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The procedures of determining confined aquifer parameters by BP neural network were introduced...

为说明BP神经网络求含水层参数的原理,本文以文献数据给出了基于非稳定流抽水试验的BP神经网络求承压含水层参数的过程。

On the basis of collecting systematically the materials of the physical prospecting, the geological drilling and the water pumping experiment of the mine, geological structure ,aqui- fers and other hydrogeological condition of the minefield have been detailedly researched. Finally, the conclusions that geological structure of the mine is ***, aquifers belong to the aquosity small rock layer, hydrogeological condition is ***, were drawn.

在系统收集该井田矿井物探、钻探和抽水试验资料的基础上,对井田内地质构造、各含水层等水文地质条件进行了具体研究,得出结论为矿区地质构造简单;含水层属于含水性弱或微弱的岩层;水文地质类型为中等。

The location and the depth of watering layer can be exactly confirmed by TEM combining with electric difference of the known artesian well.

以导电球体为模型来计算地下含水层异常的可分辨时间窗口,确定该区地下含水层异常出现最大值的探测条件。

In this case, the geoacoustic waves satisfying the constructive interference prefer entially propagate along the confined aquifer, and the most energy of waves is trapped within the confined aquifer waveguide.

此时,满足相长干涉的地声波将择优沿着承压含水层传播,声波的大部分能量被捕获在承压含水层波导内。

Based on the theories of porous medium seepage and elasticity, the partial differential equations on the response of the well water bearing system to the Earth tide signal are derived under the condition of changing well radius.

根据多孔介质渗流理论和弹性理论,在井孔变径条件下,得出水井含水层系统对潮汐信号响应的偏微分方程,认为井径变化相当于改变了井水柱的有效高度,从而影响了水井含水层系统的固有振动周期。

Corresponding measures are proposed to protect well field and water environment by setting well field gradational protection system, and expl...

提出了建立水源地分级保护体系、以拦蓄排泄带方式开采地下水等保护水环境的应对措施;还介绍了防治或减轻含水层结构破坏的"开采技术措施";在一定措施控制下的"含水层再造技术";在烧变岩带采用"疏排型水源地开采技术";"排水-供水-生态环保三位一体结合技术"以及针对矿区周围沙地较多特点的"矿井水沙地净化处理技术"。

Magnetic Resonance Sounding is the only geophysical new method of directly detecting underground water at present. In this paper the main gains of taking part in the 2nd MRS international workshop are introduced, development and progress of hydroscope and applications of MRS method are considered. On the basis of the MRS successful application in the detection of underground water, using MRS method new progress has been made in slide monitoring of Three Gorges and archeology of the first Qin dynasty imperator mausoleum for the first time.

第二届核磁共振测深国际学术研讨会概况《第二届MRS在地下水勘查中的应用》国际学术研讨会2003年11月19日~21日在法国奥尔良召开。1.1 第二届MRS 研讨会的主题研讨会的主题是:对地表下含水层MRS响应模拟;数据处理和反演;野外工作对策;数据采集和质量控制方面的经验;MRS和其它地球物理资料的综合应用和解释;MRS资料的校正和确认问题;含水层几何形状和水动力学性质特征;开发MRS 方法的前景。

Based on the science idea of coupling, this paper studied systematically the theory, mathematical model and technology of rock mass hydraulics in coal mining above aquifer, the numerical simulation method, the resemble simulation theory and method. A series of reciprocity law on the stress and displacement of upper and down floor of coal layer, coal pole, fault and the law of water pressure variety was analyzed thoroughly and particularly. Based on the relation of hydraulics character of multi-aquifer, the inspecting and predicting theory model, method and system of water outburst was founded. By used in the colliery, The results were ratified by colliery missionary. In situ test for the hydraulics character of the floor on hydrology observation hole was done.

本文基于固流耦合作用的学术思想,通过理论研究、相似模拟实验、数值分析及现场实际应用,系统研究了带压开采的块裂介质岩体水力学数学模型,数值模拟方法,相似模拟理论与方法,深入细致地分析了带压开采中项底板、煤柱、断层的应力位移分布、含水层水位变化等一系列相互作用规律,并建立了基于多含水层水力联系的底板突水监测预报理论模型及其监测预报方法与系统,并将研究成果应用于现场实际,得到了现场工作人员的一致认可。

Analysis is made on the influences of the main constructions in the mine on the roof wall rock and the water containing layer, the ubiety between the roof and the interlayer or relative interlayer, the influence of the water containing layer and exploration drilling on jamb mining. The safety mining depth as well as the height of collapsed belt and the cranny guiding water are calculated. Furthermore, the ANSYS software is adopted to simulate the stability of the cover terrane and the maximum permit exposure area.

分析了矿区内主要构造对顶板围岩及含水层影响、顶板与隔水层和相对隔水层位置关系、含水层及勘探钻孔对矿柱回收的影响;计算了冒落带和导水裂隙高度及安全开采深度;用ANSYS有限元软件模拟了空区上覆岩层稳定性及最大允许暴露面积。

Jianghan plain, located in the middle-south of Hubei province. Its ground water resources degree of development and utilization are high. The primary exploitation layers are the upside pore confined aquifer and the underpart cranny and pore confined aquifer. With the rapidly development of urbanization and economic,the water consumption is increasing.That have coused the local ground water table decent.In someplace,the excessive exploitation have induced the groundwater table fall and collapse.

江汉平原位于湖北省中南部,其地下水资源开发利用程度较高,主要开采的为上部[Q_(2+3)]孔隙承压含水层和下部[Q_1+N]裂隙孔隙承压含水层中的水,随着区内城市化建设和经济的迅速发展,用水量增加,区域地下水位已有一定幅度的下降,局部地区因过量开采已形成地下水降落漏斗和地面塌陷等现象。

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推荐网络例句

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面,更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?