Showing 161 - 180 results of 750 for search '"coal mines"', query time: 0.08s Refine Results
  1. 161
  2. 162
  3. 163
  4. 164
  5. 165

    Exploration and Practice of Pressure Relief by Slotting Coal Seams with a Diamond Wire Saw by Zhu Tang, Shuqing Li, Fei Huang, Shouqing Huang, Kangxu Cai

    Published 2021-01-01
    “…To safely and economically eliminate the threat of high geostress in the coal mining process, based on the engineering case study of pressure relief by slotting residual coal pillars at a mine in the Kailuan mining area, a method of pressure relief by slotting coal seams with a wire saw was explored, and numerical simulation was carried out. …”
    Get full text
    Article
  6. 166
  7. 167
  8. 168
  9. 169
  10. 170

    Three-Dimensional Physical Simulation and Control Technology of Roof Movement Characteristics in Non-Pillar Gob-Side Entry Retaining by Roof Cutting by Xinzhu Hua, Guanfeng Chang, Xiao Liu, Bingjun Sun, Sen Yang, Enqian Wang, Chen Li

    Published 2021-01-01
    “…On the bases of the actual geological conditions of II 632 Haulage Roadway at the Hengyuan coal mine, a similar three-dimensional simulation experiment of roof precutting is conducted. …”
    Get full text
    Article
  11. 171
  12. 172
  13. 173

    Study on the Interaction between Low-Viscosity High-Permeability Pregrouting Sealing Material and Coal and Its Application by Yujia Chen, Ao Li, Dingding Yang, Tianyu Liu, Xiaowei Li, Jun Tang, Chenglin Jiang

    Published 2020-01-01
    “…In order to ensure the intactness of pressure-measuring boreholes and the accuracy of gas pressure determination, pregrouting treatment with polymer materials is frequently applied to bedding drilling in coal mines. However, the existing polyurethane materials are of high viscosity, low permeability, and poor safety, bringing great difficulties to their field promotion and application. …”
    Get full text
    Article
  14. 174
  15. 175
  16. 176

    A Study on the Influence of Mining Depth on the Stress Distribution Characteristics of Stope Surrounding Rock by Shaobo Li, Lei Wang, Qihan Ren, Chuanqi Zhu, Huaqiang Liu, Huaiqian Liu, Lipeng Chen

    Published 2022-01-01
    “…In order to study the influence law of mining depth on stope strata behavior, taking 11318E fully mechanized working face in Xieqiao Coal Mine of Huainan Mining Group as the engineering background, the stress distribution and evolution characteristics of stope surrounding rock under mining depth were studied by similar material simulation. …”
    Get full text
    Article
  17. 177
  18. 178
  19. 179
  20. 180