共查询到20条相似文献，搜索用时 15 毫秒
1.
It is necessary to construct the undersea tunnel across the Taiwan Straits because it would help strengthen communication between Taiwan and the mainland, promote economic and cultural exchanges, and uphold national unification and territorial integrity. Nowadays, there are many undersea tunnels in the world; the English Channel Tunnel and the Seikan Tunnel are two of the most famous. Rich experience has been obtained during the exploration, surveying, design, construction and operation of these undersea tunnels. So, technologically, it is completely feasible to construct the undersea tunnel of the Taiwan Straits. The total length of the undersea Taiwan Straits tunnel is about 220?km; however, water along most of the proposed tunnel site, is less than 50?m deep and the geological condition of the site is relatively good. Although technical difficulties exists in design and construction, there are some favorable aspects. It is, therefore, necessary to start a study by launching some exploration surveys and collecting related data. 相似文献
2.
The construction of bridges and tunnels plays an important role in the social and economic development of cities and local regions. The planning of the bridge and tunnel across Taiwan Straits will have a positive effect on the economic development at each stage: preplanning, engineering construction, and the completion of the project. The two sides of Taiwan Straits have the advantage of a suitable location, consanguineous relationship, and appropriate geographic conditions. Currently, there are many economic and cultural communications between both sides of the Straits. The bridge and tunnel from Xiamen to Jinmen can be regarded as the beginning of the “golden link belt.” The total capability for sustainable development of Fujian Province ranks the sixth among 31 provinces in China, which will provide powerful support for the construction of the bridge and tunnel. 相似文献
3.
The necessity and the preliminary tentative plan for the construction of the undersea tunnel across Taiwan Strait are expounded in this atricle. The strait undersea tunnels, which have been built and investigated in the world, and their engineering characteristics and construction methods have been introduced herein briefly. Taiwan has been a part of China since ancient times and the people between the mainland and Taiwan are kindred compatriots in the extended family of the Chinese multinational country. For a long time, the people between southeast of China and Taiwan have had frequent communication in economy and culture. With the progress of times and the need of development, it has been put forward to build a safe and reliable undersea tunnel that is not affected by the environment across Taiwan Strait, and one which is also a magnificent project for the China in the long-term. Whether by using a bridge or an undersea tunnel or both across the strait is a problem worthy of further research. According to such conditions as the weather of Taiwan Strait, depth of water, undersea terrain, possibility of engineering and hydrological geology under the sea, as well as the possibility of Taiwan Strait as a main shipping passage from south to north of China and the experience of existing passage across strait in the world, the primary analysis shows that the scheme of an undersea tunnel should be considered. Therefore the concept of the undersea tunnel engineering across Taiwan Strait is introduced in detail here. 相似文献
4.
The necessity and the preliminary tentative plan for the construction of the undersea tunnel across Taiwan Strait are expounded in this atricle. The strait undersea tunnels, which have been built and investigated in the world, and their engineering characteristics and construction methods have been introduced herein briefly.?Taiwan has been a part of China since ancient times and the people between the mainland and Taiwan are kindred compatriots in the extended family of the Chinese multinational country. For a long time, the people between southeast of China and Taiwan have had frequent communication in economy and culture. With the progress of times and the need of development, it has been put forward to build a safe and reliable undersea tunnel that is not affected by the environment across Taiwan Strait, and one which is also a magnificent project for the China in the long-term.?Whether by using a bridge or an undersea tunnel or both across the strait is a problem worthy of further research. According to such conditions as the weather of Taiwan Strait, depth of water, undersea terrain, possibility of engineering and hydrological geology under the sea, as well as the possibility of Taiwan Strait as a main shipping passage from south to north of China and the experience of existing passage across strait in the world, the primary analysis shows that the scheme of an undersea tunnel should be considered. Therefore the concept of the undersea tunnel engineering across Taiwan Strait is introduced in detail here. 相似文献
5.
《Marine Georesources & Geotechnology》2013,31(3-4):261-267
The construction of bridges and tunnels plays an important role in the social and economic development of cities and local regions. The planning of the bridge and tunnel across Taiwan Straits will have a positive effect on the economic development at each stage: preplanning, engineering construction, and the completion of the project. The two sides of Taiwan Straits have the advantage of a suitable location, consanguineous relationship, and appropriate geographic conditions. Currently, there are many economic and cultural communications between both sides of the Straits. The bridge and tunnel from Xiamen to Jinmen can be regarded as the beginning of the “golden link belt.” The total capability for sustainable development of Fujian Province ranks the sixth among 31 provinces in China, which will provide powerful support for the construction of the bridge and tunnel. 相似文献
6.
7.
