The earthquake is because of mining

1. Nothing<

is the reason for the movement of Indian plate

mining energy is only a few hundred meters

the occurrence of earthquakes is several kilometers, dozens of kilometers underground

even hundreds of kilometers

2.

there is a certain relationship between frequent earthquakes and underground mining, but the relationship is relatively small, because most of the earthquakes in Sichuan are caused by tectonic earthquakes, that is to say, the earthquake is mainly caused by deep underground rock fracture and dislocation, which rapidly releases the long-term accumulated energy and spreads out in all directions in the form of seismic waves, The shaking ground motion caused by moving to the ground is called tectonic earthquake this kind of earthquake is the most frequent and destructive, accounting for more than 90% of the world's earthquakes

among them, the third kind of collapse earthquake is the type of earthquake in the question: the earthquake caused by the collapse of underground caves or the top of mines is called collapse earthquake< this kind of earthquake is relatively small in scale and few in frequency. Even if there are, it often occurs in limestone areas with dense karst caves or large-scale underground mining areas

therefore, many earthquakes in Sichuan are mainly caused by many mountains and frequent crustal movement< br />

3. [generation and types of earthquakes]
earthquakes can be divided into natural earthquakes and artificial earthquakes. In addition, some special cases will also proce earthquakes, such as large meteorite impact on the ground (meteorite impact earthquake). There are many reasons for the vibration of the earth's surface. According to the causes of earthquakes, earthquakes can be divided into the following categories:

1. Tectonic earthquake
e to the rupture and dislocation of rocks deep underground, the energy accumulated for a long time is released rapidly and propagated in all directions in the form of seismic waves. The shaking ground motion caused by earthquakes to the ground is called tectonic earthquake. This kind of earthquake is the most frequent and destructive, accounting for more than 90% of the world's earthquakes< Volcanic earthquake
earthquakes caused by volcanism, such as magmatism and gas explosion, are called volcanic earthquakes. Only in volcanic active areas can volcanic earthquakes occur, which only account for about 7% of earthquakes in the world
3. Collapse earthquake
the earthquake caused by the collapse of underground cave or top of mine is called collapse earthquake. The scale of this kind of earthquake is relatively small, and the frequency is very few. Even if there are, it often occurs in limestone areas with dense karst caves or large-scale underground mining areas< Inced earthquake
the earthquake caused by reservoir water storage and oilfield water injection is called inced earthquake. This kind of earthquake only occurs in some specific reservoir area or oil field area
5. Artificial earthquake
the ground vibration caused by underground nuclear explosion and explosive blasting is called artificial earthquake. Artificial earthquake is caused by human activities. Such as instrial blasting, underground nuclear explosion caused by vibration; High pressure water injection in deep wells and Impoundment of large reservoirs increase the pressure of the earth's crust and sometimes ince earthquakes
the place where the seismic wave originates is called the source. The vertical projection of the source on the ground is called the epicenter. The depth from the epicenter to the source is called the source depth. Generally, shallow source earthquakes with focal depth of less than 70 km, medium source earthquakes with focal depth of 70-300 km and deep source earthquakes with focal depth of more than 300 km are called. Destructive earthquakes are usually shallow earthquakes. For example, the focal depth of the 1976 Tangshan earthquake was 12 km.

4. The building owner said that it is true that mining may cause earthquakes

combined with the case, the explanation is as follows:

in December 1989, an earthquake occurred in Newcastle, Australia, which was the most serious earthquake in the history of the country. The cause of the earthquake was mining< In December 1989, a 5.6 magnitude earthquake occurred in Newcastle, New South Wales, Australia, causing 13 deaths, 160 injuries and a loss of 3.5 billion US dollars, making it the most serious earthquake in the history of Australia. However, the fuse of the earthquake was caused by the force that changed the stratum structure e to the continuous mining for more than 200 years. The discovery came from Christie Klaus of the Earth Observatory at Columbia University

Klaus presented his findings at the American Geophysical Society last month. He believed that the local miners moved thousands of tons of coal, which put great pressure on the formation and eventually led to the earthquake

in addition, the more important reason is that in order to prevent the coal from being washed away, a large amount of groundwater is pumped away. For every ton of coal g, more than 4.3 times as much water is pumped away, Klaus said. In order to meet other needs in the process of mining and ore making, another 150 tons of water need to be pumped away for the collection of each ton of coal. The decrease of groundwater puts great pressure on the earth's crust< There are many cases of earthquake caused by human activities. Klaus pointed out that in the past 60 years, at least 200 earthquakes were caused by human activities, which was very rare before World War II. Most of these man-made earthquakes are caused by mining, and nearly a third are caused by reservoir construction. In addition, oil and gas proction can also cause earthquakes< Klaus pointed out that the three largest man-made earthquakes so far were all in gasri, Uzbekistan. Due to natural gas exploitation, three large earthquakes occurred continuously from 1976 to 1984, with magnitudes above 6.8 and the largest reaching 7.3

he also said that earthquakes caused by human behavior are more dangerous, especially in earthquake prone areas. Because people are rarely prepared for this, for example, the earthquake in Australia is not big, but because Australia is generally not an active place of crustal movement, the buildings in the city have no seismic capacity, resulting in greater losses

on the other hand, areas that are already seismically active are more likely to be triggered by earthquakes, because the pressure is formed over a long period of time, and once it breaks out, the consequences will be out of control

