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Sand and gravel are the most used basic materials in the process of engineering construction.

Release Time:

2021-09-15

Sand and gravel are the most used basic materials in the process of engineering construction. For a long time, my country's sand and gravel are mainly derived from mining and river resource mining. In recent years, the scale of infrastructure and real estate construction in various places has been expanding, especially the rapid urbanization process. The demand for construction sand has increased sharply, although Fujian is rich in natural sand and gravel resources

1. Sand and gravel are the most used basic materials in the process of engineering construction. For a long time, my country's sand and gravel are mainly derived from mining and river resource mining. In recent years, the scale of infrastructure and real estate construction in various places has been expanding, especially in the process of urbanization. With the rapid advancement of China's development, the demand for construction sand has increased sharply. Although Fujian is rich in natural sand and gravel resources, natural river sand is a non-renewable resource in a short period of time. As the country strengthens the ecological balance and the environmental protection policy continues to increase, a large number of mines are closed, and the mining of natural sand in lakes and inland rivers is prohibited or restricted, which has caused a shortage of sand and gravel materials for a while, and the contradiction between supply and demand has caused the price of natural river sand. Constantly rising, driven by interests, the supervision of washing sea sand, stone chips or mountain sand is out of control, and the quality of sand and gravel cannot be guaranteed, laying hidden dangers for the project. In order to protect the limited river sand resources, avoid over-exploitation and over-exploitation, which will affect the ecology and the safety of river flood control embankments, shipping and bridges, the replacement of natural river sand by machine-made sand has become an inevitable trend in the development of the industry.

2. At present, China's social development has entered a new era. In order to meet the needs of the economy from high-speed growth to high-quality development, the company is actively and continuously seeking to transform from a single business and trade enterprise to the integration of science, industry and trade, focusing on innovation, coordination, green, and openness. , Share the five development concepts, and realize the adjustment and upgrading of the industry. In view of the fact that the promotion and development of the machine-made sand industry is a practical action to implement Xi Jinping's ecological civilization thought, and a necessary measure to protect the river, marine environment and natural sand resources.