Height prediction and three-dimensional development characteristics of water-conducting fracture zone in weakly cemented overburden

被引：0
|
作者：
Shi S. [1 ]
Wu F. [1 ]
Bian K. [1 ]
机构：
[1] School of Earth Science and Engineering, Hebei University of Engineering, Handan
来源：
Caikuang yu Anquan Gongcheng Xuebao/Journal of Mining and Safety Engineering | 2022年 / 39卷 / 06期
关键词：
Height of water-conducting fracture zone; Large mining height; Regression analysis; Three-dimensional spatial shape; Weakly cemented rock;
D O I：
10.13545/j.cnki.jmse.2021.0259
中图分类号：
学科分类号：
摘要：
In order to study the height prediction and three-dimensional development characteristics of the water-conducting fracture zone of weakly cemented rock in the Jurassic coalfield in western China, the height calculation formula was derived by the method of regression analysis based on 18 selected large mining height (>5 m) samples of measured height of water-conducting fracture zone. Compared with the empirical formula, the results of the regression formula have shown that the average error is reduced by 34.85%, and the prediction accuracy of the height of the water-conducting fracture zone is improved. Then, taking the 2201 working face of Yingpanhao coal mine as an example, the developmental slices of the water-conducting fracture zone at different positions in the spatial domain were obtained by numerical simulation. On this basis, a three-dimensional spatial shape map of the water-conducting fracture zone was drawn, which is a slightly inclined "arch-back" as a whole. Finally, the drilling section water injection observation system was used to measure the height and shape of the water-conducting fractured zone. The comparison of the results verified the accuracy of the regression formula and numerical simulation. © 2022, Editorial Board of Journal of Mining & Safety Engineering. All right reserved.
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页码：1154 / 1160
页数：6
相关论文
共 18 条
  • [1] HU Weiyue, TIAN Gan, Mine water disaster type and prevention and control countermeasures in China, Coal Science & Technology, 38, 1, pp. 92-96, (2010)
  • [2] LI Wenping, WANG Qiqing, LIU Shiliang, Et al., Grade types of water-preserved coal mining coalmines in ecologically fragile area, Journal of China Coal Society, 44, 3, pp. 718-726, (2019)
  • [3] ZHANG Yan, Research results and directions of water-flowing fractured zone, Coal Technology, 34, 2, pp. 121-122, (2015)
  • [4] ZHANG Debao, ZHANG Zhigang, Anchor net spray and steel bracket combined supporting technology research on weakly cemented soft rock roadway, Journal of Liaoning Technical University (Natural Science), 34, 4, pp. 447-452, (2015)
  • [5] (2014)
  • [6] (2017)
  • [7] WEI Jiuchuan, WU Fuzhu, XIE Daolei, Et al., Development characteristic of water flowing fractured zone under semi-cemented medium-low strength country rock, Journal of China Coal Society, 41, 4, pp. 974-983, (2016)
  • [8] XUE Jiankun, WANG Hao, ZHAO Chunhu, Et al., Prediction of the height of water-conducting fracture zone and water-filling model of roof aquifer in Jurassic coalfield in Ordos Basin, Journal of Mining & Safety Engineering, 37, 6, pp. 1222-1230, (2020)
  • [9] LYU Wenhong, Measure and simulation for development height of water conducted crack zone in overburden roof, Journal of Xi'an University of Science and Technology, 34, 3, pp. 309-313, (2014)
  • [10] PAN Jianguo, Mining method selection of No. 3 very thick coal seam of Hanglaiwan Mine, China Mine Engineering, 41, 5, pp. 42-44, (2012)
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