Claus's research has made many geologists start to think about whether there is a way to avoid man-made earthquakes. Klaus himself believes that the only way to avoid it is not to extract groundwater while mining. But the problem is that many profit oriented miners are not aware of this

hope to help you

personal declaration: I am HK - honest king, not the abbreviation of Hong Kong, remember

5. In a small area, the stress release caused by the development of mineral resources may ince earthquakes, but the magnitude is often very small

but for the global large-scale frequent earthquake and volcano events, human behavior on the earth's surface has little impact on them

6. Earthquake is the ground vibration caused by the dislocation fracture of underground rock under the action of stress. It is a natural phenomenon like typhoon, rainstorm, flood and lightning. Earthquakes occur every day on the earth, and there are about 5 million earthquakes every year in the world, most of which are not felt by people because of their small magnitude. Among them, there are more than 50000 sensitive earthquakes, nearly a thousand of which cause damage, and only a dozen of which cause great damage above magnitude 7, most of which occur in sparsely populated areas. Basic knowledge of earthquake the source of an earthquake is called the source; The place on the ground opposite to the source is called the epicenter; The distance from other places on the ground to the epicenter is called epicenter distance; The distance to the source is called the source distance; The vertical distance from the epicenter to the source is called the focal depth. When an earthquake occurs,
the ground is subject to huge vibration, which is caused by the seismic wave generated by the source, and the seismic wave is divided into P-wave and S-wave. The longitudinal wave is like a domino. You push me and I push it. It propagates from a straight line to the surrounding, and its speed is fast. It vibrates up and down to the
ground vibration
S-wave propagates around like water wave, its speed is slower than P-wave, and it vibrates to the ground from left to right. Therefore, when an earthquake occurs, people first feel the P-wave that vibrates up and down, and then feel the S-wave that wobbles a few seconds later.

7.

According to the causes of earthquakes, earthquakes can be divided into the following categories: tectonic earthquakes. The earthquake caused by the dislocation and rupture of deep underground strata is called tectonic earthquake. This kind of earthquake occurs many times and has great destructive power, accounting for more than 90% of the earthquakes in the world

volcanic earthquake. Earthquakes caused by volcanism, such as magmatism and gas explosion, are called volcanic earthquakes. Only in volcanic active areas can volcanic earthquakes occur, which only account for about 7% of earthquakes in the world

collapse earthquake. The earthquake caused by the collapse of underground cave or top of mine is called collapse earthquake. The scale of this kind of earthquake is relatively small, and the frequency is very few. Even if there are, it often occurs in limestone areas with dense karst caves or large-scale underground mining areas

inced earthquake. The earthquake caused by reservoir water storage and oilfield water injection is called inced earthquake. This kind of earthquake only occurs in some specific reservoir area or oil field area

artificial earthquake. The ground vibration caused by underground nuclear explosion and explosive explosion is called artificial earthquake. Artificial earthquake is caused by human activities. Such as instrial blasting, underground nuclear explosion caused by vibration; After high-pressure water injection in deep wells and Impoundment of large reservoirs, earthquakes are sometimes inced e to increased crustal pressure

8. Mine earthquake refers to the earthquake inced by mining. A large area of cavity is formed ring underground mining. Affected by the local tectonic stress, mining and excavation additional stress and the change of earth stress field, a high stress concentration area is formed in the local area. Under certain inced conditions, it is released rapidly and violently, causing strong ground shaking and shaking. Mine earthquake is one of the main environmental problems in mines, and it is also an important cause of ground subsidence. The source of mine earthquake is shallow and the surface wave is rich, which belongs to inced earthquake. The period of mine earthquake is longer than that of natural earthquake, which is related to the propagation of seismic wave in shallow stratum. So far, the largest mine tremor in the world is 5.5.

9. Collapse earthquake: a kind of earthquake. The earthquake caused by rock collapse is called collapse earthquake. It mainly occurs in areas where limestone and other easily soluble rocks are distributed. This is because the easily soluble rock has been eroded by groundwater for a long time and many caves have been formed. The collapse of the cave top caused the earthquake. In addition, the collapse of large rocks on high mountain cliffs or hillsides can also form such earthquakes. In areas where limestone and other easily soluble rocks are distributed, collapse earthquakes often occur.