Chang Kun Railway Shang Zhi Chang Section Of The Underground Mined-out Area Characteristics And Engineering Effect Study

In recent years, with the continuous development of the national economy growth, traffic gradually become a bottleneck in the further development of national economy. The national twelve plan, put forward clearly to build" four vertical five horizontal radiation"" m" shaped railway network system, in this context, the domestic set off a wave of construction of railroad of climax. In Railway Surveying and design, for goaf border and determination of the impact range, the goaf roof deformation and foundation stability evaluation, mined-out area treatment technology scheme will affect the whole scheme selection, optimization and project investment estimation. Railway Engineering for goaf treatment to avoid mainly, through unexplored areas should also keep a certain width safety pillar, so it can guarantee the safe operation of the railway, is the first choice of Railway Survey and design. But in the development of mineral resources is very broad provinces in railway survey line selection is often unavoidable in goaf influence. Therefore, the correct evaluation of goaf on Railway influences the stability of mined-out area, according to the characteristics of processing mode of railway transportation in China, the development has the profound significance.This article first through the use of on-site survey, drilling, measurement, data collection by means of capturing the scene actual situation, and accordingly the mined-out area classification and partition, then according to the coal sector and railway sector goaf the relevant norms of various zones of the goaf were calculated, the obtained goaf deformation data, so that the various zones of the steady state. And then draw lines safety through the scope.Through calculation, reached on paper mill and mill mined-out area is too large deflection, recommended bypassing through small goaf area, to form bridges through small goaf area, and the bridge pile into goaf bottom the following conclusions. To achieve the minimum cost, ensuring the safety of railway operation purpose.This paper systematically summarizes the railway passing through goaf is commonly used to assess the method and step of engineering construction, especially the railway construction has a certain reference value.