侏罗纪浅埋煤层开采典型水害模式及分区  

Typical model of water damage in Jurassic shallow coal seam mining and its zoning

作　　者：苗彦平 蔚波 姬中奎 陈小绳 路波 薛小渊 MIAO Yanping;YU Bo;JI Zhongkui;CHEN Xiaosheng;LU Bo;XUE Xiaoyuan(Shenmu Hongliulin Mining Co.,Ltd.,Shanmei Group,Shenmu 719300,China;China Coal Research Institute,Beijing 100013,China;China Coal Technology&Engineering Group Xi’an Research Institute,Xi’an 710077,China;Key Laboratory of Coal Mine Water Hazard Prevention and Control Technology in Shaanxi Province,Xi’an 710077,China;Shaanxi Engineering Research Center of Mine Ecological Environment Protection and Restoration in the Middle of Yellow River Basin,Xi’an 710077,China)

机构地区：[1]陕煤集团神木红柳林矿业有限公司,陕西神木719316 [2]煤炭科学研究总院,北京100013 [3]中煤科工集团西安研究院有限公司,陕西西安710077 [4]陕西省煤矿水害防治技术重点实验室,陕西西安710077 [5]陕西省“四主体一联合”黄河流域中段矿区(煤矿)生态环境保护与修复校企联合研究中心,陕西西安710077

出　　处：《煤矿安全》2021年第8期75-82,共8页Safety in Coal Mines

基　　金：天地科技股份有限公司科技创新基金资助项目(2018-TD-QN052);中煤科工集团西安研究院科技创新基金资助项目(2018XAYZD11);国家自然科学基金资助项目(41807221)。

摘　　要：陕北煤炭基地侏罗纪浅部煤层开采面临多种水害威胁,传统煤矿水害危险性评价工作未充分结合研究区典型水害特点,在生产实际中的适用性不强。以红柳林煤矿3-1煤层为研究对象,系统分析煤层开采面临的典型水害特征,计算煤层开采的导水断裂带发育高度,并绘制导水裂隙带发育高度等值线图,利用主要含水层(体)与导水断裂带之间的相对距离关系,提出基于煤矿充水含水层(体)特征的水害模式划分方法,并在研究区内针对不同水害模式进行分区。结果表明:按照区域内充水含水层(体)的不同,研究区水害类型可划分为单一含水层水害模式和复合含水层水害模式和古直罗河水害模式3种主要水害模式;按照充水水源不同,单一含水层水害模式可划分为顶板烧变岩水害型、顶板风化基岩水害型;复合含水层水害模式可分为顶板烧变岩直接-松散层间接水害型、顶板风化基岩直接-松散层直接水害型、顶板烧变岩直接-松散层直接水害型以及顶板风化基岩直接-松散层间接水害型;单一含水层水害模式主要分布于导水断裂带波及顶板风化基岩含水层及开采煤层上方存在隐伏烧变岩含水层区域;复合型含水层水害模式分布于导水断裂带突破风化基岩含水层,直接或间接波及松散层含水层区域;古直罗河水害模式分布于古直罗河及古河流阶地发育之处;对不同水害模式下突水风险性进行分析,烧变岩水害型一般不对煤层开采构成较大威胁,突水风险性较小;顶板风化基岩水害型、顶板复合水害模式及古直罗河水害模式在部分区域为强富水性,且可能通过导水断裂带进入井下,均存在一定突水风险。The mining of Jurassic shallow coal seam in northern Shaanxi coal base is faced with a variety of water hazards, and the traditional coal mine water hazard assessment has some limitations, so it is necessary to carry out more detailed water hazard model and zoning research in this area. Taking 3-1 coal seam of Hongliulin Coal Mine as the research object, we calculate the development height of water flowing fractured zone in coal mining, draw the contour map of development height of water flowing fractured zone, and propose the water disaster mode division method based on coal mine water disaster types by using the mutual position relationship between each aquifer and water flowing height, and divide different water disaster modes in the study area.The results show that: according to the different water filled aquifers(bodies) in the study area, the water damage types can be divided into three main water damage modes: single aquifer water damage mode, composite aquifer water damage mode and ancient Zhiluo river water damage mode. According to different water filling sources, the single aquifer water damage model can be divided into roof burnt rock water damage type and roof weathered bedrock water damage type;the composite aquifer water damage model can be divided into roof burnt rock direct-loose layer indirect water damage type, roof weathered bedrock direct-loose layer direct water damage type, roof burnt rock direct-loose layer direct water damage type and roof weathered bedrock direct-loose layer direct water damage type water damage type. The single aquifer water damage model is mainly distributed in the water flowing fracture zone, roof weathered bedrock aquifer and the area with hidden burnt rock aquifer above the mining coal seam;the composite aquifer water damage model is distributed in the water flowing fracture zone breaking through weathered bedrock aquifer, directly or indirectly affecting the loose aquifer area;the ancient Zhiluo river water damage model is distributed in the ancient Zhiluo river an

关 键 词：侏罗纪煤田 浅埋煤层 导水断裂带 典型水害模式 水害模式分区 

分 类 号：TD745.21[矿业工程—矿井通风与安全]