煤矿综采工作面顶板灾害预警指标及应用研究  

Study on early warning index of roof disaster and application to fully-mechanized coal mining face in underground mine

作　　者：安泽[1] 张江云 

机构地区：[1]北京工业职业技术学院建筑与测绘工程学院,北京100043 [2]四川省煤炭产业集团四川攀枝花煤业(集团)有限责任公司,四川攀枝花617066

出　　处：《煤炭科学技术》2015年第5期37-41,共5页Coal Science and Technology

基　　金："十二五"国家科技支撑计划资助项目(2012BAB13B02-02);北京市教育委员会面上资助项目(KM201410853004)

摘　　要：为获得综采工作面压架事故监测预警指标和预警准则,在分析国内顶板监测系统应用现状的基础上,通过事故案例分析、矿压理论研究和现场实测数据分析,研究综采工作面顶板灾害致灾因素,提出了采场顶板灾害的6个预警指标,即初撑力合格率、安全阀开启率、支架不保压率、不平衡率、顶板周期来压步距、应力和地质异常区域,研究得到了预警指标实时、自动分析算法,建立了综采工作面顶板灾害监测预警平台。该平台在华能集团扎赉诺尔煤业有限责任公司铁北煤矿右三片综放工作面成功应用,通过24 h不间断监测和预警,及时采取有效措施,支架工况显著改善,推进速度加快,年产量由原来的不足250万t提高至350万t。在四川攀枝花煤业(集团)有限责任公司花山煤矿大采高大倾角工作面的成功应用,初撑力水平显著提高,有效解决了支架的防倒防滑问题。同时在皖北煤电集团有限责任公司的成功应用,显著提高了顶板管理水平,避免了多起顶板灾害的发生。In order to have the early warning index and early warning criterion of the powered support jammed accident monitoring and measuring in the fully-mechanized coal mining face,based on the domestic monitoring and measuring status,with the analysis on the accident cases,the study on the mine strata pressure theory and the analysis on the site measured data,the paper studied the factors to cause the roof disaster of the fully-mechanized coal mining face and provided six early warning indexes of the roof disaster occurred in the coal mining face,including the initial setting pressure passed rate,safety valve opening rate,no pressure keeping rate,unbalanced rate,roof weighting step distance and roof stress as well as the geological abnormal region. A real-time and automatic analysis algorithm of the early warning index was obtained from the study and a monitoring and early waning platform of the roof disaster was established for the fully-mechanized coal mining face. The platform was successfully applied to the Yousanpian fully-mechanized coal mining face in Tiebei Mine,Zhalainuoer Coal Industry Company Limited China Huaneng Group. With 24 h continuous monitoring and early warning and the on time effective measures conducted,the performances of the powered supports were improved obviously. The advancing rate of the coal mining face was speeded up and the annual coal production of the coal miming face was increased from less 2. 50 million t to 3. 50 million t. The platform was successfully applied to a high cutting and high inclined coal mining face in Huashan Mine of Sichuan Panzhihua Coal Industry Group Company Limited. The initial setting load level was obviously improved and the falling down and sliding prevention problems of the powered support was effectively solved. Meanwhile,the successful application of the platform to Wanbei Coal and Electric Power Group Corporation Limited obviously improved the roof control level and avoided several roof accidents occurred.

关 键 词：顶板灾害 预警平台 预警指标 矿压显现 

分 类 号：TD327.2[矿业工程—矿井建设] TD76