基于原位实测的下组煤底板岩层阻渗性研究  

A study of the impermeability of the lower coal seam floor rocks at the Yanzhou coalfield based on in-situ test

作　　者：刘瑞新[1] 曹丁涛[1] 胡东祥[1] 

机构地区：[1]兖州煤业股份有限公司,山东邹城273500

出　　处：《水文地质工程地质》2016年第1期105-110,共6页Hydrogeology & Engineering Geology

摘　　要：为探究兖州矿区下组煤底板岩层阻渗能力,采用现场压水试验的方法,对兖州煤田16个底板岩层进行了压渗测试,获取了大量的实测数据。在分析实测数据的基础上,提出了太原组煤系底板不同结构及岩性组合的阻渗强度建议值,建立了下组煤底板岩层阻渗条件评价模型,以此做为下组煤带压开采安全与否的量化评价依据。研究成果比较真实地反映了下组煤底板岩层阻渗条件,经现场验证效果较好,对下组煤底板带压安全开采起到了重要的指导作用。In order to examine the impermeability of the rock under the lower coal seam floor for providing the quantitative reference basis for mining security,the in-situ water injection test was conducted to measure sixteen floor rocks, and numerous data were obtained. Based on the test results, we proposed an impermeability value of different rock structures and rock association for the lower coal seam floor. The assessment system was built to reflect the true water inrush condition. The result can better reflect the actual impermeability condition and can provide an important reference for enriching the warning technology to mining the lower coal seam under a high water pressure.

关 键 词：兖州煤田 下组煤 底板阻渗性 原位测试 危险性评价 

分 类 号：P641.5[天文地球—地质矿产勘探]