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Study on Stability and Timeliness of Slope Under Open-underground Combined Mining
Author(s): 
Pages: 258-261,265
Year: Issue:  8
Journal: Safety in Coal Mines

Keyword:  露井协采相似模拟实验稳定性时效性稳定蠕变边坡;
Abstract: 露井协采的采掘方式是解决当下能源需求急剧增加的必然要求,但在露井协采下边坡的稳定性又是制约资源采出的必要因素,因此采用相似模拟实验对安太堡矿在露井协采下边坡的稳定性和时效性进行研究,重现露井协采中边坡的变形特征及变形方式.研究结果表明:露天开采下边坡不存在大的变形破坏,最大位移0.75 mm(0.15 m);井采条件下,随着工作面推进的加剧边坡出现明显的沉降现象,最大的沉降值为8.9 mm(1.78 m);在露天开采过后随着时间的变化,边坡变形破坏基本遵循稳定蠕变状态,最大的变形值为0.97 mm(0.194 m),在井采达到采掘临界线以后,随着时间的变化,边坡沉降值是不同的,最大的沉降值为0.64 mm(0.128 m).
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