The humid cellars are relatively simple holes in the ground, marginally protected from critters with hardware cloth, pressure-treated lumber, and snap traps.

濕窖就是相對(duì)簡(jiǎn)單點(diǎn)的在地面下的洞孔瑟瑟欧，在邊上用金屬布隔開(kāi)，防止生物国产深夜操屄视频，加壓處理的木材观看青草视频在线，還有彈夾的破壞。

It indicates that emphasis should be put on the following subjects in the future: the determination of field infiltration coefficient and roughness coefficient;the optimal combination of field standard and irrigation technical index ,and the rational ground levelness degree and mode.

對(duì)近10多年來(lái)地面灌溉水流運(yùn)動(dòng)數(shù)值模擬方面的國(guó)內(nèi)外研究進(jìn)展進(jìn)行了歸類整理国产专区网站，并就目前研究中存在的不足和未來(lái)急待深入研究的問(wèn)題進(jìn)行了探討91交换，認(rèn)為在今后的研究中應(yīng)把地面灌溉入滲參數(shù)和糙率的確定問(wèn)題，不同地區(qū)和作物條件下合理的田塊尺寸與灌水要素的優(yōu)化組合研究及經(jīng)濟(jì)合理的田間土地平整度及平地模式的研究国产黄色视频A级片，長(zhǎng)畦分段灌黄片二级在线观看、階式水平畦灌、覆膜灌溉條件下的水流運(yùn)動(dòng)和合理灌水技術(shù)指標(biāo)的研究国产黄片av在线，渾水灌溉和土壤氣阻對(duì)地面灌溉水流運(yùn)動(dòng)的影響機(jī)理研究等作為重點(diǎn)內(nèi)容口爆女神。

The war was a complete subversion of the war in the past to attack ground-based understanding of the concept; the Federal Republic of Yugoslavia in the war, the US-led NATO forces did not put in ground troops, the use of the Federal Republic of Yugoslavia Precision guided weapons of indiscriminate bombing, eventually forcing the Federal Republic of Yugoslavia to yield more ground attack proved that the traditional mode of war will soon be empty by the Navy-led joint operations by replacement of the three services, ground troops in modern warfare status, others Gradually given way to decline in the Air Force and Navy.

這次戰(zhàn)爭(zhēng)徹底顛覆了人們的對(duì)以往戰(zhàn)爭(zhēng)的以地面進(jìn)攻為主的認(rèn)識(shí)觀念；在對(duì)南聯(lián)盟的戰(zhàn)爭(zhēng)中麻豆精品在线免费，以美國(guó)為首的北約部隊(duì)在线观看十八以上禁止观看，在未投入地面部隊(duì)的情況下，對(duì)南聯(lián)盟采用高精度的制導(dǎo)武器狂轟濫炸中文字幕欧美日韩人妻啪啪，最終也迫使南聯(lián)盟屈服国产黄片在线免费，更證明了地面進(jìn)攻的傳統(tǒng)戰(zhàn)爭(zhēng)模式即將被以空海軍為主導(dǎo)的三軍聯(lián)合作戰(zhàn)所替代，地面部隊(duì)在現(xiàn)代戰(zhàn)爭(zhēng)中的地位白白色视频在线发布，己逐步下降讓位于汗鶤V激情无码久久小说？哲姟?/p>

Most monocotyledons are hypogeal.

大部分單子葉植物都是地面下的欧美激情亚洲色图。

Huge quantities of ground water deposited in the limestone flow from south to north and are blocked by the magmatic rocks.

由于在濟(jì)南的地面下在线AA亚洲视频，存在著許多地殼裂痕国产黄色av大片，大量的地下水在壓力的作用下流出地面。

The results show that at sea level, coolant flow rate affects the plug pressure, heat flux and temperature; at design operating condition, coolant flow rate has no effect on pressure and heat flux on the plug wall. With the same coolant flow rate, plug temperature at sea level is higher than that at design operating condition; under the same operating condition, ramp temperature is higher than the plug base temperature.

計(jì)算結(jié)果表明：地面工況下人人爱人人上人人操台湾，冷卻劑流量的改變對(duì)塞錐和塞錐底部壁面的壓強(qiáng)日韩午夜一区二区福利影院、熱流密度和溫度的影響較大，高空環(huán)境下人人人人看人人人人操，冷卻劑流量的改變對(duì)塞錐和塞錐底部壁面的壓強(qiáng)国产成人高清亚洲影院在线观看、熱流密度的影響較小强制高潮18XXXX按摩免费视频；在冷卻劑流量相同的情況下欧美最婬乱婬暴婬性视频，塞錐和塞錐底部在地面工況下的壁面溫度要遠(yuǎn)高于在高空環(huán)境下的溫度；在相同工況和相同冷卻劑流量的情況下久久99久久99久久这里只有精品资源，塞錐壁面上的溫度要遠(yuǎn)高于塞錐底部壁面上的溫度日韩A片视频免费观看。

Based on the analysis of the factors caused land subsidence, the internal mechanism and development process of land subsidence caused by two mainly factors of dewatering and underground mining have been studyed in this thesis. The random medium model and methods have been established to calculate the land subsidence and deformation caused by dewatering or underground minging and both of them. The prediction problem of land subsidence and deformation caused by single factor and many factors has been solved.

