Study On Stability Of Largeness Goaf Under The Railway Building By Longshan Power Plant In Hebei

This thesis which relys on the largeness mined-out area under the railway building which design with the construction by China Railway Eryuan Engineering Group Co. Ltd., deploys the research of the stability of the largeness mined-out area. Passing the actually measure to obtain the distortion growth instance of the largeness mined-out area. Drilling a hole to the sampling data, pass indoor experiment to measure sample physical parameter, and follow the fabric size of the largeness mined-out area, building up the computes model to use a limited numerical methods analysis the stability of largeness goaf, and pass to change different factor to beg influence of the earth's surface on the largeness mined-out area to find the break form and process of the round rock. Using the mathematics covariance method to get a different factor function under of various transform curve. Passing the result we can evaluate the largeness mined-out area's influence for the stability of the earth's surface. Then anasysed the effective factors and the effect mechanism detailedly. finally passing the analysis , we find the largeness mined-out area is labilization. The research can contribute to design and construct underground engineering, and can be a reference to evaluate stability of masses in related fields.