The collision between Eurasian and Pacific plates along the eastern margin of the Asian continent resulted in formation of a series of island-arcs, one of which is the Taiwan Island-arc, and the Taiwan Straits is a foreland basin in the continent-arc collision zone. The Quaternary fine-grained sediments occur evenly in the upper part of the basin, and the Pliocene deposits in the lower part. The stepped faults run in the deposits, indicating that the tectonic movement tended to weaken after the Pliocene. Strong seismic zones of Taiwan Island released large amount of plate overthrust-collision compressive stress and have their screen and prevention roles for the straits. Only the intersections between offshore NW-trending transform-like faults and seashore NE-trending faults on the southern and northern terminations of the Island are prone to strong earthquakes. The possibility of occurrence of M ≥ 6 earthquake should be very low in the area for the planned future tunnel. Moreover, the seismic intensity is rapidly attenuated from the surface downward. Thus, the seismic intensity for the tunnel under the seabed will be much lower. In seismotectonic view, the construction of tunnel is feasible. 相似文献
8.
As a kind of transportation mode for crossing channels,undersea tunnel has incomparable advantages for its directness,convenience,fastness,insusceptibility to weather conditions,and smaller influences on environments.In recent years,with the development of undersea tunnel construction,the design and construction technologies have been greatly enhanced.The first undersea tunnel in China has just been built.Waterproofing is the key technique of undersea tunneling.A new concept of waterproofing scheme of grouting,sealing,draining and divided sections was adopted in the construction of the tunnel based on the researches,the in-situ geological features,the astuteness of the current technology,and the cost of construction.The structural details of the sealing and draining system are introduced to illustrate the salient features of the new waterproofing technique.It is hoped that experiences described in the paper can offer guidance for the construction of the extensive undersea tunnels in the coming years. 相似文献
9.
This article discusses the possible socioeconomic impact of Taiwan Strait Tunnel from the perspective of the relationship between the construction of Taiwan Strait Tunnel and the socioeconomic development of the two sides of the Taiwan Strait and the surrounding areas. First of all, the construction of Taiwan Strait Tunnel in its conceptual stage depends on the socioeconomic development of the two sides of the Strait. Important basic conditions—such as the mainland's and Taiwan's future sustainable economic growth above what has already been achieved; their further development of economic, trade, and social ties; their political dialogue based on “the principle of one China”; and the progress of the peaceful reunification of the motherland—will decide the construction of the Taiwan Strait Tunnel. Under such conditions, once the Taiwan Strait Tunnel is operable, it will create a huge demand pull on the two sides of the Taiwan Strait and their surrounding areas for a long period and, thus, will bring about a sustainable increasing economic upsurge in the two sides. Secondly, once the Taiwan Strait Tunnel is open to traffic, its transport ability will be tremendous and will greatly influence the economic development of the two sides of the Strait and enhance their economic and trade ties and their personnel exchange. At the same time, the tunnel will not only form a new traffic pattern of the two sides of the Taiwan Strait, but it will also improve their traffic structure and expand their traffic scale to a large extent. It is certain that the construction of Taiwan Strait Tunnel will be a highly complex project of an all-time grand scale to be constructed over quite a long period. It will encounter a lot more restrictive factors than have ever been met in the fields of design, programming, techniques, equipment, organization of construction, and the operation and maintenance of the tunnel and line. Moreover, it will also encounter many important restrictive factors as a result of its socioeconomic impact. 相似文献
10.
During the construction process of Qingdao Jiaozhou Bay Undersea Tunnel, the faults and other unfavorable geological discontinuities were often encountered. To study the water inrush mechanism in the faults, both physical model test and numerical analysis were carried out. The results of crown displacement and hydraulic pressure of the monitoring sections in the physical model and numerical model were analyzed in this paper. It was found that the displacement and hydraulic pressure in the process of tunnel construction are often interacted as both cause and effect, and the lower of hydraulic pressure is often accompanied with the growth of its displacement. The changing of the excavation disturbed zone during the excavation in the undersea tunnel was also studied. The results show that the excavation disturbed zone in fault is larger than that in surrounding rock mass, and the excavation disturbance effects in the filling type fault are both transient and persistent. When the displacement and hydraulic pressure in the undersea tunnel change sharply during excavation, there are relatively slow and continuous change trend of the displacement and hydraulic pressure. For practical purposes, to prevent water inrush in the undersea tunnel, more attentions should also be paid to the undersea tunnel after excavation. 相似文献
11.
