The structure of the power tunnel is unique as a special place. It is built under the surface of the earth crust,belongs to half-hidden project. In recent years, affected by operating life, geological conditions, design and construction, the number of the tunnels which has structural safety risks apears more and more, so the safety of the tunnel structure always has been a very important issue of construction, operation and maintenance. This paper presents a tunnel structure safety monitoring system based on BOTDA technology.This system has good adaptability to the scene, and can remotely monitor the structural safety of the tunnel in real time, and it also has advantages of distribution, long-distance, high-precision, etc.
On account of the ambiguity of the concept of eco-environmental quality and the incompatibility of evaluation, the paper takes regional eco-system as "Natural - Economic - Social" complex, with the using of Matter-element Analysis Method, selects the 2012 statistics data source of the study area, gives an effective eco-environmental evaluation of the hilly areas in Pingdingshan city by the calculating of Euclid approach degree. The evaluation results show: Euclid approach degree ρHj (City center) >ρHj (Lushan) >ρHj (Ruzhou) >ρHj (Baofeng), while the number is between 2 and 3. It showed that the eco-environment quality in Pingdingshan hilly areas is good, waiting for further improvement. It offers the scientific basis and countermeasures for the restoration and further development of the eco-environment in this area.
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