Railway line safety management method during mine station unloading excavated coal

Abstract

The present invention relates to a safety control method of railway line and station of mining area in the coal-mining period. It is characterized by that it includes line control and switch control, and said method includes the following steps: first, broadening railroad bed, for line and switch prelifting track according to the slope of 2 per mille, in the subsidence range of mining area uniformly mounting track space rods and anticreep supports, so that the various movement deformations of railway can be controlled in the safety range so as to ensure the running safety.

Description

technical field [0001] This application belongs to the line control method to ensure the safe transportation of railways during the control period of the "three downs" coal mining subsidence area. Background technique [0002] "Three under" (under the railway, under the village buildings, under the water body) coal mining technology has been studied very early. Due to the limitation of construction technology, coal mining under the railway has not been widely promoted. In the past ten years, my country's Yanzhou mining area and Zaozhuang mining area have started the exploration and practice of coal mining under the railway, and realized safe transportation in the process of railway subsidence control in single-track intervals. However, the coal mining problem under the railway station in the mining area has not been resolved, mainly due to: [0003] 1. During the subsidence of the railway station in the mining area, the turnout will slowly deform with the movement of the gr...

AI Technical Summary

Problems solved by technology

[0003] 1. During the subsidence of the railway station in the mining area, the turnout will slowly deform with the movement of the ground surface. The deformation mainly includes horizontal and vertical movement. In addition, the industry characteristics of the unbalanced empty and heavy traffic flow unique to the coal mine railway accelerate the speed of the turnout. The crawling of the turnout caused the track gaps in the turnout group area and the back of the turnout to be too large. Due to the dense number of turnouts in the turnout group area and the complex structure of the turnout, the turnout could not be reset in time, resulting in continuous blind seams in front of the turnout and excessively large track gaps behind the turnout, which endangered the driving safety.

[0004] 2. The railway line needs to be raised and moved according to the daily subsidence conditions. Therefore, the subgrade and track bed under the turnout are always in an unstable state. Due to the complex structure of the turnout, the level, height and gauge of each part have strict regulations. It is stipulated that the tamping must be dense, and the railway is still affected by the subsidence at night and will move and deform, but on-site monitoring is difficult to achieve, and it is easy to have high and low levels and gauge overruns, which will affect driving safety.

[0005] 3. The railway subsidence of each mining face generally lasts for 2-3 months. The line will be lifted along with the subsidence of the ground surface, and the roadbed of the railway will also be continuously widened and heightened. For example, according to the general layering The construction method is very difficult, and the compactness of the subgrade cannot meet the specified requirements, which also directly affects the driving safety.