With the improvement of industrial and electromechanical strength, China has recently made a lot of achievements in the field of energy and built a large number of new green power stations such as hydropower stations and photovoltaic power stations. Recently, China once again built power stations under the ocean, which spread all over the world for a time. American experts lamented that China's infrastructure is no longer low-key this time, A special power generation equipment called tidal power station has been developed, which can be placed in the ocean current on the seabed and generate power by using the flow of ocean current or tidal flow. This technology of building the power station on the seabed can obtain considerable power generation capacity. If it is used on a large scale, it can meet the needs of almost all coastal areas, Some foreign experts believe that China's infrastructure has made another key achievement this time.
At present, the development of various power generation technologies for the development and utilization of marine energy is very popular, and tidal energy is one of the most concerned technologies. As we all know, tides occur on the coasts all over the world every day due to the gravity of the moon, which contains huge energy. It is estimated that the total amount of tidal energy along the coast of China is more than the total annual power generation of China, Only about 1 / 10 of them need to be mined to meet the needs of almost the whole coastal area. Moreover, it is valuable that compared with other marine energy, the exploitation of tidal energy is more convenient and its power generation capacity is more stable. It is not as large and small as wind power and photoelectric, so the utilization rate of electric energy is also higher.
As early as the 1980s, China built the largest Jiangxia tidal power station in Asia in Zhejiang, which verified the great potential of tidal power generation technology. Now Chinese scientists have gone further and developed tidal power generation equipment with simpler structure and lower cost, compared with the fixed tidal power station built on the coast, This kind of power generation equipment can be conveniently installed on the seabed to develop more abundant tidal energy in the seabed. Although the structure is simpler, using advanced modern technology, their power generation efficiency is not inferior to that of fixed large-scale tidal power stations. The most important thing is that this kind of power generation equipment can be very convenient for mass production and large-scale layout on the seabed in coastal areas, Obtain extremely large total power generation. Nowadays, China and the world are facing increasing pressure on environmental protection, and there is an increasing demand for various new green energy sources. Tidal power generation is expected to become the main force of marine green energy power generation in the future. Now Chinese engineers are studying various schemes for large-scale utilization of marine energy, and some experts have proposed a comprehensive marine power generation platform, The part floating on the water surface is equipped with wind turbines and solar cells to generate electricity by using wind and light energy. The water line is equipped with wave energy power generation equipment to generate electricity by using water surface waves. The underwater fixed device is equipped with tidal energy and ocean current energy power generation equipment, as well as temperature difference power generation equipment to realize the all-round exploitation of marine energy.
How powerful is China's infrastructure capability to enter the seabed? What kind of national weapon was used? It turned out that in order to realize the construction of Shenjiang high-speed railway subsea tunnel, another heavy weapon of a big country was officially launched. It is Shenjiang No. 1 shield machine. After seeing this shield machine, even foreigners couldn't help praising it.
Why does China's infrastructure march into the ocean attract the attention of the world? In fact, other countries do not have the subsea tunnel project. For example, there is a subsea tunnel in the English channel, which connects the British mainland and the European continent. However, this tunnel was built during the period of relatively strong national strength of Britain. If there are 10 Britain, it is estimated that they will not dare to build this subsea tunnel. After all, the quantities of the project are too large and the technical difficulty is very high, Without first-class construction technology, no country dare to carry out subsea tunnel project.
However, in China's hands, the construction of subsea tunnel is common. In addition to the Shenzhen Jiang high-speed railway subsea tunnel project, there are subsea tunnel sections in the Hong Kong Zhuhai Macao Bridge and the Shenzhen China channel. In addition, the planned channel from Yantai to Dalian will also be realized by subsea tunnel. In the future, China's subsea tunnel will cross the Strait and connect Hainan Island and Taiwan Island, The reason why we dare to make such bold plans is mainly because China is now strong and has strong infrastructure strength, so we dare to challenge a series of impossible projects.
Of course, at present, there are mainly two methods for the construction and excavation of subsea tunnel. One is subsea immersed tube tunnel, which is to install the built large immersed tube to the seabed to build a tunnel, and the other is to excavate with shield machine. The construction difficulties of both methods are very high. Now China has mastered these two technologies, Whether to choose immersed pipe or shield machine construction mainly depends on the terrain of the construction site, and then adjust measures to local conditions. For example, large immersed pipe is used in deep and medium tunnel, and subsea tunnel shield method is used in Shenjiang high-speed railway.
In the field of shield machine technology, who can imagine that as early as more than ten years ago, China had to spend a lot of money to introduce shield machines abroad. Even second-hand shield machines, China also needs to pay a lot of money. If all domestic projects rely on imported shield machines, it is difficult to estimate the expenditure alone. Therefore, we must break through the independent shield machine technology. Now in this field, China has become a world-class country and no longer needs to look at the face of foreign countries. Moreover, compared with the shield machines in Germany and Japan, the price of domestic shield machines is only half or even lower, which is just the price of cabbage. As domestic shield machines begin to enter the international market, more and more countries begin to give up the products of Germany and Japan and choose Chinese shield machines instead, Even India, a country that disdains Chinese manufacturing, has now bought Chinese shield machines.
With the blessing of these great powers, it is no wonder that China's infrastructure projects can proceed so smoothly. In addition to completing domestic infrastructure projects and challenging more and more impossibilities, China's infrastructure is now starting to go abroad. For example, Indonesia asked us to help build the first high-speed railway in Southeast Asia, which can only stare at next door neighbor Japan, If we had not made technological breakthroughs in these big countries, we might still face the same dilemma as India.
