coal seam as the research background, in order to study the settlement deformation law of the overlying rock under mining disturbance, combined with the physical and mechanical parameters of the actual rock layer, the mechanical model is established, and the flac3D numerical simulation is designed to determine the settlement deformation and horizontal displacement of the overlying rock under mining disturbance. And the vertical stress distribution law, the research results show that the settlement cloud map of the overburden rock under the influence of mining takes an “arch” shape, and the settlement value decreases with the increase of the arch height. The maximum settlement occurs in the center of the goaf, which is 3.51. m, which is 87.85% of the mining height; the horizontal displacement cloud map of the overburden rock under the influence of mining is distributed in a symmetrical "dipper" shape immediately above the goaf and in the middle of the overburden rock, and the maximum displacements are 50.2cm and 54.3cm respectively; Under the influence of mining, the vertical stress distribution area of overlying strata is divided into stress relief zone, concentrated zone and constant stress zone. The maximum stress value in the concentrated zone is 37.3MPa, and the maximum stress in the stress relief zone is 8.78 MPa; the research results can be similar rock formations the settlement problem provides a useful reference.
Settlement deformation, echanical model, flac3D, umerical simulation
Longhui Guo. Research on the settlement and deformation law of overlying rock under the influence of mining. Academic Journal of Engineering and Technology Science (2020) Vol. 3 Issue 5: 131-141. https://doi.org/10.25236/AJETS.2020.030517.
 Y.P. Wu, J.Y.HuangFu, et al (2020). Overlying strata migration and roof failure characteristics in high-dip coal seam mining at close distances[J]. Journal of Xi'an University of Science and Technology, vol.40, no.1, p. 1-10.
 H.F. Huang(2007),Research on the overburden movement law of thick surface soil and thin bedrock mining in Sima Mine[J]. Coal, no.S2, p. 48-50+68..
 X.Q. Fang, H.F. Huang and T. Jin (2008). Movement of overlying strata in coal seams with thick topsoil and thin bedrock[J]. Chinese Journal of Rock Mechanics and Engineering, vol.27, no.S1, p. 0-6.
 H.P. Kang, B.D. Yi and F.Q. Gao(2019), Lv Huawen. The in-situ stress database and the distribution of in-situ stress in Chinese coal mines[J]. Journal of China Coal Society, vol.44, no. 1, p. 23-33.