20xx年電大工程地質(zhì)期末復(fù)習(xí)考試資料小抄(完整版小抄)-閱讀頁
2024-11-03 11:29本頁面
【正文】 判斷巖層的相對新老關(guān)系。與不整合上底礫巖巖性相同的巖層形成時間較早。 如果巖層與巖漿巖為沉積接觸，則沉積巖形成較晚，如果巖層與巖漿巖為侵入接觸，則沉積巖形成較早。 在地震作用影響下，地面出現(xiàn)的各種震害和破壞稱為地震效應(yīng)，地震效應(yīng)包括，地震力效應(yīng)、地震破裂效應(yīng)，地震液化效應(yīng)和地震激發(fā)地質(zhì)災(zāi)害效應(yīng)。 （ 2）地震破壞效應(yīng)：地震自震源處以地震波的形式傳播與周圍的巖土層中，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，形成斷層和地震隙，引起建筑物變形和破壞。 （ 4）地震能激發(fā)斜坡巖土體松動、失穩(wěn)，發(fā)生滑坡，崩塌等不良地質(zhì)現(xiàn)象。 （ 1）褶皺核部巖層由于受水平擠壓作用，產(chǎn)生許多裂隙，直接影響到巖體的完整性和強度，在石灰?guī)r地區(qū)還往往使巖溶較為發(fā)育，所以在核部布置各種建筑工程，如廠房、路橋、壩址、隧道等，必須注意巖層的坍落、漏水及涌水問題。 在的工程地質(zhì)問題。另外由于轉(zhuǎn)正端更易遭受風(fēng)和作用影響，因此，工程應(yīng)避免布置在轉(zhuǎn)折端。 。平原區(qū)地下水一般埋藏較淺，在開挖土體過程中不可避免地涉及到地下水：地下水可能基坑涌水，流砂使影響施工，基 XX 及到周圍建筑物產(chǎn)生較大變 形，影響因素：重要有底下水 X 存介質(zhì)：地下水位開挖面積等。 Visafree policy brings Chengdu biz, tourism boost. Making national headlines several times, Chengdu39。s level of internationalization. The policy will also bring direct economic revenue, Li said. Chengdu has many cultural legacies and is also a paradise for panda lovers with the world39。s ancient indigenous religion, while Du jiang yan is considered to be the oldest functioning watercontrol project in the world. Chengdu ranked third in tourist facilities, management and services among 60 Chinese cities in a customer satisfaction survey released last year. But, Li added that efforts are still needed to develop more tourism products, improve English services and provide accurate translation of traffic signs and scenic billboards. Zhao Yun, chairwoman of British Chamber of Commerce Southwest China, told China Daily that his colleagues found the policy very convenient. A British client once flew here and stayed for just one day to check her ordered goods, she said. Zhao was born in Shanxi province, but she has lived in Chengdu for more than 10 years. My life was like a running race moving from place to place. I also lived in Beijing and Shanghai before, she said. But Chengdu is a place that you never want to leave once settling down. It is now my second hometown, she said. If the environment is further improved, the city will attract more people to visit and live, with the 72hour visafree policy and pelling conditions in transportation, culture, climate and cuisine, he said. Foreigners also gave positive feedback on the policy. A spokesman from Dell Inc said the pany has a global hub of operation in Chengdu, so the threeday visa has an immediate and positive influence on the pany39。s public security bureau shows some 100 foreign visitors enjoyed the 72hour policy by the end of March, most of them from the United States, the United Kingdom and Germany. Chengdu also reported robust growth in its overall tourist industry last year. Official statistics show that it received some 150 million tourists last year, an increase of 28 percent from 2020. Around million came from abroad, an increase of 12 percent. Total revenue from tourism surpassed 133 billion yuan ($). During his visit to Kazakhstan in September, Chinese President Xi Jinping proposed that China and Central Asia join hands to build a Silk Road economic belt to boost cooperation. The idea has been widely echoed in Central Asian countries, being an encouraging blueprint for Chinese areas along the Silk Road that has linked Asia and Europe for more than 2,000 years. In the next three weeks, China Daily reporters will travel through the belt in China and in Kazakhstan, Uzbekistan and Turkey. They will show the progress and expectations of the countries, businesse s and peoples on the route. Shaanxi the start of the ancient Silk Road has positioned itself as the new starting point for the development of the Silk Road Economic Belt, which will strengthen China39。an. Lou held a joint interview with 27 media, including China Daily, the first in a series of interviews entitled Chinese Media Along the Silk Road. The interviews will be in Shaanxi and Gansu provinces and the Xinjiang Uygur autonomous region, as well as Kazakhstan, Uzbekistan and Turkey. The media group held the first interview on Wednesday morning in Xi39
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