[0003] (1) There are many monitoring systems for various types of urban underground infrastructure, each planned separately, and the coherence is not strong. Data intercommunication between systems is impossible, data reversal process is blocked, and
information sharing cannot be carried out. The phenomenon of "data islands" is becoming more and more serious
[0004] (2) The state monitoring of urban underground infrastructure mainly adopts wired methods, which requires large manpower investment and high monitoring costs. It is urgent to build a
wireless heterogeneous fusion network system for complex underground environments
[0005] (3) The types and dimensions of existing
monitoring data such as fire, equipment failure, and civil structure failure are single, forming information islands, and the
time domain, space domain,
object domain, and event domain of data are separated, and there is a lack of multi-dimensional spatio-temporal
big data processing models
[0006] (4) Urban underground infrastructure faces a series of emergency problems such as complex emergency environment, few exits, limited space, few evacuation paths, and relatively weak
information management. At the same time, multi-disaster
emergency response involves multi-department coordinated command and multi-type emergency
resource allocation. Basically rely on human command and decision-making, which is very difficult, and has not yet realized the transformation from passive acceptance to active response, and there is a shortcoming of emergency intelligent comprehensive decision-making command
[0007] (5) There is still a large gap between the existing
monitoring system platform and the goal of holographic
perception group construction, mainly reflected in the incomplete collection of
perception, imprecise state capture, inconsistent networking methods, unrelated perception systems, and non-sharing of perception data, etc. question
At the same time, there is a lack of an integrated comprehensive management platform for real-time monitoring, trend deduction, and status evaluation and analysis of the operating status of underground infrastructure
[0008] (6) my country's urban underground infrastructure
safety risk prevention and control is facing many problems, such as weak joint monitoring capabilities for various faults and disasters, fragmented monitoring systems, and lack of unified management; integrated solutions for design, construction, and operation and maintenance are stuck. At the stage of scientific research, no practical application demonstration has been formed; at present, it has not been possible to formulate a complete set of comprehensive solutions from the perspective of integration of design, construction, operation and maintenance, and move towards industrialization
[0009] To sum up, at present, the basic theories of underground infrastructure disaster
mechanism analysis, disaster risk prediction, and multi-
hazard coupling are not perfect, especially the lack of quantitative method support for risk decision-making, and the lack of
vulnerability analysis of key nodes; in the state of underground infrastructure In terms of online monitoring technology, most of them are experimental studies, which are not scientific and systematic enough to realize long-term, long-distance, multi-dimensional and multi-parameter comprehensive monitoring
In terms of mobile inspections of underground infrastructure, regular manual inspections are mostly used, and the scope of inspections is not comprehensive, the efficiency is low, and it is easy to misjudge
However, the existing
machine dynamic inspection equipment equipped with sensors has large detection errors due to multi-
source data time out of
sync.
To sum up, in terms of intelligent diagnosis and decision-making, there is a lack of a disaster classification and
early warning system supported by effective data.