Steeply Inclined Working Face Floor Stress Distribution and Supporting Research

Ma Shuyin

doi:doi:10.11648/j.eas.20190406.13

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Steeply Inclined Working Face Floor Stress Distribution and Supporting Research

Ma Shuyin

Published in Engineering and Applied Sciences (Volume 4, Issue 6)

Received: 14 November 2019 Accepted: 2 December 2019 Published: 7 December 2019

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Abstract

In order to obtain Stress distribution and damage law of Steeply inclined working face floor，this paper combined elastic-plastic mechanics theory to improve model of the half-infinite body model，and the three-dimensional half-infinite body model was established which comprehensively considered the stress characteristics in the strike and inclined directions of the working face，and the iterative formula of vertical stress in floors was calculated. Meanwhile，the three-dimensional stress distributions in floors with different depths were calculated by Software-MATHCAD and SUFER. The numerical simulation was applied to simulate no supporting condition and temporary supporting with Cement Based Grouting Material condition in fully-mechanized coal caving face of steeply inclined coal seam and obtained the corresponding plastic damage zone. According to the empirical formula calculated formula floor damage depth of 10.4m, and the application of cement grouting material was carried out on the floor, temporary support, in the working face, the lower floor heave amount reduced 28.7%, in the working face, the upper floor heave amount reduced 22.4%, and the supporting method can effectively control the floor damage. The results show that provided a theoretical basis for the floor management of steep coal seam working face.

Published in	Engineering and Applied Sciences (Volume 4, Issue 6)
DOI	10.11648/j.eas.20190406.13
Page(s)	149-153
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Steeply Inclined Working Face, Stress Distribution, Numerical Modeling, The Grouting Support

References

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[4]	CAO Shu-gang, XU Guang-ming, CHEN Lin-dun. Panel roadway floor stress distribution [J]. Ground Pressure and Strata Control, 1993, 10 (Supp): 177-180.
[5]	ZHU Shu-yun, JIANG Zhen-quan, YAO Pu, et al. Application of analytic method in calculating floor stress of a working face [J]. Journal of Mining and Safety Engineering, 2007, 24 (2): 191-195.
[6]	ZHANG Hua-lei, WANG Lian-guo. Computation of mining induced floor additional stress and its application [J]. Journal of Mining and Safety Engineering, 2011, 28 (2): 288-293.
[7]	WANG Lian-guo, HAN Meng, WANG Zhan-sheng et al. Stress distribution and damage law of mining floor [J]. Journal of Mining and Safety Engineering, 2013, 30 (3): 317-322.
[8]	LI Xiang-yang, LI Jun-ping, ZHOU Chuang-bing, Xiang wen-fei et al. Comparative study on numerical simulation and similarity simulation of overburden deformation in abandoned stope [J]. Rock and Soil Mechanics, 2005, 26 (12): 1907-1912.
[9]	GAO Zhao-ning, MENG Xiang-rui. Study on Deformation and Fracturing Characteristics of Seam Floor under Mining Influence [J]. mining safety & environmental protection. 2010, 37 (3): 17-20.
[10]	ZHANG Yong etc. Damage and Slip Mechanism of Floor in Longwall Mining on the Strike of Steep and Thick Coal Seam [J]. Coal Science and Technology, 2013, 41 (10): 9-12.
[11]	XUN Yan-chun, YANG Yang etc. Applicability Analysis on Statistical Formula for FailureDepth of Coal Seam Floor in Deep Mine [J]. Coal Sci-ence and Technology, 2013, 41 (9): 129-132.
[12]	YANG Sheng-li, ZHAO Bin, LI Liang-hui. Coal wall failure mechanism of longwall working face with false dip in steep coal seam [J]. Journal of China Coal Socity. 2019, 44 (2): 367-376.
[13]	WANG Nan, ZHENG Shangshang, LI Shanshan, KONG Dezhong. Stability Analysis of End Face Roof of Steep Inclined Coal Seam [J]. Safety in Coal Mines, 2019, 50 (6): 235-239.
[14]	CHENG Wei-min，SUN Lu-lu, WANG Gang et c. Similar material simulation test of steep-inclined extra-thick coal seam [J]. Journal of Mining & Safety Engineering. 2016, 33 (3): 387-392.
[15]	ZHANG Pingsong，WU Jiwen, LIU Shengdong. Study on dynamic observation of coal seam floor’s failure law [J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25 (Sup 1): 3009-3013.

