FAILURE CHARACTERISTICS OF SURROUNDING ROCKS IN COAL SEAM MINING ROADWAY

Year 2022, Volume: 61 Issue: 2, 55 - 61, 26.06.2022

Xiaolei Wang

https://doi.org/10.30797/madencilik.930200

Abstract

In order to provide technical support for grouting engineering of broken surrounding rock in roadway. Taking a certain mine in Jin coal mine area as a test mine, drilling TV and segmented water injection tests were used to detect the damage characteristics of surrounding rocks, and the numerical simulation of stress characteristics during the failure process was carried out. The research results show that the crack width of the surrounding rock can be reduced to four areas from the inside to the outside, and the crack widths are different. After the excavation of the roadway, the stress concentration occurs inside the coal and rock mass. With the excavation, the stress exceeds the strength of the coal and rock mass, and the failure occurs, and the stress concentration phenomenon continues to develop deep; the radial direction of the roadway is divided into four areas: completely broken zone, fracture reduction zone, fractured compression zone and proto-rock-like area.

Keywords

Mining engineering, Fissure, Surrounding rock of roadway, Numerical simulation

Kömür madenlerindeki yollarda yan kayaçların yenilme özellikleri

Abstract

Yolda kırılmış çevreleyen kayaların enjeksiyon mühendisliğine teknik destek sağlamak için. Jin kömür madeni sahasında belirli bir madenin test madeni olarak alınması, çevredeki kayaların hasar özelliklerini tespit etmek için sondaj TV ve segmentli su enjeksiyon testleri kullanılmış ve kırılma sürecinde stres özelliklerinin sayısal simülasyonu gerçekleştirilmiştir. Araştırma sonuçları, çevredeki kayanın çatlak genişliğinin içten dışa doğru dört alana indirilebileceğini ve çatlak genişliklerinin farklı olduğunu göstermektedir. Yolun kazılmasından sonra, kömür ve kaya kütlesi içinde stres yoğunluğu oluşur. Kazı ile stres, kömürün ve kaya kütlesinin gücünü aşar ve başarısızlık meydana gelir ve stres yoğunlaşma fenomeni derin bir şekilde gelişmeye devam eder; karayolunun radyal yönü dört alana bölünmüştür: tamamen kırık bölge, çatlak azaltma bölgesi, çatlak sıkıştırma bölgesi ve proto-kaya benzeri alan.

