Research on countermeasure of constant resistance and large deformation coupling support of return air course soft rock roadway in Xin'an coal mine

被引：0
作者：
机构：
[1] State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing
[2] School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing
来源：
Sun, Xiaoming (xiaoming_s@263.net) | 1600年 / Academia Sinica卷 / 33期
关键词：
Constant resistance and large deformation; Deformation mechanism; Deformational mechanical mechanism; Mining engineering; Numerical simulation; Soft rock roadway;
D O I：
10.13722/j.cnki.jrme.2014.s2.091
中图分类号：
学科分类号：
摘要：
To solve the destruction phenomena of non-linearity large deformation in the +535 m return air course soft rock roadway of Xin'an coal mine, such as serious floor heave, side wall shrinking and roof sinking, situ engineering geomechanics analysis, indoor physical mechanic property research and three-dimensional numerical simulation were adopted. And a thorough study involving the deformation failure mechanism of the return air course soft rock roadway of Xin'an coal mine was developed. The type of deformation mechanism of this soft rock roadway was confirmed and transferred successfully. The support form of constant resistance and large deformation bolt + metal net + floor anchor pipe + steel fiber reinforced concrete was proposed and used in practice successfully in Xin'an coal mine. Practice was proved that the coupling technology based on constant resistance and large deformation bolt could effectively transfer the deformation mechanism, absorb the deformation energy accumulated in surrounding rock, cut off the plastic sliding force of floor heave and ensure the total safety of the roadway. ©, 2014, Academia Sinica. All right reserved.
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页码：4129 / 4138
页数：9
相关论文
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