大断面交岔点顶板变形与加固控制技术研究  

Study of Reinforcement Control Technology and Roof Deformation of Oblique Cross with Large Section

作　　者：黄乃斌[1] 孔德惠[1] 

机构地区：[1]淮南矿业(集团)有限责任公司张集煤矿,安徽淮南232001

出　　处：《采矿与安全工程学报》2006年第2期249-252,共4页Journal of Mining & Safety Engineering

摘　　要：针对交岔点断面大,厚复合顶板,顶板淋水大等实际情况,模拟分析了交岔点巷道围岩变形及应力分布特征,得到在交岔点顶板受较大的水平应力,在交岔点岩柱上垂直应力最大.提出对交岔点顶板采用化学加固封堵顶板水和锚索补强支护,能充分发挥锚岩支护体的整体承载能力.工程应用表明,对交岔点顶板采用化学加固和锚索补强支护后,有效地控制了交岔点围岩变形,取得了较好的技术效果.Aimed at the fact of large section, thick complex roof and serious water leakage in oblique crossing, the surrounding rock deformation and the stress distribution are analyzed by numerical simulation. The results indicate that the maximal horizontal stress lies in the roof while the maximal vertical stress is in rock pillar of the oblique crossing. The chemical consolidation technique and cable supplement support are adopted in the crossing roof to improve the bearing capacity of the whole bolt-rock support body. The engineering application shows that the surrounding rock displacement is effectively controlled and a good technique effect is obtained by using the chemical consolidation technique and cable supplement supports.

关 键 词：大断面交岔点 顶板变形 化学注浆加固 锚索补强 

分 类 号：TD353[矿业工程—矿井建设]