【摘要】：甘肅是我國(guó)沙漠分布的主要省份之一,隨著西部大開發(fā)政策的推廣實(shí)施,未來將會(huì)有更多的公路包括高速公路穿越省內(nèi)的沙漠地區(qū),但是目前省內(nèi)還沒有一整套設(shè)計(jì)經(jīng)驗(yàn)。為了保證高速公路的安全暢通,風(fēng)沙對(duì)公路的危害必須降至最低。本次研究所依托項(xiàng)目是甘肅省第一條風(fēng)沙地區(qū)高速公路。通過對(duì)全線復(fù)雜多變的風(fēng)沙地形進(jìn)行細(xì)致地調(diào)查,查閱相關(guān)參考資料及科研成果,經(jīng)過計(jì)算分析和方案比選,對(duì)高速公路風(fēng)沙路基防護(hù)措施進(jìn)行研究,采用工程類比以及施工期間效果的觀測(cè)來驗(yàn)證方案的可行性,并以此完善設(shè)計(jì)、指導(dǎo)施工。本文研究的主要內(nèi)容根據(jù)沙害對(duì)路基的危害分為兩個(gè)方面。第一、減輕路基風(fēng)蝕為主的路基防護(hù)措施,如防止路基掏空風(fēng)蝕而采取的防護(hù)措施的研究,如路基的填土高度、路基填料、邊坡防護(hù)措施及土工材料的應(yīng)用等。第二、減輕風(fēng)沙通過路基而致沙粒沉落以及沙丘對(duì)路基的掩埋而采取的防護(hù)措施的研究。如路基橫斷面的選擇,工程防沙體系的建立等。為完成研究目標(biāo),本文通過現(xiàn)場(chǎng)調(diào)查和有關(guān)資料的收集整理,分析環(huán)境氣候影響因素;通過對(duì)參數(shù)的計(jì)算分析,獲得研究區(qū)風(fēng)沙活動(dòng)和風(fēng)沙危害特征,主要有臨界起動(dòng)風(fēng)速、輸沙量、主導(dǎo)風(fēng)向、沙源分布等;在進(jìn)行路基的穩(wěn)定性研究時(shí),分析了路基損壞的原因和影響因素,同時(shí)參照區(qū)域舊路的風(fēng)沙侵蝕狀況和實(shí)體工程的建設(shè)情況,以此來確定路基橫斷面形式。針對(duì)不同路段的風(fēng)沙危害特征提出相應(yīng)的路基邊坡防護(hù)形式以及工程防護(hù)體系,從而總結(jié)設(shè)計(jì)經(jīng)驗(yàn),完成研究報(bào)告。以最終能夠形成一個(gè)系統(tǒng)的適合甘肅省實(shí)際的風(fēng)沙地區(qū)高速公路路基防護(hù)的完整經(jīng)驗(yàn)資料,并對(duì)以后的建設(shè)提供一些參考。
[Abstract]:Gansu is one of the major desert provinces in China. With the promotion and implementation of the western development policy, there will be more highways, including highways, passing through the desert areas of the province in the future, but there is not a complete set of design experience in the province at present. In order to ensure the safety and smooth of highway, the harm of wind sand to highway must be reduced to the minimum. This institute relies on the project is the Gansu Province first wind sand area highway. Through the careful investigation of the complex and changeable wind-sand terrain along the whole road, the relevant reference materials and scientific research results are consulted, and the protective measures of wind-sand subgrade of the expressway are studied through calculation, analysis and scheme comparison. The feasibility of the scheme is verified by using the engineering analogy and the observation of the effect during construction, and the design is perfected to guide the construction. The main content of this paper is divided into two aspects according to the harm of sand damage to roadbed. First, the main measures to reduce the roadbed wind erosion, such as the study of the protection measures, such as the height of the embankment, the filling of the roadbed, the slope protection measures and the application of geotechnical materials, etc. Second, the study on the measures to reduce sand subsidence caused by wind sand passing through the roadbed and the sand dune burying the roadbed. For example, the selection of subgrade cross section, the establishment of sand prevention system. In order to achieve the research goal, this paper analyzes the environmental climate influence factors through the field investigation and the collection and collation of related data. Through the calculation and analysis of the parameters, the characteristics of wind-sand activity and wind-sand hazard in the study area are obtained, including critical incipient wind speed, sediment transport amount, dominant wind direction, distribution of sand source, etc. In the study of roadbed stability, the causes and influencing factors of roadbed damage are analyzed, and the cross-sectional form of roadbed is determined by referring to the status of wind-sand erosion of the old road in the region and the construction of solid engineering. According to the characteristics of wind and sand hazard in different sections of road, the corresponding protection forms of roadbed slope and engineering protection system are put forward, and the design experience is summarized and the research report is completed. In order to form a systematic experience of highway roadbed protection in the wind-sand area of Gansu Province, this paper provides some references for future construction.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U416.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 高永,邱國(guó)玉,丁國(guó)棟,清水英幸,虞毅,胡春元,劉艷萍,戶部和夫,王義 ,汪季;沙柳沙障的防風(fēng)固沙效益研究[J];中國(guó)沙漠;2004年03期

2 李宏,趙愛國(guó),莊維健,王宏濤;攔沙環(huán)工程抗風(fēng)蝕性能研究[J];中國(guó)沙漠;2004年02期

3 胡春元,楊茂,楊存良,劉永茂,蔣有則,張潤(rùn)煥;庫(kù)布齊沙漠穿沙公路沙害綜合防治技術(shù)[J];干旱區(qū)資源與環(huán)境;2002年03期

4 何興東,趙愛國(guó),段爭(zhēng)虎,董治寶,李志剛,陳珩;塔里木沙漠公路灌木固沙帶的防護(hù)效應(yīng)[J];生態(tài)學(xué)雜志;2002年04期

5 常兆豐,仲生年,韓福桂,劉虎俊;粘土沙障及麥草沙障合理間距的調(diào)查研究[J];中國(guó)沙漠;2000年04期

6 黃強(qiáng),雷加強(qiáng),王雪芹;塔里木沙漠公路不同地貌部位的高立式沙障阻沙特征[J];干旱區(qū)地理;2000年03期

，

本文編號(hào)：2325689