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所釋放出 來的能量大小所決定的。 四、論述題 (10 分 ) 以下是本題的答案要點,可根據(jù)具體情況酌情給分 分析褶皺區(qū)如何布置工程建筑。因為隧道通過均一巖層有利穩(wěn)定,而背斜頂部巖層受張力作用可能塌落,向斜核部則是儲水較豐富的地段。 ( ) 。 ( ) 21. 承壓水的承壓水位與埋藏深度一致。 ( ) 25.靜力觸探適用于碎石土層。 26.簡述殘積土的成因及特征。一般不具層理,碎塊呈棱角狀,土質(zhì)不均,具有較大孑 L 隙,厚度在山坡頂部較薄,低洼處較厚。平面圖是反映一表地質(zhì)條件的圖。 ? 答:崩塌形成的條件是斜坡前緣的部分巖體被 陡傾結(jié)構(gòu)面分割,并突然脫離母體,翻滾而下,造成巖塊互相沖撞、破壞,最后堆積于坡腳而形成巖堆。 + 29.保障圍巖穩(wěn)定性的途徑有哪些? 答:保障圍巖穩(wěn)定性的途徑主要有兩方面途徑:一是保護圍巖原有穩(wěn)定性,使之不至于降低;二是提高巖體整體強度,使其穩(wěn)定性有所增高。敘述地震效應(yīng)及其所包含各要素。 (2)地震破裂效應(yīng):地震自震源處以地震波的形式傳播于周圍的巖土層中,引起巖土層的振動,當這種振動作用力超過巖石的強度時,巖石就產(chǎn)生突然破裂和位移,形成斷層和地裂隙,● 引起建筑物變形和破壞。 A. 風化作用 B.變質(zhì)作用 C. 成巖作用 D.沉積作用 2.在垂直壓力作用下,巖石沿已有破裂面剪切滑動時的最大剪應(yīng) 力稱為巖石的 ( )。 A.宙 B.代 C. 紀 D.統(tǒng) 6.下列關(guān)于風化作用的敘述,哪項正確 ( )。 A.孔隙水 B.裂隙水 C. 潛水 D.巖溶水 10.斜坡的變形方式有蠕動和下列哪種形式 ( )。 A.承受巖土和水壓力 B.防止地下水人滲 C. 裝飾洞室 D.輔助圍巖灌漿 14.詳細勘察階段,工程地質(zhì)測繪的比例尺應(yīng)選用 ( )。 ( ) 3.與不整合接觸面上的底礫巖巖性一致的巖層形成時間相對較晚。 ( ) 7.利用潛水的等水位線圖可以確定潛水的流向,但不能確定潛水的水力梯度。 ( ) 三、簡答題 (每題 8 分,共計 40 分 ) 1.工程地質(zhì)學及其研究內(nèi)容 ? 2.野外鑒別礦物的步驟 ? 3.何謂地震震級和地震烈度 ? 4.選擇洞軸線位置時應(yīng)考慮哪些因素 ? 5.工程地質(zhì)勘察的任務(wù) ? 四、論述題 (10 分 ) 分析褶皺區(qū)可能存在的工程地質(zhì)問題。為工程的選址、規(guī)劃、設(shè)計、施工提供可靠的依據(jù)。 4.要點: (1)地形:應(yīng)注意利用地形、方便施工。 5.要點: 通過工程地質(zhì)測繪與調(diào)查、勘探、室內(nèi)試驗、現(xiàn)場測試等方法,查明場地的工程地質(zhì)條件, 如場地地形地貌特征、地層條件、地質(zhì)構(gòu)造,水文地質(zhì)條件,不良地質(zhì)現(xiàn)象,巖土物理力學性質(zhì)指標的測定等。由于褶皺構(gòu)造中存在著不同的裂隙,導(dǎo)致巖層 的完整體受到破壞,因此,褶皺區(qū)巖層的強度及穩(wěn)定性較之原有巖層有所降低。 專業(yè)好文檔 Winger TuivasaSheck, who scored two tries in the Kiwis39。d give every award back in a heartbeat just to get across the line this weekend, said (lack of) air up there Watch mCayman Islandsbased Webb, the head of Fifa39。s about how he felt and I would like to speak to him first to find out what his experience was. Uefa has opened disciplinary proceedings against CSKA for the racist behaviour of their fans during City39。s plaint. In a statement the Russian side added: We found no ra cist insults from fans of CSKA. Baumgartner the disappointing news: Mission aborted. The supersonic descent could happen as early as Sunda. The weather plays an important role in this mission. Starting at the ground, conditions have to be very calm winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our daytoday weather lives. It will climb higher than the tip of Mount Everest ( miles/ kilometers), drifting even higher than the cruising altitude of mercial airliners ( miles/ kilometers) a nd into the stratosphere. As he crosses the boundary layer (called the tropopause),e can expect a lot of turbulence. The balloon will slowly drift to the edge of space at 120,000 feet ( Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform. They blew it in 2020 when they got caught cold in the final and they will not ma ke the same mistake against the Kiwis in Manchester. Five years ago they cruised through to the final and so far history has repeated itself here the last try they conceded was scored by Engla