Keywords

Maden Mühendisliği, Fissür, Surrounding rock of roadway, Numerical simulation

References

• Bi, Y.L., Li, X.L., Guo, N., (2020).Spatial heterogeneity of vegetation and soil nutrients induced by the open-pit mining in eastern grassland of China. Journal of Mining and Strata Control Engineering, 2(4): 047036.
• Cai, M.F., (2020). Key theories and technonogies for surrounding rock stability and ground control in deep mining. Journal of Mining and Strata Control Engineering, 2(3): 033037.
• Cai, Y.F., Li, X.J., Deng, W.N., Xiao, W., Zhang, W.K., (2020). Simulation of surface movement and deformation rules and detriment key parameters in high-strength mining. Journal of Mining and Strata Control Engineering, 2(4): 043511.
• Chai, J., Ou, Y. Y.B., Zhang, D.D., (2020a). Crackdetection method in similar material models based on DIC. Journal of Miningand Strata Control Engineering, 2(2): 023015.
• Chai, J., Ou, Y. Y.B., Zhang, D.D., Lei, W.L., (2020b). Theoretical analysis of the mechanical coupling between rock and optical fiber for distributed sensing of overlying strata deformation. Journal of Mining and Strata Control Engineering, 2020, 2(3): 033038.
• Chen, J., Gao, J.K., Pu, Y.Y., Jiang, D.Y., Qi, Q.X., Wen, Z. J., Sun, Q.L., Chen, L.L., (2021). Machine learning method for predicting and warning of rockbursts. Journal of Mining and Strata Control Engineering. 3(1): 013026.
• Chen, J.W., (2020). Analysis of roadheader's rotarytable on vibration modal based on finite element method and tested data. Journal of Mining and Strata Control Engineering, 2(2): 026032.
• Chen, S.L., Huang, B.X., Li, D., Zhao, X.L., Xu, J., Wang, C.W., (2020). Experiment study on the basic law of high pressure abrasive hydraulic cutting for coal-rock mass. Journal of Mining and Strata Control Engineering, 2(4): 047521.
• Cheng, J.W., Zhao, G., Sa, Z.Y., Zheng, W.C., Wang, Y.G., Liu, J., (2020). Overlying strata movement and deformation calculation prediction models for underground coal mines. Journal of Mining and Strata Control Engineering, 2(4): 043523.
• Fan, K., (2020). Sudden deformation characteristic and cutting-roof support technology for double-used roadways in Longtan Mine. Journal of Mining and Strata Control Engineering, 2(3): 033032.
• Fu, X., Wang R.F., (2020). Cooperative self-adaptive control model of fluid feeding system and hydraulic supports in working face. Journal of Mining and Strata Control Engineering, 2(3): 036031.
• Gao, F.Q., (2019). Use of numerical modeling for analyzing rock mechanicproblems in underground coal mine practices. Journal of Miningand StrataControl Engineering, 1(1): 013004.
• Hou, E.K., Cong, T., Xie, X.S., Wei, J.B., (2020) et al. Ground surface fracture development characteristics of shallow double coal seam staggered mining based on particle flow. Journal of Mining and Strata Control Engineering, 2(1): 013521.
• Hu, Q.F., Cui, X.M., Liu, W.K., Ma, T.J., Geng, H.R., (2020). Law ofoverburden and surface movement and deformation due to mining super thick coalseam. Journal of Mining and Strata Control Engineering, 2(2): 023021.
• Huang, F.R., Yan, S.X., Wang, X.L., Jiang, P. C., Zhan, S. B., (2021). Experimental study on infrared radiation characteristics of gneiss under uniaxial compression. Journal of Mining and Strata Control Engineering. 3(1), 013011.
• Jia, C., Hu C.C., (2020). Instability mechanism and control technology of longwall entries driving along the gob in a thick coal seam. Journal of Mining and Strata Control Engineering, 2(4): 043535.
• Kang, H.P. (2020). Spatial scale analysis on coalmining and strata control technologies. Journal of Mining and Strata Control Engineering, 2(2): 023538.
• Kang, H.P. (2021). Temporal scale analysis on coal mining and strata control technologies. Journal of Mining and Strata Control Engineering. 3(1), 013538.
• Li, J.H., Li, H.J., Li, Z.C., Wu, Z.Q., (2020a). Research on river dike failure of short-distance coal seams mining under Hunchun River. Journal of Mining and Strata Control Engineering, 2020, 2(1): 013538.
• Li, J.K., Wang, H., (2020b). Ground support of interbedded rock roof in a deep roadway with fully-anchored cables. Journal of Mining and Strata Control Engineering, 2(3): 033036.
• Li, J.Y., Wang, L., Jiang, K.G., Teng, C.Q., (2021). Parameter inversion method of probability integral model based on improved wolves algorithm. Journal of Mining and Strata Control Engineering. 3(1), 017038.
• Li, Y., Du G., (2020c). Reasonable width of narrow coal pillars in roadway driving with gas drainage hole. Journal of Mining and Strata Control Engineering, 2(1): 013007.
• Li, Y.P., Cui, F., Yang, W.H., Wei, C.X.Q., (2020d). Dynamic migration law and its control of roof in fully mechanized top coal caving mining in extremely steep and thick coal seams. Journal of Mining and Strata Control Engineering, 2(4): 043538.
• Liu, Y.X., Gao, M.S., Zhao, H.S., He, S.L., Li, Z.G., Zhang, Z.C., (2020). Detection of overlying rock structure and identification of key stratum bydrilling and logging technology. Journal of Mining and Strata Control Engineering, 2(2): 023038.
• Ma, W.Z., Zhou, X.M., Tan, S., (2020). Study on failure characteristics of coal seam floor above confined water: A case study of Shanxi Yitang Coal Mine. Journal of Mining and Strata Control Engineering, 2(3): 033011.
• Pan, H., Zhu, L., Zhang X.F., Gu, W.Z., Liu, Z.C., Li, J., Song, T.Q., Qiu, F.Q., (2020). Distribution characteristics of deviatoric stress and control technology of surrounding rock at temporary water chamber group in deep mining. Journal of Mining and Strata Control Engineering, 2(4): 043033.
