现代矿业
現代礦業
현대광업
MODERN MINING
2015年
5期
121-123
,共3页
采空区%尖点突变%分支曲线%突水机理
採空區%尖點突變%分支麯線%突水機理
채공구%첨점돌변%분지곡선%돌수궤리
Mining goaf%Cusp catastrophic%Bifurcation curve%Water-inrush mechanism
为建立采空区突水尖点突变模型，选取突水阻抗因子（MR）和导水裂隙发展因子（Nh1）作为评价突水与否的控制变量，采空区底板岩层水压应力比 IP 为状态变量，以尖点突变理论为基础，建立了采空区突水预测模型。通过坐标转换和边界条件，求解模型中的参数取值。根据大量突水实例确定了分支曲线方程的表达式，并求得水压应力比 IP。当 IP ＞1时，空区发生突水，反之，便不会突水。实例分析表明：该方法预测准确率高，与现场情况基本吻合。
為建立採空區突水尖點突變模型，選取突水阻抗因子（MR）和導水裂隙髮展因子（Nh1）作為評價突水與否的控製變量，採空區底闆巖層水壓應力比 IP 為狀態變量，以尖點突變理論為基礎，建立瞭採空區突水預測模型。通過坐標轉換和邊界條件，求解模型中的參數取值。根據大量突水實例確定瞭分支麯線方程的錶達式，併求得水壓應力比 IP。噹 IP ＞1時，空區髮生突水，反之，便不會突水。實例分析錶明：該方法預測準確率高，與現場情況基本吻閤。
위건립채공구돌수첨점돌변모형，선취돌수조항인자（MR）화도수렬극발전인자（Nh1）작위평개돌수여부적공제변량，채공구저판암층수압응력비 IP 위상태변량，이첨점돌변이론위기출，건립료채공구돌수예측모형。통과좌표전환화변계조건，구해모형중적삼수취치。근거대량돌수실례학정료분지곡선방정적표체식，병구득수압응력비 IP。당 IP ＞1시，공구발생돌수，반지，편불회돌수。실례분석표명：해방법예측준학솔고，여현장정황기본문합。
In order to establish the water cusp catastrophic model in mining goaf,the impedance factor(MR)and water inrush of water flowing fractured growth factor (Nh1 )are selected as the control var-iable to evaluate the water inrush or not,the goaf floor strata pressure stress IP is selected as status varia-ble.Based on the cusp catastrophe theory,the mining goaf water-inrush prediction model is established. The parameters of the prediction model is understood based on the coordinate transformation boundary conditions.The bifurcation curve is determined based on a lot of water-inrush instance.The stress ratio IP can be obtained by solving the bifurcation curve,when the stress ratio IP is greater than 1,the water-in-rush of the mining goaf will happen,when the stress ratio IP is less than 1,the water-inrush of the mining goaf will not happen.The example analysis results show that,the prediction results of the water-inrush is identical to the field situation.
