What are the possible reasons for the sudden collapse of Xi 'an Xiang Yan Road?

Today, let's talk about it. What are the possible causes of ground collapse?

In fact, there are many reasons for ground collapse, such as uneven settlement of subgrade caused by grass-roots institutions, uneven settlement of subgrade, road load disturbance and so on. This is also a common technical problem in modern highway construction. If we want to solve these problems, the most important thing is foundation construction, and then pavement construction. The construction unit should design according to the requirements, with strict requirements, technical specifications and overloaded vehicles, which are also important reasons for road collapse, management and maintenance.

Ground collapse is the loss of ground elevation caused by human factors and natural factors. Human factors mainly include the development and utilization of underground fluid resources such as natural gas, oil and groundwater, as well as the exploitation of solid minerals, karst collapse, consolidation and settlement in soft soil areas, and engineering construction.

Natural factors include volcanic activity, climate change, earthquake tectonic subsidence, in-situ stress change and natural consolidation of soil.

First, because of the development and utilization of underground fluid resources, such as groundwater, many countries and regions have experienced land subsidence for this reason. In the 1920s, ground subsidence occurred in the areas where groundwater was concentrated in Shanghai and Tianjin.

China is also one of the countries with the most lava in the world. With the rapid development of national economy in lava areas, the development of water resources, land resources and mineral resources along the line is also constantly strengthened, and the karst collapse problem caused by this is becoming more and more serious, which has become the most important geological disaster problem in karst areas.

Coal mine collapse is mainly distributed in coal mine goaf, which is the most prominent disaster in coal mining. More than 20 provinces and regions in China have experienced goaf collapse, especially in Shandong, Henan, Anhui, Shanxi and Heilongjiang provinces.

High-rise buildings with strong engineering environmental effects and engineering environmental effects are also new land subsidence factors in recent years. In the process of regional urbanization, this problem is becoming more and more prominent, and land subsidence appears more and more in the large-scale urban reconstruction and construction in some areas.