黏土隔水层抗采动能力试验研究  

Experimental Study of Resistance to Mining Influence Ability of Clay Aquiclude

作　　者：刘治国[1,2] 樊振丽[1,2] 张玉军[1,2] 宋业杰[1,2] 

机构地区：[1]煤炭科学研究总院开采研究分院,北京100013 [2]天地科技股份有限公司,北京100013

出　　处：《煤炭技术》2017年第12期63-65,共3页Coal Technology

基　　金：国家自然科学基金(51704161);中国煤炭科工集团科技创新基金面上项目(2016MS011);天地科技"公司研发项目"开采生产力转化基金(KJ-2015-TDKC-04)

摘　　要：基于榆神矿区基岩上部赋存厚层黏土隔水层的地质采矿条件,采用实验室试验的方法,对黏土隔水层的物理、力学、水理、矿物成分、膨胀性等参数和性质进行了测试和分析,通过三轴应力应变渗透性试验,提出了黏性土受采动影响具有自愈性特征的观点。试验结果表明:黏土具有较大的内摩擦角和黏聚力,黏土隔水层中黏土矿物含量高、膨胀性好;红土层受采动扰动后重塑土样表现出较强的塑性特征,是该区优良的隔水关键层。Based on the type of thick clay aquiclude upper bed rock of geology and mining conditions in Yulin-Shenmu coal mine areas, adopted laboratory test methods to research its physics,mechanics, water,mineral composition,swelling and other parometers and properties, and put forward the point of view that cohesive soil affected by mining has self-healing characteristic. The test results show that the clay has larger internal friction angles and cohesion force, and the clay aquiclude has high clay mineral content and good expansibility; the red restoring soil sample with mining disturbances showed stronger plasticity characteristics, it is a excellent waterproof layer.

关 键 词：黏土隔水层 抗采动能力 渗透性试验 地层自愈性 

分 类 号：P588.2[天文地球—岩石学]