冒落带是指工作面回采后引起的煤层上覆岩体完全垮落的那部分岩层。该层岩石具有不规则性、碎胀性和密实度差的特征,是影响顶板再生和冒落岩块不能隔水的重要原因。
The range of the tensile stress zone increases with the increase of the ratio between the height of the caving zone and periodic weighting step, with the increase of the ratio between the horizontal tectonic stress and vertical stress.
拉应力范围随冒落带高度与周期来压步距的比值的增大而增大,随水平构造应力与垂直应力的比值的增大而增大。
参考来源 - 构造应力场影响下的巷道围岩稳定性原理及其控制研究·2,447,543篇论文数据,部分数据来源于NoteExpress
根据经验公式,计算了各部位煤洞采空区的冒落带及裂隙带高度。
According to the experiential formula, the caving-in zones and fracturing zones of the coal cave mined out area have been calculated.
高位钻孔抽放最主要的影响因素是合理层位选择,其钻孔参数应根据采空区冒落带及裂隙带高度来设计。
The reasonable layer selection is the main influencing factors for gas drainage by high level borehole, the borehole parameters is based on the caving & fracture zone height of gob.
详细介绍了采用埋管注浆方法充填加固冒落段巷道顶板及围岩,使之胶结成为整体,从而安全顺利地通过该冒落带的施工技术。
Describes the methods of reinforcing roof of the plank and surrounding rock by using pipe-burying filling, to mak them as a whole, so as to go-through the caving zone safely and smoothly.
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