在地下结果的

The loading and unloading response ratio of groundwater level to earth tide in the North China is calculated by this method with observation data, and the variation of response ratio before Zhangbei earthquake( M \-s6.2) in 1998 is analysed.The anomalies of loading and unloading response ratio of m...

以此方法计算了我国大华北地区部分井水位的固体潮加卸载响应比，分析了张北1998 年6.2 级地震前地下水位固体潮加卸载响应比的变化，结果显示大多数井水位固体潮加卸载响应比在张北地震前3 到9 个月出现异常增大。

Through detailed analyzing some influencing factiors of sand liquefaction, seven parameters were selected as assessment indexes. They are earthquake magnitude, peak ground surface acceleration, standard penetration value, specific penetration resistance, relative compaction, average particle diameter, and water table. The extension assessment model has been established that was applied to assessment of sand liquefaction potential. The model had been trained by the historical data and has been assessed in virtue of sand liquefaction from the historical data by simulating, and got a excellent result. After introduction of the support vector machine theory, this paper established the assessment model of sand liquefaction based on the support vector machine, and assessed in sand liquefaction from virtue data of some fields in home and overseas with the tool Libsvm, which was programmed based on the support vector machine theory. And got a good coherency between the assessement results and the actual liquefaction.

在详细分析影响砂土液化因素的基础上，选取了震级M、地面最大加速度g_、标准贯入击数N_(63.5)、比贯入阻力P_s、相对密实度D_r、平均粒径D_(50)、地下水位d_w等7个参数作为评价指标，建立了砂土液化势的可拓评价模型，并对历史数据进行仿真评价，取得了较好的应用效果；在对支持向量机的理论进行介绍后，本文建立了基于支持向量机的砂土液化势评价模型，并利用在基于支持向量机理论的Libsvm软件，对若干国内外场地的现场实测数据进行了评价，评价结果与现场表现基本上一致。

The main local industries are anthracite, but in the 1960s, many companies in this area were suspended. In 1962, due to the burning of garbage each week, an opencast coal mine was accidentally ignited.

当地的主要产业是无烟煤，但在20世纪60年代这方面的很多公司都停业了。1962年，由于每周的焚烧垃圾，使得一个露天煤矿被意外点燃，结果地下煤矿发生了大火。

Based on the principle of variation of earth pressures on the culverts under different conditions, including topography, span of culvert, density of fill and the type of structure, and the property of arching action above the culvert, a nonlinear earth pressure theory for culverts beneath high fill is presented, the theory suggests the earth pressure on the culverts beneath high fill can be calculated with the formula σ=ξγH〓 as the fill up to higher height.

把这种方法与其它地下洞室的土压力计算理论进行的对比分析结果表明，非线性土压力理论考虑了填土达到一定高度时在涵洞上方产生的拱效应以及土拱的不稳定性特点，其计算的土压力明显低于不考虑拱效应的低填方涵洞土压力计算值，但高于具有稳定土拱效应的地下洞室土压力理论得到的土压力。

In the 50 cm plough layer per m2 area, the total rootstalk weight of L.

结果表明：赖草株高45~120 cm，单生或丛生，具下伸土壤30~50 cm耕层间有横走根群，每平方米内，深50 cm耕层内赖草根茎总重量为1129.3 g，根茎总长度为2783.3 cm，根茎上的新芽589.7个，使土壤严重缺水，肥力下降；土壤水分在13.4%左右时，对出苗影响不大，对生长发育有很大的影响；气温在-6~6℃，根茎萌发出土，高峰期为4月上旬，平均单株结种量为468.4粒；每平方米内有赖草120~160株时，大黄产量损失达15.8%~17.8%；田间每平方米内有赖草1株时，采用人工或机械深耕捡出地下根茎，减轻翌年危害来源。

To all project practicality, the introduction is given to the operational characteristics, the methods for calculation and the researching actuality of the tail tunnels with sloping ceiling underground hydropower stations the Three Gorges. This paper has discussed in detail the characteristic method being the same with the compressive flow and the Priessmann solution being the same with the free-surface-pressure flow. And how to deal with boundary conditions has been expatiated. Also hydraulic transient process of tremendous load fluctuation in the tail tunnels with sloping ceiling has been numerical simulated and the Fortran program for numerical simulation has been given. The paper gain the maximal press for tail end of the shell, the maximal rising rate of rotational speed of generating set, the maximal vacuum degree for inlet of the tail tunnels and so on under 11 kinds conditions of tremendous load fluctuation. These conditions include the design conditions, the check conditions and the superposition conditions. Finally, the computing results have been analyzed and summarized. The end chapter is the general comment of the whole-length content and the describing of the intending view of researching.

本文以三峡右岸地下电站尾水洞设计为背景，从工程实际出发，阐述了变顶高尾水洞的工作特性、使用范围及其研究现状；详细论述了适用有压流的特征线法、适用明满交替流的普里斯曼解法等数学模型；边界条件的给定和明满交替流的计算方法；用Fonran语言编制了数值计算程序，对三峡右岸地下电站变顶高尾水洞的大波动工况进行了数值模拟，分别得出了在设计工况、校核工况和叠加工况下蜗壳末端最大压力上升值、机组最大转速上升值和尾水管进口最大真空度等重要参数；对数值计算结果进行了详细分析并得出了有价值的结论；最后展望了今后水电站变顶高尾水洞的研究方向。

It is important to make shockproof in engineering of buildings and establishments. The phenomena of spallation brought by UNE have been analyzed and the thickness and range of spall system has been studied.

在国内最早和较系统地开展了与地下核爆炸有关的层裂分析计算工作，并对核爆炸现场的层裂实测波形与计算结果开展了分析比对研究工作，其类似结果在国内外尚无公开报导。

As the caves and cracks developed in the carbonate rocks were usually joined together with the leterite foundation soil and the water acting in the caves and cracks erode the leterite foundation soil,so that the earth cave s be formed in the soil and will lead a building to destroy.

研究结果表明，在抽水降深12m的条件下，虽然教学大楼地基中的岩溶地下水位与基岩面高程比较相近，有可能导致土洞形成，但由于该建筑场地土层厚度较大，胶结较为紧密，粗颗粒含量较多，可在一定程度上抑制土洞向地表塌陷发展的进程。

3D numerical simulation of typical sidewall and crown block s is carried out for underground powerhouse of the Three Gorges Project.

运用FLAC3D软件对三峡地下电站主厂房的典型边墙和顶拱块体分别进行三维数值模拟分析，对比分析其模拟结果表明：(1)边墙块体在水平垂直厂房轴线和铅直方向上应力均表现出卸荷特征，特别是x方向。

The results show that the air temperatures in most spots of the garage are higher than 0℃, the air temperature near the entrance or the exit is lower than 0℃, but the surface temperatures of fire hydrant and water pipe for fire fighting are still higher than 0℃.

结果表明，该地下车库绝大部分区域的空气温度高于0℃，口部附近空气温度低于0℃，但消火栓及消防水管的表面温度仍高于0℃；并对地下车库不设供暖系统的节能效益进行了分析，认为在消防系统采取适当防冻措施的前提下，寒冷地区地下车库不设供暖系统是可行的，而且可以产生节能减排效益和经济效益。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。