本文在分析引起地面沉降原因的基礎(chǔ)上，針對(duì)引起地面沉降變形的主要因素——地下水疏降和固體礦物開(kāi)采亚洲国产另类久久久精品红牛，分析在线视频国产激情、研究了其引起地面沉降變形的內(nèi)在機(jī)理和發(fā)展過(guò)程，推導(dǎo)出地下水疏降和地下固體礦物開(kāi)采引起的地面沉降變形計(jì)算的隨機(jī)介質(zhì)模型欧美久久迷奸网站视频最新，給出了具體的計(jì)算方法和計(jì)算步驟国产日韩Av无码毛片尤物，并將固體礦物開(kāi)采和巖土體疏水等導(dǎo)致地表沉降視為相互獨(dú)立的事件av在线黄色网站，解決了固體礦物開(kāi)采和地下水疏降共同作用下的地面沉降變形的線性疊加計(jì)算問(wèn)題午夜国产三级。

For each strategy, a corresponding exploitation plan of groundwater was designed. Then each designed exploitation plan (except scheme 3) was put into the model for calculation and simulation. The analysis on the forecasting results every plan indicates that:(1) Shuting down the self-provided wells is the most direct and effective method, playing an important role in the land subsidence prevention.(2) The resumption of compressed soil by groundwater artificial recharge is limited. So the artificial recharge can\'t provide essential effect for the resumption of land subsidence, unless the artificial recharge is much more than the groundwater withdrawal.(3) The method of "adjusting the exploitation stratum of groundwater to the shallow" has an obvious effect on the land subsidence prevention.(4)"Sand wells" can increase the leakage recharge for confined aquifer, and thus can slow and prevent the development of the land subsidence.(5) For the groundwater exploitation in Xi\'an, emergency self-provided wells should be managed according to the well spacing of 1600m, 2000m and 1600m, respectively, in the river terrace area, alluvial-proluvial fan area and loess tableland area to exploit the first confined groundwater. Corresponding individual well yield can be set as 2500m~3/d, 1500 m~3/d and 200 m~3/d. Make emergency self-provided wells pump in the dry year and stop pumping groundwater to restore and conserve underground water sources in average years and wet years. In this way, groundwater withdrawal of 162000m~3/d can be obtained to provide for the supplement of water supply in Xi\'an. As a result, the water supply stress can be released in dry years. The groundwater depression formed in the exploiting year can resume in 3-4 years. At the same time, this exploitation manner will not lead to obvious land subsidence.

本文利用所建的模型預(yù)測(cè)了現(xiàn)狀開(kāi)采條件下未來(lái)20年的地下水位和地面沉降的變化，在此基礎(chǔ)上国产欧美精品一区AⅤ，提出了防治西安市地面沉降的五個(gè)地下水開(kāi)采方案国产乱伦视频网址，利用所建的地面沉降模型對(duì)各個(gè)設(shè)計(jì)方案其進(jìn)行了模擬和預(yù)報(bào)，對(duì)預(yù)測(cè)結(jié)果的分析表明：①封停自備井是防治地面沉降最為直接和最有效的對(duì)策白色白色在线视频，對(duì)防治地面沉降起著最為積極的作用五月婷网址；②采用人工回灌方法使被壓縮的土層得到的恢復(fù)是非常有限的，對(duì)地面沉降不能起到根治作用黄色片A片网站，只有回灌量明顯大于開(kāi)采量時(shí)才能有一定的效果在线播放免费人成试看；③&調(diào)整開(kāi)采層次，在淺層取水&對(duì)防治地面沉降的效果十分明顯20内精品久久久久精品；④布設(shè)&砂井&可以增加對(duì)承壓含水層的越流補(bǔ)給量欧美XXXX超碰精品99，從而可以有效地緩解和控制地面沉降的發(fā)生和發(fā)展；⑤對(duì)西安市的地下水開(kāi)采a一级毛片久久免费，可在河流階地區(qū)国产国语无码专区在线观看、沖洪積扇區(qū)和黃土塬區(qū)分別采用1600m、2000m国产三级AV大黄、1600m的井間距布置應(yīng)急自備井人人干自拍视频，分別采用2500m~3/d最新黄色网站在线观看、1500 m~3/d和200 m~3/d的單井開(kāi)采量，開(kāi)采第一承壓水一道本无码A√，在平水年或者豐水年不開(kāi)采九一国产精品网站，涵養(yǎng)地下水源，在枯水年啟動(dòng)這些應(yīng)急自備井開(kāi)采99久久一级做a爱全免费，在輸出分析范圍內(nèi)共可獲得162000 m~3/d(5913萬(wàn)m~3/a)開(kāi)采量亚洲国产黄色视频，可以有效地補(bǔ)充西安市的供水水源，緩解供水緊張局面亚洲欧美激情小说视频，開(kāi)采年開(kāi)采導(dǎo)致的下降的水位可在停采3～4年后得到基本恢復(fù)性交AAAAA片在线看，同時(shí)，這種開(kāi)采方式不會(huì)造成大的地面沉降量午夜亚洲视频。

If an earth connection is used it shall, where possible, consist of a buried metallic plate or tube in the ground external to the building.

如使用地面接駁欧美日韩福利视频一区，在可能情況下該地面接駁須包含一個(gè)埋藏在建筑物外地面下的金屬碟或管道。

Duration of inversion temperature near ground surface is longer, air temperature is lower, air humidity is higher and water surface evaporation of 20cm standard pan on the top of canopy is generally lower under sprinkler irrigation condition than those under surface irrigation condition.

噴灌跟地面灌溉相比欧美视频在线观看熟，噴灌條件下近地面出現(xiàn)的逆溫時(shí)間長(zhǎng)欧美久久黄色网站，空氣溫度低，離地面1～4米高度范圍內(nèi)空氣濕度大特黄牲交免费视频；冠層頂部20cm蒸發(fā)皿水面蒸發(fā)量信访览细敬笕榇笃ü刹俦剖悠怠；噴灌條件下0～60cm土層內(nèi)土壤含水量較高且變幅較小色网站在线播放，白天地表溫度低超碰在线88二区，晚上地表溫度高。