采矿与安全工程学报 ›› 2015, Vol. 32 ›› Issue (6): 898-904.

• 论文 • 上一篇    下一篇

基于未确知测度理论的薄基岩厚松散含水层下煤层安全开采区域划定

  

  1. 1.中南大学资源与安全工程学院,湖南长沙 410083;2.金诚信矿业管理股份有限公司武山项目经理部,江西 九江 332204;3.湖南工学院安全与环境工程学院,湖南衡阳 421002; 4.淮北矿业集团海孜矿,安徽淮北 235146;5.淮北矿业集团桃园矿,安徽淮北 234116
  • 收稿日期:2014-06-10 出版日期:2015-11-15 发布日期:2015-12-04
  • 作者简介:曾佳龙(1988—),男,湖南省湘潭市人,研究生,从事矿山深部开采水能资源方面的研究。
  • 基金资助:

    国家自然科学基金项目(51206191);中南大学自由探索计划课题项目(2011QNZT084)

Safety area delimiting of coal mining under thick loosened aquifer with thin bedrock based on unascertained measure theory

  • Received:2014-06-10 Online:2015-11-15 Published:2015-12-04

摘要: 厚松散层底部含水层单位涌水量、厚松散层底部黏土层厚度、覆岩厚度、导水断裂带高度和采高5 个因素为影响薄基岩厚松散含水层下采煤安全性的关键因素。将关键因素进行处理分析,找到关键因素影响开采安全性的4 个联结点,即底部含水层单位涌水量、覆岩厚度与采高平方根之比、底部黏土层层厚与采高之比、导水断裂带高度与采高平方根之比4 个评价因子。将评价因子划分为5 个等级,进而量化开采安全性。引入信息熵和未确知测度理论,建立综合评价模型,以某矿105 个钻孔数据为例,进行开采安全性评价,并根据评价结果对可安全开采区域进行划定和预测。将评价、划定和预测结果,同工程实践及已有研究结果进行对比,发现吻合度较高。结果表明,在所研究的煤层赋存条件下未确知测度模型是可行的、有效的。

关键词: 薄基岩厚松散含水层, 安全开采区域, 未确知测度,

Abstract: The specific yield of aquifer at the bottom of thick unconsolidated layers, thickness of clay layer at the bottom of thick unconsolidated layers, thickness of strata, water flowing fracture height and mining height are five key factors for safety mining under thick unconsolidated aquifer with thin bedrock. By analyzing and processing the key factors, four junction points influenced the mining safety were found out, namely, the unit water inflow in bottom aquifer, the ratio of overburden thickness and mining height’s square root, the ratio of the thickness of bottom clay layer and mining height, and the ratio of water flowing fracture height and mining height’s square root. Evaluation factors were divided into five grades, to quantify the mining safety. The information entropy and unascertained measure theory were introduced to establish comprehensive evaluation model. 105 drilling data in one mine were used to evaluate mining safety, divide and predict the safety mining area according to the evaluation results. The evaluation and prediction results are quite consistent with the engineering practice and existing research results. The results show that the unascertained measurement model is feasible and effective under the studied coal seam condition.

Key words: thick loosened aquifer with thin bedrock, safety mining area, unascertained measure, entropy