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采空区渗流
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  “采空区渗流”译为未确定词的双语例句
     NUMERICAL ANALYSIS OF SEEPAGE FIELD OF J-TYPED VENTILATION In GOB AREA UNDER MECHANIZED TOP COAL CAVING
     综放开采J型通风采空区渗流场数值分析
短句来源
     Second, by using the knowledge of hydrodynamics and thermodynamics etc, equation of gas distribution of loose coal with ventilation leakage in the gob, equation of osmosis coefficient of different depth, influence function of oxygen consumption with depth, equation of airflow on both sides of the working face, and mathematical model of diffusion of air leakage in the gob and forecast model of fully mechanized gob can be set up.
     其次,根据数值传热学、流体力学和热力学等学科相关知识,建立了综放采空区漏风松散煤体空隙分布方程、采空区不同深度的渗透系数方程和采空区深度对耗氧速度的影响函数方程,并结合采空区渗流及扩散数学模型,建立了综放采空区抽放条件下自然发火预测数学模型;
短句来源
     The results of numerical stimulation show that although the goaf and influenced area are in different hydrogeological unit,the groundwater seepage channels are influenced by mining, which provide a favorable hydrogeological condition for the water runoff and accumulation to deep goaf,and make the stope that originally do not possess leakage conditions into a reservoir that can take up prodigious seepage.
     模拟结果表明,即使采空区和受影响区处于不同的水文地质单元,也会因地下采动影响形成畅通的渗流通道而改变地下水的径流方向和方式,为水的流失和向深部采空区渗流汇集创造便利的水文地质条件,使原来不具备渗水条件的采场成为可以接纳很大渗流量的地下水库。
短句来源
     A numeric algorithm was taken to solve coupled steady model of air flow,diffusion and chemical reaction in multi-layer neighbored coal seams and rocks,and oxygen concentration and flow velocity magnitude in different position was obtained.
     通过数值方法求解复合煤层采空区渗流、扩散和化学反应耦合的三维稳态数学模型,得到常温下采空区氧浓度及渗流速度场的分布.
短句来源
     Through numeric simulation,distribution of oxygen concentration and velocity of air flow in mined out area are determined.
     笔者通过对采空区渗流场的数值模拟,得到采空区渗流速度及O2浓度的分布。
短句来源
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  相似匹配句对
     THE NON-LINEAR INFILTRATION FLOW ON TWO-DIMENSIONAL GOAF AND ITS SOLUTION
     二维采空区非线性渗流问题和解法
短句来源
     A Study on 3D Seepage Flow Model Simulated A bandoned Workings Grouting Harnessing Proc ess
     三维渗流模型模拟采空区注浆治理过程的研究
短句来源
     Managemen of Spontaneous Combustion Fire in Goaf
     采空区火灾的治理
短句来源
     The Seepage Calculation of Earth Dams
     土坝渗流计算
短句来源
     Suspension Percolation Mathematical Model
     悬浮液渗流数学模型
短句来源
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According to the design of goaf gas discharge in Sihe mine, the authors established the finite element numerical model for infiltration flow and diffusion in heterogeneous goaf. It can visually depict the gas emission course in goaf, the gas distribution rule and the hydrodynamics principle for gas accumulation in return corner of a goaf. The simulation result shows that by using return connected lane for air leakage diversion and gas discharge in proper order, we can reduce gas concentration in return corner...

According to the design of goaf gas discharge in Sihe mine, the authors established the finite element numerical model for infiltration flow and diffusion in heterogeneous goaf. It can visually depict the gas emission course in goaf, the gas distribution rule and the hydrodynamics principle for gas accumulation in return corner of a goaf. The simulation result shows that by using return connected lane for air leakage diversion and gas discharge in proper order, we can reduce gas concentration in return corner greatly, at the same time, if the method is used properly, we may also fully restrain the gas in the goaf from swarming into working faces and reduce distributed air quantity of drainage roadways. To the gas discharge in goaf of high gas mines, the authors bring forward a design scheme:"discharging and drawing out gas while excavating coal", which can control goaf gas synthetically, and the optimum position range of gas drainage, drainage flux, and the lowest critical limit of the indicating air quantity are also given.

以寺河矿采空区瓦斯抽放设计为例,建立了非均质采空区渗流-扩散的有限元数值模型,直观地描绘了采空区瓦斯涌出过程、瓦斯分布规律及其在采空区回风隅角瓦斯积聚的流体力学原理。模拟结果表明,在工作面后方利用回风联络巷依次进行漏风导流和瓦斯抽放,可大幅度降低采空区回风隅角瓦斯浓度;同时漏风导流可以充分抑制采空区瓦斯涌入工作面,并能够降低抽放巷道的配风量。针对高瓦斯矿井采空区瓦斯排放问题,提出了"边采边抽边排"的综合治理采空区瓦斯的设计方案,给出了瓦斯抽放最佳位置范围、抽放流量和导流风量最低临界限。

Water-break phenomena occur in some wells in Bajiazi Village,Fuxin Coalfield because of coal mining. The conditions of this case are employed. The hydrogeology qualitative analysis on the groundwater loss mechanism induced by underground mining is carried out. Then numerical simulation is performed with the rock failure process analysis (RFPA2D) code. The change and redistribution of the stress field of the rocks around the stope are studied,and the process from initiation,propagation,and coalescence to...

