榆神矿区导水裂隙带高度多因素影响规律及保水采煤分区  

Multi-factor Contribution to the Height of Water-conducting Fracture Zone and Mine Zoning for Water Protection in Yushen Coalfield

作　　者：张帅[1,2] 冯国瑞[1,2] 张东升[3] 蔚蔚[3] ZHANG Shuai;FENG Guorui;ZHANG Dongsheng;YU Wei(College of Mining Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Green Mining Engineering Technology Research Center,Taiyuan University of Technology,Taiyuan 030024,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]太原理工大学矿业工程学院,太原030024 [2]太原理工大学山西省绿色采矿工程技术研究中心,太原030024 [3]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221116

出　　处：《太原理工大学学报》2023年第2期301-312,共12页Journal of Taiyuan University of Technology

基　　金：国家杰出青年科学基金项目(51925402);国家自然科学联合基金重点项目(U1710258);山西省基础研究计划资助项目(20220321212252);山西省高等学校科技创新资助项目(2022L054);太原理工大学2022年校专项/青年基金项目(2022QN071)。

摘　　要：通过融合数理统计、多元回归与空间分析方法,分析了导水裂隙带发育高度受多种因素影响规律,构建了综采导水裂隙带高度与煤层采高、采深、开采推进速度多因素之间的非线性统计关系式;基于导水裂隙带经验公式及保水采煤阈值,将榆神矿区划分为五类,工况一条件下矿区内基于水资源保护的安全开采区域(WRSE)面积为4.24×10^(9)m^(2),占比为82%;基于水资源保护的非安全开采区域(Non-WRSE)的面积为920 835 911.3 m2,占比为18%;工况二条件下矿区内WRSE的面积为3.87×10^(9)m^(2),占比为77%;Non-WRSE的面积为1.14×10^(9)m^(2),占比为23%;工况三条件下矿区内WRSE的面积为3.78×10^(9)m^(2),占比为73%;Non-WRSE的面积为1.38×10^(9)m^(2),占比为27%;对比研究3种工况预测的保水采煤分区数据,以保水采煤分区结果确定了规划矿井的保水等级,确定了重点保护矿井。项目研究成果可为矿区合理地开采规划和设计提供宏观决策依据,进一步完善保水开采理论与技术体系。Predicting the Water-conducting fracture zone height(WFZH) and determining the mining zones that require water conservation operations are critical for the mine sustainability. In this paper, mathematical statistics, multiple regression and spatial analysis methods were employed to analyze the mechanisms of longwall parameters contributing to WFZH and construct a nonlinear correlation of WFZH versus mining height, depth of cover, and retreat rate. Based on the WFZH equation and aquifer depressurization threshold, Yushen Coalfield is zoned into different conditions: Under the case 1, the water resources safe exploitation(WRSE) area in the mining area is 4.24×10^(9)m^(2), accounting for 82%, and Non-WRSE area is 920 835 911.3 m~2, accounting for 18%;Under the case 2, the WRSE area in the mining area is 3.87×10^(9)m^(2), accounting for 77%, and Non-WRSE area is 1.14×10^(9)m^(2), accounting for 23%;Under the case 3, the WRSE area in the mining area is 3.78×10^(9)m^(2), accounting for 73%, and Non-WRSE area is 1.38×10^(9)m^(2), accounting for 27%. The water protection level is further detailed by comparing the three conditions, further suggesting the mine that needs higher focus. The results help provide macro decision-making basis for mine planning and longwall design, enriching the theory and technology for water conservation mining.

关 键 词：榆神矿区 多因素影响 导水裂隙带 采煤分区 保水开采 

分 类 号：TD745[矿业工程—矿井通风与安全]