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APA Style

Ma Shuyin. (2019). Steeply Inclined Working Face Floor Stress Distribution and Supporting Research. Engineering and Applied Sciences, 4(6), 149-153. https://doi.org/10.11648/j.eas.20190406.13

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ACS Style

Ma Shuyin. Steeply Inclined Working Face Floor Stress Distribution and Supporting Research. Eng. Appl. Sci. 2019, 4(6), 149-153. doi: 10.11648/j.eas.20190406.13

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AMA Style

Ma Shuyin. Steeply Inclined Working Face Floor Stress Distribution and Supporting Research. Eng Appl Sci. 2019;4(6):149-153. doi: 10.11648/j.eas.20190406.13

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@article{10.11648/j.eas.20190406.13,
  author = {Ma Shuyin},
  title = {Steeply Inclined Working Face Floor Stress Distribution and Supporting Research},
  journal = {Engineering and Applied Sciences},
  volume = {4},
  number = {6},
  pages = {149-153},
  doi = {10.11648/j.eas.20190406.13},
  url = {https://doi.org/10.11648/j.eas.20190406.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.eas.20190406.13},
  abstract = {In order to obtain Stress distribution and damage law of Steeply inclined working face floor，this paper combined elastic-plastic mechanics theory to improve model of the half-infinite body model，and the three-dimensional half-infinite body model was established which comprehensively considered the stress characteristics in the strike and inclined directions of the working face，and the iterative formula of vertical stress in floors was calculated. Meanwhile，the three-dimensional stress distributions in floors with different depths were calculated by Software-MATHCAD and SUFER. The numerical simulation was applied to simulate no supporting condition and temporary supporting with Cement Based Grouting Material condition in fully-mechanized coal caving face of steeply inclined coal seam and obtained the corresponding plastic damage zone. According to the empirical formula calculated formula floor damage depth of 10.4m, and the application of cement grouting material was carried out on the floor, temporary support, in the working face, the lower floor heave amount reduced 28.7%, in the working face, the upper floor heave amount reduced 22.4%, and the supporting method can effectively control the floor damage. The results show that provided a theoretical basis for the floor management of steep coal seam working face.},
 year = {2019}
}

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TY  - JOUR
T1  - Steeply Inclined Working Face Floor Stress Distribution and Supporting Research
AU  - Ma Shuyin
Y1  - 2019/12/07
PY  - 2019
N1  - https://doi.org/10.11648/j.eas.20190406.13
DO  - 10.11648/j.eas.20190406.13
T2  - Engineering and Applied Sciences
JF  - Engineering and Applied Sciences
JO  - Engineering and Applied Sciences
SP  - 149
EP  - 153
PB  - Science Publishing Group
SN  - 2575-1468
UR  - https://doi.org/10.11648/j.eas.20190406.13
AB  - In order to obtain Stress distribution and damage law of Steeply inclined working face floor，this paper combined elastic-plastic mechanics theory to improve model of the half-infinite body model，and the three-dimensional half-infinite body model was established which comprehensively considered the stress characteristics in the strike and inclined directions of the working face，and the iterative formula of vertical stress in floors was calculated. Meanwhile，the three-dimensional stress distributions in floors with different depths were calculated by Software-MATHCAD and SUFER. The numerical simulation was applied to simulate no supporting condition and temporary supporting with Cement Based Grouting Material condition in fully-mechanized coal caving face of steeply inclined coal seam and obtained the corresponding plastic damage zone. According to the empirical formula calculated formula floor damage depth of 10.4m, and the application of cement grouting material was carried out on the floor, temporary support, in the working face, the lower floor heave amount reduced 28.7%, in the working face, the upper floor heave amount reduced 22.4%, and the supporting method can effectively control the floor damage. The results show that provided a theoretical basis for the floor management of steep coal seam working face.
VL  - 4
IS  - 6
ER  -