Bin Shi Hongzhong Xu Bin Chen Dan Zhang Yong Ding Heliang Cui Junqi Gao 《Marine Georesources & Geotechnology》2003,21(3):333-343
Taiwan Strait Tunnel (TST) will be an extra-long tunnel or tunnel-bridge complex, running over 150 km of seafloor geologic body with complicated topographic and geologic units. It is therefore necessary to measure and monitor the strain distribution along the TST. In this article, the Brillouin optical time-domain reflectometer (BOTDR), a newly developed strain measurement and monitoring technology, is introduced, and the feasibility of its application in the strain monitoring for TST is analyzed through the monitoring achievement with BOTDR of a tunnel located in Nanjing City, China. The results indicate that the BOTDR has many unique merits such as distributed measurement, long-distance, real-time, and resistibility for strain monitoring application in a tunnel such as TST. Finally, apreliminary scheme for BOTDR application in TST monitoring is proposed. 相似文献
12.
China is arguably one of the countries where the most tunneling and underground projects are being performed. Recently in China, it has often been necessary to construct tunnels under many types of conditions and to develop new techniques. Currently, some advanced construction techniques cannot be appropriately applied to different types of underground conditions, and many traditional methods are still often used. However, because of the progress in tunnel boring machines (TBM), innovations are required for the construction method. This article introduces the current situation of TBM both in western countries and in China, and examines the future of TBM in China. 相似文献
13.
China is arguably one of the countries where the most tunneling and underground projects are being performed. Recently in China, it has often been necessary to construct tunnels under many types of conditions and to develop new techniques. Currently, some advanced construction techniques cannot be appropriately applied to different types of underground conditions, and many traditional methods are still often used. However, because of the progress in tunnel boring machines (TBM), innovations are required for the construction method. This article introduces the current situation of TBM both in western countries and in China, and examines the future of TBM in China. 相似文献
14.
沉管在海底的位置靠露在水上的测量棱镜塔目标位置反求,为及时知道水下对接数据,调整施工,要求计算机实时通讯,同步观测棱镜目标,实时显示水底管段的位置特征。结合嘉兴电厂海底隧道工程,介绍了沉管隧道对接的测量理论和实施措施。 相似文献
15.
16.
隧道技术是IPv6协议的1个组成部分,按照底层的承载协议不同,分为IPv4隧道和IPv6隧道。文中描述了未来将广泛应用的IPv6隧道的原理,目前各种主流网络操作系统对IPv6隧道的支持情况,提出如何在CERNET2高速网络上利用IPv6隧道来传输IPv4流量。 相似文献
17.
18.
美国水下无人系统发展处于世界领先水平,跟踪和了解其现状和发展趋势具有非常重要的意义。 介绍了美国若干个水下无人系统的发展规划内容,描述了美军典型的水下无人系统的主要使命任务和技术性能,分析了美军水下无人系统的发展特点和趋势。 相似文献
19.
The collision between Eurasian and Pacific plates along the eastern margin of the Asian continent resulted in formation of a series of island-arcs, one of which is the Taiwan Island-arc, and the Taiwan Straits is a foreland basin in the continent-arc collision zone. The Quaternary fine-grained sediments occur evenly in the upper part of the basin, and the Pliocene deposits in the lower part. The stepped faults run in the deposits, indicating that the tectonic movement tended to weaken after the Pliocene. Strong seismic zones of Taiwan Island released large amount of plate overthrust-collision compressive stress and have their screen and prevention roles for the straits. Only the intersections between offshore NW-trending transform-like faults and seashore NE-trending faults on the southern and northern terminations of the Island are prone to strong earthquakes. The possibility of occurrence of M?≥?6 earthquake should be very low in the area for the planned future tunnel. Moreover, the seismic intensity is rapidly attenuated from the surface downward. Thus, the seismic intensity for the tunnel under the seabed will be much lower. In seismotectonic view, the construction of tunnel is feasible. 相似文献
20.
Yiguo Xue Binghua Zhou Daohong Qiu Maoxin Su Chuanqi Qu Xueliang Zhang 《Marine Georesources & Geotechnology》2013,31(10):1267-1276
AbstractThe overlying rock thickness of a subsea tunnel controls its vertical line. It not only ensures the safety and stability of tunnel construction period and operation period, but also ensures the economy of subsea tunnel. In the current research, few papers give full consideration to the complex indicators of prediction the overlying rock thickness. However, in this study, a hybrid intelligent system was established to predict the overlying rock thickness of a subsea tunnel based on Qingdao Kiaochow Bay Subsea Tunnel, China. The sea depth, basic quality index of rock mass, soft soil layer thickness, permeability coefficient, and construction management level were selected as the main factors influencing the overlying rock thickness. Using the data obtained from project site exploration, objective weight factors were calculated using rough set theory, and subjective weight factors were calculated using the analytic hierarchy process. Furthermore, the combination of weights was obtained for each factor. Finally, the weight of influencing factors was incorporated into the extension model, and the overlying rock thickness of pending section was calculated. The results of overlying rock thickness prediction model are consistent with the actual value, indicating that the model has good engineering applicability and application value. 相似文献