Characteristics of aquiclude and surface deformation in continuous mining and filling with wall system for water conservation

被引：0

作者：

Ma L. ^{[1
,2
]}

Xu Y. ^{[2
]}

Zhang D. ^{[2
]}

Lai X. ^{[1
]}

Huang K. ^{[3
]}

Du H. ^{[4
]}

机构：

[1] Key Laboratory of Mine Geological Hazards Mechanism and Control, Xi'an, 710054, Shaanxi

[2] Key Laboratory of Deep Coal Resource Mining, School of Mines, China University of Mining & Technology, Xuzhou, 221116, Jiangsu

[3] Shaanxi Coal and Chemical Technology Institute CoLtd, Xi'an, 710065, Shaanxi

[4] Technology Center, Jincheng Anthracite Mining Group, Jincheng, 048000, Shanxi

来源：

Caikuang yu Anquan Gongcheng Xuebao/Journal of Mining and Safety Engineering | 2019年 / 36卷 / 01期

关键词：

Aquiclude; Continuous mining and filling with wall system; Filling while mining; Surface; Water-preserved min-ing;

D O I：

10.13545/j.cnki.jmse.2019.01.005

中图分类号：

学科分类号：

摘要：

In order to solve the issues in traditional long wall' filling while mining' method, e.g. the shortage of filling space and the difficulty in coordination between coal mining and filling operation, the continuous mining and filling with wall system for water conservation were put forward. First, the whole mining section is divided into three systems of carrying coal, carrying materials and ventilation. Then all the roadway in mining block is divided into several mining stages, and interval mining is adopted in each mining stage. When each roadway is completed, it is filled immediately until all the roadway in the mining stage is mined and filled. The roadway in next stage will then be mined and filled, ultimately achieving the water-preserved mining. Meanwhile, the aquiclude and surface deformation in continuous mining and backfilling is studied by laboratory physical simulation and field tests. Results show that the maximum aquiclude deformation is less than 2~3 mm/m after the mining and filling at all stages. The aquiclude is still waterproof, therefore, the water-preserved mining is realized. When the recovery rate of block is more than 90%, the maximum value of surface deformation is less than the Grade I damage index. © 2019, Editorial Board of Journal of Mining & Safety Engineering. All right reserved.

引用

页码：30 / 36

页数：6

共 22 条

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