Modern urban ground fissure disaster is a kind of environmental
geological disaster related to human engineering activities.
Its frequency and intensity are the result of both internal and
external dynamic geological action and human engineering activities.
The blindness and unscientific nature of human engineering
activities shorten the cycle of ground fissures and increase
the scale of ground fissures. Therefore, in order to reduce and
alleviate the disaster scale and degree of ground fissures, it
is necessary to analyze the occurrence and development reasons
of ground fissures, and to scientifically plan the development
and construction of cities in order to realize regional
Although it is difficult for human beings to control the ground
fissure activity caused by internal dynamic geological action,
effective measures can be taken to minimize the loss. That is to say,
when making urban development planning and designing major engineering
facilities, consideration should be given to rationally avoiding or
adopting necessary engineering countermeasures in sensitive areas of
ground fissures in order to prevent or mitigate the disasters of ground
fissures. In order to ensure the safety of the new building in the
effective life cycle, it is necessary to avoid a certain distance from
the main ground crack, and the width of the shelter belt should be
determined according to the concrete conditions. The urban lifeline
project is a continuum, which can not be used as the way of avoiding
the building. The strength of the pipeline should be increased appropriately,
and flexible connections such as rubber should be adopted at the joint,
so that the pipeline can absorb its shape in a longer time and variable
to enhance the safety of the pipeline itself.
Groundwater over-exploitation is an important inducing factor of urban
ground fissure activity, especially the blind concentration and intensive
exploitation of the water source, which leads to the deep drop of the
central water level of the groundwater drop funnel and the extremely
uneven consolidation and compression of the aquifer group. A higher
deformation gradient is formed at the edge of the consolidation
settlement area, which increases the deformation range of the
ground fissure on the surface. Therefore, it is necessary to
reasonably control the mining intensity of existing water sources,
and at the same time, to consider opening up new water sources in
order to slow down the gradient of ground subsidence deformation,
which plays an important role in reducing the activity of ground
Attention should be paid to the long-term monitoring of ground
fissures. Through the long-term accumulation of observational
data, the temporal and spatial characteristics of ground fissures
activities should be understood in order to further analyze their
causes and provide a reliable basis for the disaster mitigation
and prevention of urban ground fissures.
As a kind of existing geological phenomenon, ground fissures
must have certain influence on the surrounding natural geography
and hydrogeological environment.
Where the ground cracks pass, the ground surface is broken,
the building is cracked, the road is deformed, the groundwater
pipeline is broken, and all kinds of facilities on the ground
are destroyed. The long-term activities of the ground fissures
have caused huge losses to human beings. Therefore, it is necessary
to study and propose correspondingly in time. Control measures.
At present, people mainly adopt the method of avoiding ground fissures.
They try to avoid the ground fissures during urban construction,
stay away from the severe disaster areas, and divide the impact zones
in the fissure development areas as a guide for urban planning and