采矿与安全工程学报2011，Vol.28Issue(2)：267-272,6.
高压线铁塔下放顶煤开采及其安全性研究
Study of Coal Caving Mining Under the Steel Tower of High-Voltage Transmission Line and Its Safety
摘要
Abstract
In order to exploit the coal under the steel tower ot high-voltage transmision line and ensure the safety of the tower, we studied the safety of such tower affected by caving mining, based on the data of field observation and surface movement and deformation predicting, from the following aspects: uneven subsidence of the tower foundations, slope of the tower, torsion, space between tower foundations and subsidence velocity of the tower.The results indicate that the uneven subsidence of the tower foundations and the tower slope exceed the band four damage criterion of common structures.The surface deformation of which the tower can resist is greater than that of common structures.The results also demonstrate that the surface subsidence velocity of the tower centre decreases with the increase of the distance between thetower and face line in a logarithm relationship.The high-voltage transmission lines have a restriction effect on the tower deformation and synergy deformation with the tower.The slope of the tower structure is different from the top to bottom during undermining and the tower structure is obviously curved.These results have been used to guide the mining practice under the higlvoltage transmission line tower.The tower runs well and is quite safe during the mining activity.关键词
放顶煤开采/高压线铁塔/安全性/地表移动变形/协同变形Key words
top coal caving mining/ high-voltage transmission line tower/ safety/ surface movement and deformation/ synergy deformation分类
矿业与冶金引用本文复制引用
郭文兵,郑彬..高压线铁塔下放顶煤开采及其安全性研究[J].采矿与安全工程学报,2011,28(2):267-272,6.基金项目
国家自然科学基金项目(50974053) （50974053）
国家重点基础研究发展计划(973)项目(2009CB226107) （973）