• Ren, Y.F., (2020). Analysis and evaluation method for supporting ability of supports in coalmine working face. Journal of Mining and Strata Control Engineering, 2(3): 036012.
• Su, S.L., Du, Y., Zhu, J.F., Zhang, L., Zhao, Z.L., Meng, B., (2020). Numerical study on bearing behavior of layered rock mass for deep roadway. Journal of Mining and Strata Control Engineering, 2020, 2(1): 013002.
• Wang, D.L., Hao, B.Y., Liang, X.M. (2021a). Slurry diffusion of single fracture based on fluid-solid coupling. Journal of Mining and Strata Control Engineering. 3(1), 013038.
• Wang G.F., Pang Y.H., Ren H.W., (2020a). Intelligent coal mining pattern and technological path. Journal of Mining and Strata Control Engineering, 2(1): 013501.
• Wang, J., Wang, X.L. (2021b). Seepage characteristic and fracture development of protected seam caused by mining protecting strata. Journal of Mining and Strata Control Engineering. 3(3), 033511.
• Wang, J., Zhang, C., Zheng, D., Song, W.D., Ji, X.F., (2020b). Stability analysis of roof in goaf considering time effect. Journal of Mining and Strata Control Engineering, 2(1): 013011.
• Wang J.C., (2019). Sustainable coal mining based on mining ground control. Journal of Mining and Strata Control Engineering, 1(1): 013505.
• Wang, P., Zhang, B.S., Wang, L., Lin, X.Y., Song, X.F., Guo, J.Q., (2020c). Research onroof falling mechanism and support technology of mining roadway in expansivesoft rock. Journal of Mining and Strata Control Engineering, 2(2): 023022.
• Wang, X.L. (2018). Research on control technology and application of grouting reinforcement of deeper fragmenting coal and rock mass. [Dissertation]. [Chengdu]: Southwest Petroleum University.
• Wang, Y., Tu, M., Fu, B.J., Bu, Q.W., (2020d). Lateral mining-induced stress distributive property of deep mining and gob-side entry support. Journal of Mining and Strata Control Engineering, 2(3): 033012.
• Xia Y.X., Lu, C., Yang G.Y., Su, S.J., Pang, L.N., Ding, G.L., Su, B., (2020). Experimental study on axial fracture cutting and fracturing of abrasive jet in hard roof hole. Journal of Mining and Strata Control Engineering, 2(3): 033522.
• Xu, J.L., Xuan, D.Y., Zhu, W.B., Wang, X.Z., (2019). Partial backfilling coal mining technology based on key strata control. Journal of Mining and Strata Control Engineering, 1(1): 013504.
• Xu, N.Z., Gao, C., (2020). Study on the special rules of surface subsidence affected by normal faults. Journal of Mining and Strata Control Engineering, 2(1): 011007.
• Yang, D.F., Zhang, Y.J., Wang, S., Niu, C.H., Chai, J.L., (2020a). Analysis of the influence of hidden fault dip angle on ground pressure behavior in shallow seam roof. Journal of Mining and Strata Control Engineering, 2(4): 043038.
• Yang, G.H., Wang, K., Zhang X.Q., (2020b). Study on non-pillar mining technology of preset packing body and roof cutting in deep well roadway. Journal of Mining and Strata Control Engineering, 2(1): 013038.
• Yu, X.Y., Wang, Z.S., Yang, Y., Mao, X.W., (2021). Numerical study on the movement rule of overburden in fully mechanized caving mining with thick depth and high mining height. Journal of Mining and Strata Control Engineering. 3(1), 013533.
• Zhang, B.L., Shen, B.T., Zhang, J.H., Zhang, X.G., (2020a). Experimental study of edge-opened cracks propagation in rock-like materials. Journal of Mining and Strata Control Engineering, 2(3): 033035.
• Zang, C., Song, W.D., Fu, J.X., Li, Y., Zhang, K.C., (2020b). Technology for roadway management of fractured rock masses in a submarine gold mine. Journal of Mining and Strata Control Engineering, 2(3): 033039.
• Zhang, G.J., Yan, W., Jiang, K.G. (2021a). Inversion method for the prediction parameters of mining subsidence based on the PB combination prediction model of variable weight. Journal of Mining and Strata Control Engineering. 3(1), 013524.
• Zhang, K.X., Wang, X.L., He, M.C., Yin, S.X., Li, S.B., Sun, J.D., Li, D., Cheng, Z.H., Zhao, Q.F., Yin, S.F., Kang, L., Zhu, J.A., Yang, H.J., (2021b). Research on multi-level fuzzy comprehensive evaluation of the applicability of intelligent unmanned mining face. Journal of Mining and Strata Control Engineering. 3(1), 013532.
• Zhang, N., Han C.L., Xie Z.Z., (2019). Theory of continuous beam control and high efficiency supporting technology in coal roadway. Journal of Mining and Strata Control Engineering, 1(1): 013005.
• Zhang, T., Wang, Y.L., (2020c). Study on deformation evolution law and support technology of surrounding rock in multiple mining roadway. Journal of Mining and Strata Control Engineering, 2(2): 023016.
• Zhang, X.F., Qu, X.C., Wei, Q.D. (2021c). Development and application of multi-dimension multi-parameter monitoring and early warning platform of coalbursts. Journal of Mining and Strata Control Engineering. 3(1), 013013.
• Zhao, Q.C., Fu, B.J., (2020). Study on loose zonetesting and support technology of roadway surrounding rock affected by dynamic pressure. Journal of Mining and Strata Control Engineering, 2(2): 023031.
• Zhu, W., Teng, Y.H. (2021). Study on the safety and mining influence of fully-mechanized caving mining with ultra-thick seam under barrier lake. Journal of Mining and Strata Control Engineering. 3(1), 013525.
• Zhu, W.C., Niu, L.L., Li, S.H., Li, S., (2019). Creep-impact test of rock: Status-of-the-art and prospect. Journal of Mining and Strata Control Engineering, 1(1): 013003.
• Zuo, J.P., Yu, M.L., Hu, S.Y., Song, H.Q., Wei, X., Shi, Y., Zuo, S.H., (2019). Experimental investigation on fracture mode of different thick rock strata. Journal of Mining and Strata Control Engineering, 1(1): 013007.