Water-break phenomena occur in some wells in Bajiazi Village,Fuxin Coalfield because of coal mining. The conditions of this case are employed. The hydrogeology qualitative analysis on the groundwater loss mechanism induced by underground mining is carried out. Then numerical simulation is performed with the rock failure process analysis (RFPA2D) code. The change and redistribution of the stress field of the rocks around the stope are studied,and the process from initiation,propagation,and coalescence to rupture of rock crannies around the stope is reproduced. The process shows the transformation and adjustability of the groundwater seepage action and the course of the groundwater leakage to the goaf through the crack. The results of numerical stimulation are consistent with the result of the hydrogeology qualitative analysis,which proves that REPA2D is one of the credible numerical quantitative analysis method to forecast the cranny′s initiation,propagation,and other hazards(such as the groundwater runoff in this paper). The results of numerical stimulation show that although the goaf and influenced area are in different hydrogeological unit,the groundwater seepage channels are influenced by mining, which provide a favorable hydrogeological condition for the water runoff and accumulation to deep goaf,and make the stope that originally do not possess leakage conditions into a reservoir that can take up prodigious seepage.

以煤矿相继地下采动造成阜新矿区八家子自然村民井断水现象为例,在对地下开采条件下水资源流失机理进行水文地质学定性分析的基础上,运用二维岩石破裂渐进过程分析系统,数值模拟了采场覆岩应力场的变化与重新分布规律,数值模拟结果再现了采动区覆岩裂隙萌生、扩展和贯通的过程;这个过程也是地下水渗流场变化与调整、地下水沿新生裂隙通道向地下开采负空间渗流的过程。二维岩石破裂渐进过程分析系统数值模拟结果与水文地质学定性分析结果吻合,证明该系统是一种能预测并预算采动裂隙生成、扩展及其相关危害(如地下水流失等)的可靠的数值定量分析方法。模拟结果表明,即使采空区和受影响区处于不同的水文地质单元,也会因地下采动影响形成畅通的渗流通道而改变地下水的径流方向和方式,为水的流失和向深部采空区渗流汇集创造便利的水文地质条件,使原来不具备渗水条件的采场成为可以接纳很大渗流量的地下水库。

After national coal,local coal and individual coal exploitation actions one after the other,the water table at Fuxin Bajiazi village fell to 43m under surface, inducing well water broken off.Through numerical simulation analyses on these exploitation actions,using the RFPA~(2D) analysis system,taking underground water breaking off phenomena as an example,this article expounds the relation of rock stress changes with the development of excavating crannies.The result shows that exploitation crannies development...

After national coal,local coal and individual coal exploitation actions one after the other,the water table at Fuxin Bajiazi village fell to 43m under surface, inducing well water broken off.Through numerical simulation analyses on these exploitation actions,using the RFPA~(2D) analysis system,taking underground water breaking off phenomena as an example,this article expounds the relation of rock stress changes with the development of excavating crannies.The result shows that exploitation crannies development (creating,expanding,and transfixion) and their extending scope are closely correlated with the exploitation mode,exploitation position and underground rock stress field unceasing-changing under underground exploitation conditions.Mining area expanding and mining area position's raising leaded to exploitation crannies expanding and transfixion,united different hydrologic and gelolgic cells,created advantageous conditions for underground water running off and underground water table going down fleetly,caused water resource running off and influx to deep mining area and its circumjacent area.Because in different mining phases the degree of water resource's running off and the range of underground water going down are different,we should take corresponding methods to control it.For example,before the mining and in initial stage of mining,we should design exploitation working-face and coal column reasonably.In exploitation phase,when mining area becomes more and more large,we should adopt real-time control methods to jam the seepage crannies. Finally,we should take comprehensive methods to control the hazard.

在国矿、地方煤矿和个体煤矿相继开采条件下,阜新矿区八家子自然村附近地下水水位下降到地表以下43m,导致民井断水。文章运用RFPA2D分析系统,以断水现象为例,通过对此系列采矿活动数值模拟分析,阐述了覆岩应力变化与采动裂隙发育的关系。结果表明,采动裂隙的发育(生成、扩张和贯通)及其延伸范围,与开采方式、开采层位和地下开采条件下地下岩体应力场不断变化密切相关。随着采区不断扩大、位置不断抬高导致采动裂隙扩张和贯通,使不同的水文地质单元联合,为浅部地下水迅速流失和地下水水位快速下降创造了有利条件,造成采动区及其附近区域水资源持续流失、向深部采空区渗流汇集。由于在不同的采矿阶段,水资源流失的程度和地下水水位下降的幅度是不同的,应该采取相应的控制方法,例如,在采掘前和初期应该合理设计采掘工作面、合理预留保护煤柱;在采掘中达到较大采空区时应采取实时控制措施、堵塞渗流裂隙;最后进行综合治理。

 
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