中国煤炭
中國煤炭
중국매탄
CHINA COAL
2013年
11期
55-60
,共6页
震动波波速%采掘区域%冲击矿压%危险性评价%矿山CT技术%正异常
震動波波速%採掘區域%遲擊礦壓%危險性評價%礦山CT技術%正異常
진동파파속%채굴구역%충격광압%위험성평개%광산CT기술%정이상
tremor wave velocity%mining area%rock burst%risk assessment%mine CT tech-nology%positive anomaly
震动波波速与应力的正相关关系说明利用矿山CT技术反演震动波波速可大范围研究采掘区域的应力分布特征，从而划分冲击危险区域。在此背景下，综合采用理论研究、数值计算和现场实测数据分析相结合的研究方法，设计了己15＃-24080工作面矿山CT技术现场实施方案，建立了沿直接顶传播的滑行波和沿煤层传播至接收点的直达波波速的二维求解模型，求解了己15＃-24080工作面区域的煤岩震动波波速分布图，最后基于冲击矿压机理提出的正异常危险性评价指标，分级确定了5个冲击危险区域及其范围。现场动力显现表明该技术能够准确探测冲击危险区域。
震動波波速與應力的正相關關繫說明利用礦山CT技術反縯震動波波速可大範圍研究採掘區域的應力分佈特徵，從而劃分遲擊危險區域。在此揹景下，綜閤採用理論研究、數值計算和現場實測數據分析相結閤的研究方法，設計瞭己15＃-24080工作麵礦山CT技術現場實施方案，建立瞭沿直接頂傳播的滑行波和沿煤層傳播至接收點的直達波波速的二維求解模型，求解瞭己15＃-24080工作麵區域的煤巖震動波波速分佈圖，最後基于遲擊礦壓機理提齣的正異常危險性評價指標，分級確定瞭5箇遲擊危險區域及其範圍。現場動力顯現錶明該技術能夠準確探測遲擊危險區域。
진동파파속여응력적정상관관계설명이용광산CT기술반연진동파파속가대범위연구채굴구역적응력분포특정，종이화분충격위험구역。재차배경하，종합채용이론연구、수치계산화현장실측수거분석상결합적연구방법，설계료기15＃-24080공작면광산CT기술현장실시방안，건립료연직접정전파적활행파화연매층전파지접수점적직체파파속적이유구해모형，구해료기15＃-24080공작면구역적매암진동파파속분포도，최후기우충격광압궤리제출적정이상위험성평개지표，분급학정료5개충격위험구역급기범위。현장동력현현표명해기술능구준학탐측충격위험구역。
The positive relation between tremor wave velocity and stress reveals the fact that the mine CT technology can be used to inversely analyze the tremor wave velocity,so as to study the stress distribution in mining area and determine the areas with burst risk on a large scale. Therefore,theoretical research,numerical calculation and field measurement methods are syn-thetically adopted to design the field implementation scheme of mine CT in F15-24080 working face,and construct the 2-D solution model for velocities of sliding wave transmitting along the immediate roof and direct wave propagating to receiving point along the coal seam to calculate dis-tribution result of wave velocity in coal rock in the face,and then five areas with burst risk and the scope are graded and determined based on the positive risk assessment indexes anomaly pro-posed through the mechanism of rock burst.The field dynamic events show that the mine CT technology could accurately detect the areas with burst risk.