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Author Information

Ma Shuyin

China Coal Technology and Engineering Group Chongqing Research Institute, Chongqing, China; State Key Laboratory of the Gas Disaster Detecting Preventing and Emergency Controlling, Chongqing, China

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Plain Text BibTeX RIS

APA Style

Ma Shuyin. (2019). Steeply Inclined Working Face Floor Stress Distribution and Supporting Research. Engineering and Applied Sciences, 4(6), 149-153. https://doi.org/10.11648/j.eas.20190406.13

Copy | Download

ACS Style

Ma Shuyin. Steeply Inclined Working Face Floor Stress Distribution and Supporting Research. Eng. Appl. Sci. 2019, 4(6), 149-153. doi: 10.11648/j.eas.20190406.13

Copy | Download

AMA Style

Ma Shuyin. Steeply Inclined Working Face Floor Stress Distribution and Supporting Research. Eng Appl Sci. 2019;4(6):149-153. doi: 10.11648/j.eas.20190406.13

Copy | Download

@article{10.11648/j.eas.20190406.13,
  author = {Ma Shuyin},
  title = {Steeply Inclined Working Face Floor Stress Distribution and Supporting Research},
  journal = {Engineering and Applied Sciences},
  volume = {4},
  number = {6},
  pages = {149-153},
  doi = {10.11648/j.eas.20190406.13},
  url = {https://doi.org/10.11648/j.eas.20190406.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.eas.20190406.13},
  abstract = {In order to obtain Stress distribution and damage law of Steeply inclined working face floor，this paper combined elastic-plastic mechanics theory to improve model of the half-infinite body model，and the three-dimensional half-infinite body model was established which comprehensively considered the stress characteristics in the strike and inclined directions of the working face，and the iterative formula of vertical stress in floors was calculated. Meanwhile，the three-dimensional stress distributions in floors with different depths were calculated by Software-MATHCAD and SUFER. The numerical simulation was applied to simulate no supporting condition and temporary supporting with Cement Based Grouting Material condition in fully-mechanized coal caving face of steeply inclined coal seam and obtained the corresponding plastic damage zone. According to the empirical formula calculated formula floor damage depth of 10.4m, and the application of cement grouting material was carried out on the floor, temporary support, in the working face, the lower floor heave amount reduced 28.7%, in the working face, the upper floor heave amount reduced 22.4%, and the supporting method can effectively control the floor damage. The results show that provided a theoretical basis for the floor management of steep coal seam working face.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - Steeply Inclined Working Face Floor Stress Distribution and Supporting Research
AU  - Ma Shuyin
Y1  - 2019/12/07
PY  - 2019
N1  - https://doi.org/10.11648/j.eas.20190406.13
DO  - 10.11648/j.eas.20190406.13
T2  - Engineering and Applied Sciences
JF  - Engineering and Applied Sciences
JO  - Engineering and Applied Sciences
SP  - 149
EP  - 153
PB  - Science Publishing Group
SN  - 2575-1468
UR  - https://doi.org/10.11648/j.eas.20190406.13
AB  - In order to obtain Stress distribution and damage law of Steeply inclined working face floor，this paper combined elastic-plastic mechanics theory to improve model of the half-infinite body model，and the three-dimensional half-infinite body model was established which comprehensively considered the stress characteristics in the strike and inclined directions of the working face，and the iterative formula of vertical stress in floors was calculated. Meanwhile，the three-dimensional stress distributions in floors with different depths were calculated by Software-MATHCAD and SUFER. The numerical simulation was applied to simulate no supporting condition and temporary supporting with Cement Based Grouting Material condition in fully-mechanized coal caving face of steeply inclined coal seam and obtained the corresponding plastic damage zone. According to the empirical formula calculated formula floor damage depth of 10.4m, and the application of cement grouting material was carried out on the floor, temporary support, in the working face, the lower floor heave amount reduced 28.7%, in the working face, the upper floor heave amount reduced 22.4%, and the supporting method can effectively control the floor damage. The results show that provided a theoretical basis for the floor management of steep coal seam working face.
VL  - 4
IS  - 6
ER  -

Copy | Download