激励法超前探测技术电场约束效率研究  

Study on electrical field restriction efficiency of excitation method advance detection technology

作　　者：张伟杰[1] 张玉洁[1] 张有东 吴淼[2] 

机构地区：[1]华北科技学院机电工程学院,北京101601 [2]中国矿业大学(北京)机电与信息工程学院,北京100083

出　　处：《煤炭科学技术》2015年第6期102-106,共5页Coal Science and Technology

基　　金：国家高技术研究发展计划(863计划)重大基金资助项目(2012AA06A405);中央高校基本科研业务费资金资助项目(3142013063);华北科技学院教研基金资助项目(HKJY201409)

摘　　要：为了研究激励法超前探测仪器工作效率最佳时约束电极的位置参数b和电流强度参数k的取值范围,分析了激励法超前探测技术的基本原理,将掘进工作面前方煤(岩)看作线性时不变系统,建立了掘进工作面电场的数学模型,得出了掘进前方某位置的标量电位函数,提出了电场约束效率ηei的概念。借助Matlab软件,通过对比参数b和k分别取不同值时,约束效率ηei及其增量Δηe的变化规律,分析电极位置参数b和电流强度参数k对探测范围的影响,得出b和k的最佳取值是b=3 m,k=2.0~2.5,此时超前探测仪器的工作效率最高。In order to study the parameter of the restriction electrode location when the working efficiency of the advance detection instrument applied in the excitation method was in the best time and the value selection ranging of the current strength parameter,the paper analyzed the basic principle of the excitation method advance detection technology. The coal( rock) in the front of the mine gateway driving face as an unchanged system in linear was applied to establish a mathematic model of the driving face electric field. The scalar electric potential functions of a location in the front of the driving face were listed and the conception on the restriction efficiency of the electric filed.Due to the Matlab Software application,with the comparison and individual collection of the different value as well as the restriction efficiency ηeiand increased variation law Δηe,the paper analyzed the electrode location parameters and the current strength parameters and the influences to the detection scope. The obtained valueb and the optimized valuek would be 3 m and 2. 0 ~ 2. 5 respectively. At this moment,the working efficiency of the advance detector would be the highest.

关 键 词：超前探测 激励法 标量电位函数 约束效率 

分 类 号：TD263[矿业工程—矿井建设]