煤炭地下气化中煤种类对地表移动规律的影响  

Influence on Surface Movement Law of Coal Types on Underground Coal Gasification

作　　者：徐友友 郭广礼[1,2] 李怀展 王志勇[1,2] 覃双煜 XU You-you;GUO Guang-li;LI Huai-zhan;WANG Zhi-yong;QIN Shuang-yu(NASG Key Laboratory of Land Environment and Disaster Monitoring,China University of Mining and Technology,Xuzhou 221116,China;Jiangsu Key Laboratory of Resources and Environment Information Engineering,Xuzhou 221116,China)

机构地区：[1]中国矿业大学国土环境灾害监测国家测绘地理信息局重点实验室,江苏徐州221116 [2]江苏省资源环境信息工程重点实验室,江苏徐州221116

出　　处：《煤炭技术》2019年第7期115-117,共3页Coal Technology

基　　金：国家自然科学基金青年项目(51804301);国家自然科学基金面上项目(51674249);江苏省青年科学基金项目(BK20180661)

摘　　要：为了研究煤炭地下气化地表移动规律,采用数值模拟方法研究了不同煤炭种类地下气化的地表移动规律,初步揭示了气化煤种与地表移动的内在关系.研究表明:煤炭黏结性是影响气化通道两侧煤柱体强度变化的主要内在影响因素;强黏结性煤高温形成的干馏组合碹强度超过一定范围后将随着采高的增大而产生破坏,造成下沉量增大异常.To identify and grasp the surface movement rejularity of the underground coal gasification,have established a numerical model to study the surface movement rejularity.Then grasped the relationship of surface movement rejularity with coal types on underground coal gasification.Results show that strong caking coal has smaller surface subsidence and movement basin than weak caking coal;strong caking coal has bigger surface subsidence due to the the strength droping with the mining height over the range.

关 键 词：煤炭地下气化 煤种类 移动变形 地表沉陷 数值模拟 

分 类 号：TD325[矿业工程—矿井建设]