Coal mine goaf caused geological disasters to which department

1. Collapse and landslide. The collapse and landslide caused by gold mining is one of the common sudden geological disasters in mines. The high and steep slope caused by mining, the formation of suspended dangerous rock mass and mountain cracking, etc., especially in the use of caving method mining, improper rainstorm, prone to mountain collapse and other clear conditions, mainly divided into rock collapse and soil collapse.

2. Ground subsidence and ground fissures. Ground subsidence caused by gold mining is also known as mined-out subsidence. The causes of mining subsidence are complex, and are affected by many factors, such as the morphology of the ore body, the ratio of buried depth to mining thickness in the goaf, the geological structure of the surrounding rock of the gold mine, the geological structure of the mining area, and the condition of groundwater.

3. Debris flow. Debris flow is in the valley, by heavy rain, ice and snow meltwater and other special torrents containing a large number of sediment and stones, in the mining of resources, due to the destruction of vegetation and rocks on the mountain, especially in the rainstorm weather through the transport of water, will form rainfall debris flow, the occurrence of this debris flow also has its own characteristics, generally composed of stones, gravel and clay, the occurrence and hidden dangers of China's mine debris flow are mainly related to the waste rock pile in the mining more, poor blocking measures, loose structure and so on.

4. Collapse of goaf. The phenomenon of goaf collapse mainly occurs in the underground mine area mined by the empty field method and caving method, and the collapse occurs naturally after forming a certain scale, once it cannot be prevented and treated in a timely and effective manner, it will induce serious accident hazards, and even in the rock movement near the surface, it threatens the quality and safety of the surface construction and the use of the road, and can further cause large-scale landslides in serious cases. Once a certain goaf scale is reached, without timely and effective filling, it can easily lead to collapse disasters, which is more common in the mining of metal ores.

Geological hazards in surface mines.

There are mainly ground subsidence, land subsidence, ground fissures, landslides, collapses, debris flows, coal spontaneous combustion, etc., and geological disasters in underground mines.

There are mainly roof rising, sheet gang, water inrush, mud inrush, underground heat damage, mine earthquake, rockburst, underground coal spontaneous combustion, oil and gas well casing damage, mine water pollution, etc. Mine geological disasters in the narrow sense refer to geological disasters that occur underground.

Among all kinds of mines, coal mines are the most serious, and there are many types of geological disasters in their mines, with high frequency and wide distribution, and the largest damage loss. In addition to coal mines, iron ore, copper ore, lead-zinc ore and other metal ores and some non-metallic mines also have different degrees of mine geological disasters. Mining of radioactive minerals, as well as radiological disasters. Hope to adopt.

This is broadly defined as a geological hazard. In fact, it is more serious than this, and it is a major safety hazard.

If the building is indeed above the goaf of the coal mine, then the coal mine is illegal, because coal mining is prohibited under the construction facility, and there must be enough coal pillars.

Your dilapidated houses must be moved out, and the coal mine must be given resettlement money and relocation expenses.

Please collect evidence, take photos or videos, compile this matter into a written report, and submit it to the local land, coal, and safety supervision departments, as well as the local government, and pay close attention to the implementation of this matter, and instruct the coal mine to be responsible for the relocation of villagers within the geological disaster area. Otherwise, one day it will be a smashing house and a collapse of the house, then the consequences will be catastrophic.

Mine geological disasters, also known as mine geological disasters, mining geological disasters, mining geological disasters, etc., refer to the disasters that endanger the safety of human life and property, damage mining engineering equipment and mining resources and environment, and affect mining production due to the destruction of a large number of mining shafts and roadways and the deformation of rock and soil bodies, as well as serious changes in the geology, hydrogeological conditions and natural environment of mining areas.

Prevention and control methods: 1) Establish and improve the risk assessment and environmental assessment before mining, and formulate policies, regulations and planning systems for environmental protection and restoration. Strict assessment before mining, active prevention during production, active recovery after mining, and the restoration of the mine geological environment and land restoration into laws and regulations and mandatory implementation.

2) Strengthen publicity, popularize the knowledge of mine geological disaster prevention and control, improve the quality of mine mining personnel, and enhance their sense of crisis and vigilance against geological disasters. Improve the skills and means of disaster prevention and mitigation for all employees in the process of mine production, and strengthen the training of mine geological disaster prevention, risk avoidance and rescue.

3) Develop and apply advanced informatization, geophysical exploration methods and geochemical exploration methods, closely monitor mine geology (Weihai crystallization), implement real-time monitoring and dynamic monitoring of potential disasters that may occur, establish a mine geological disaster monitoring system, realize the dynamic tracking and management system of mine geology and environmental ecology, and avoid major personnel and property losses.

4) Strengthen the design of pit and mine slope, carry out slope monitoring, strengthen the retaining wall to stabilize the geological structure of the slope, and if there is cracking and deformation after excavation, do geological survey in time and take preventive measures. Rational construction of tailings dams, the formation of stable mines and tailings ponds, reduce the risk of landslides and landslides.

Geological disasters caused by mining can be broadly divided into two types: environmental damage and landslides.

1.Environmental damage due to mining. The environmental damage caused by mining mainly includes:

The accumulation of gangue, the collapse of the land, the destruction of vegetation and the pollution of the atmosphere. In the process of development and construction, the mining area will cause serious damage to the land, especially the mining of deep minerals will lead to serious subsidence of the ground.

2.Geological landslides due to mining. In addition to soil erosion caused by the destruction of vegetation and long-term soaking of rainwater, mining is also an important cause of damage to soil structure.

The geological landslide caused by mining has the characteristics of sudden eruption and the severity of the consequences, and it poses a major threat to industry and agriculture, local transportation, and the safety of residents' lives and property.

It refers to the cavity or cavity left after the mining of underground coal or coal gangue in the process of coal mine operation. In the process of coal mining, the goaf often brings harm to the normal production of the coal mine. Due to the existence of a large amount of floating coal in the goaf in the process of coal mining, the existence of floating coal provides material conditions for spontaneous combustion of coal mines.

Spontaneous combustion in coal mines seriously threatens the safe production of coal mines and restricts the production of coal mines, and spontaneous combustion in coal mines in mined-out areas occupies an important part of the overall spontaneous combustion in coal mines. Among China's key state-owned coal mines, spontaneous combustion in goaf coal mines accounts for 60% of spontaneous combustion fires, and most of these fires are caused by air leakage. Relevant data show that the spontaneous combustion in the goaf is divided into "three zones", namely the cooling zone, the oxidation zone and the suffocation zone.

Strengthen the prevention of spontaneous combustion in goafs, and effectively control the occurrence of coal mine fires.

Usually after the completion of the coal mining operation will be left in the coal mine goaf, if it is necessary to continue to mine to the depth of Kaichang bend, the goaf will generally be moderately strengthened as soon as possible, and protective measures such as anchor fixing and wooden pile support will be adopted, so that the coal mine goaf will not collapse in a short time. If the goaf of the coal mine is no longer reinforced and backfilled, it will become a collapse when the sparrow grows, causing the ground to subside, forming a collapse pit on the surface and forming stagnant water. As a result, farmland cannot be cultivated.

Due to the hail grip in the coal mining process, the underground coal resources need to be mined and transported away, generally in the process of excavation, the method of crossing the mountain tunnel on the similar road is adopted, and the tunnel between the location of the coal is located and the coal mine mouth is gradually opened up, and the ore and coal encountered in the mining process are generally transported to the surface, so as to form a reasonable transportation and mining operation surface, with the continuous transportation of coal and other ores, the underground has formed such a coal goaf.