改进垂线法在高速公路下保护煤柱留设中的研究与应用  

Application of Modified Vertical-line Method in Protective Coal-pillar for Expressway

作　　者：谷恺 张召千[1] 仝峰[1] 景康飞 袁博[1] 

机构地区：[1]太原理工大学矿业工程学院,山西太原030024

出　　处：《煤矿开采》2015年第1期75-77,共3页Coal Mining Technology

基　　金：国家自然科学基金(51274145)

摘　　要：以三元煤业1312工作面上覆高速公路为背景,通过对岩层移动角计算,利用改进后的垂线法确定高速公路下合理的保护煤柱尺寸,并通过FLAC3D模拟相应表土层厚度下地表的移动以及上覆岩层的应力情况,以确定高速公路下合理保护煤柱的尺寸。理论计算与数值模拟得出的结果较为接近,通过比较保护煤柱的最终尺寸为245mm。Applying modified vertical-line method,rational width of protective coal-seam for expressway over 1312 mining face of Sanyuan Colliery was obtained by calculating movement angle of rock. Surface movement and stress of overlying strata was simulated with FLAC3 Dso as to determine rational width of protective coal-seam. Theoretical calculation was nearly the same with numerical simulation result,it was finally determined as 245 mm.

关 键 词：垂线法 高速公路 岩层移动角 保护煤柱 数值模拟 

分 类 号：TD823.83[矿业工程—煤矿开采]