The Taklimakan Desert is the second largest mobile desert in the world, known as the "Sea of Death". There is no water, no electricity, no signal, and no vegetation, birds and beasts. It is under such harsh natural conditions that a "road of life" passing through the "sea of death" - the Weijie Desert Highway is about to be completed and opened to traffic.
1. The environment is harsh, and the construction of the Weijie Desert Highway is facing challenges
The Yuqi Desert Highway connects Yuli County and Qiemo County in Xinjiang Uygur Autonomous Region. It is located in the Tarim Basin between the southern slope of the Tianshan Mountains and the northern foothills of the Altun Mountains. It passes through the hinterland of the Taklimakan Desert, with a total length of about 334 kilometers, of which 307 kilometers are desert roads. At present, it is the desert road with the longest mileage, the widest distribution of mobile sand dunes, the worst construction conditions and the most difficult construction in the world. Someone once sighed that building a highway under such conditions is more difficult than reaching the sky.
(Taklimakan Desert)
There are more than 30 tall sandy mountains in the area passing through this desert highway, the highest sandy mountain is more than 100 meters high, which is equivalent to the height of a 30-story building; in addition, there are nearly 30 depressions between the hills, the longest 12 km. Digging the sand hills and filling the depressions is a huge test for the builders.
(Weiqi Desert Highway)
In addition to the complex terrain, the climatic conditions are also a major challenge. The Taklimakan Desert is full of wind and sand in spring, hot and hot in summer, and the surface temperature is close to 70 degrees Celsius. There is no water, no electricity, no signal, and no trace of life here all year round. It was under such conditions that the builders stood firm for thousands of days and nights.
(Weiqie Desert Highway Construction)
The Tarim River Bridge is nearly 1,300 meters long. It is the only bridge along the entire Yuji Desert Highway, and it is also a control project for the Yuji Desert Highway to successfully cross the Tarim River. The construction of this bridge at that time was also based on the protection of the local ecological environment and basic farmland.
(Tarim River Bridge)
Such a huge and shocking desert highway project must be supported by strong sand and gravel aggregates. Today we will discuss how sand and gravel aggregates serve the construction of Weijie desert highway.
2. Sand and gravel aggregates help the smooth construction of the Weijie Desert Highway
1. Road construction has higher requirements for sand and gravel aggregates
The construction of the Weiqie Desert Highway is beneficial to the country and the people, and is a necessary move to improve the investment environment in Xinjiang and enhance the local economy. In order to ensure the project quality and construction effect in desert highway construction, every link must be strictly controlled, and sand and gravel aggregate is an important part of it.
(Sand aggregate)
Generally speaking, the technical indicators of aggregate processing should meet the technical requirements of my country's current industry norms and relevant standardized documents and the requirements of various structural layers of expressway projects. The screen size should be reasonably, scientifically and accurately configured according to the gradation and passing rate requirements of each grade of finished products, combined with equipment output, mountain lithology, size angle and amplitude of the vibrating screen.
Highway engineering requires high quality standards for sand and gravel materials, especially high-grade concrete and asphalt pavement materials. Therefore, we usually need to use a tertiary crushing process to meet the requirements of aggregates used in pavement asphalt.
2. Production process of gravel aggregate for highway:
Generally, according to the hardness of the material, we will match different equipment. For soft materials, these processes are generally required:
One broken into one jaw crusher
(Bellian Machine Jaw Crusher)
The second crusher is 1 to 3 impact crushers
(Bellian Machine Impact Crusher)
Three broken into one impact crusher + dust removal equipment
(Bellian Machine Impact Crusher)
For hard materials, the equipment configuration is generally:
a jaw crusher;
The second crusher is 1-2 cone crushers;
(Bellian Machine Cone Crusher)
The three breakers are 1 to 3 sets of impact breaker/shaping machines, and then the water washing process is adopted to reduce the dust content.
(Bellian Mining Machinery Manufacturer HVI Sand Making Machine)
After the three-stage crushing process, the sand and gravel produced are often of excellent grain shape and high quality, which can better meet the requirements of highways for high-quality sand and gravel aggregates.
3. Sand and gravel production should pay attention to green, low-carbon and intelligent development
For high-quality sand and gravel production, attention should also be paid to green, low-carbon and intelligent production models.
For high-quality sand and gravel aggregates, firstly, the particle shape should be good, secondly, the gradation should be reasonable, and thirdly, the soil and mud content should meet the standard. When it comes to the content of mud and soil, in the production process, we generally install dust removal equipment or crushing equipment for dust removal and noise reduction, and finally use a sand washing machine for cleaning, so as to obtain clean sand and gravel and realize a green production mode.
(Bellian Machine Sand Washer)
In terms of intelligence, there are many new technologies that help the construction of digital mines on the market, such as three-dimensional digital measurement and control, automatic control systems, safety monitoring and early warning support platforms, interaction platforms between managers and production equipment, equipment operation management systems, etc.
The application of these technologies can timely monitor the production of equipment and check whether the sand and gravel aggregates meet the standards, etc., while realizing intelligent management, it can also ensure the quality of sand and gravel production.
With the completion of the Weijie Desert Highway, it will definitely bring a unique shocking project to the world! Sand and gravel aggregates play an important role in highway construction. For sand and gravel enterprises, only by producing high-quality sand and gravel aggregates can guarantee the construction of project quality and realize the freedom of sand and gravel wealth.
