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综放沿空掘巷围岩大、小结构的稳定性原理
引用本文:侯朝炯,李学华.综放沿空掘巷围岩大、小结构的稳定性原理[J].煤炭学报,2001,26(1):1-7.
作者姓名:侯朝炯  李学华
作者单位:中国矿业大学 能源科学与工程学院,
基金项目:国家自然科学基金资助项目! (5 973 4 0 90 )
摘    要:针对综放沿空掘巷围岩的特点,提出了综放沿空掘巷岩大、小结构的稳定性原理,为锚杆支护的成功应用提供了理论依据。对中老顶中的弧三角形关键块的受力特点、在掘巷期间和回采影响期间的稳定情况以及对其下的沿空掘巷的影响进行了分析。探讨了影响围岩小结构稳定性的主要因素;应用巷道锚杆支护围岩强度强化理论,研究了提高锚杆预紧力和支护强度对保持围岩小结构稳定性的重要意义。

关 键 词:沿空掘巷  围岩大结构  围岩小结构  围岩强度  综放工作面  稳定性  锚杆支护
文章编号:0253-9993(2001)01-0001-07
修稿时间:2000年8月28日

Stability principle of big and small structures of rock surrounding roadwaydriven along goaf in fully mechanized top coal caving face
HOU Chao-jiong,LI Xue-hua.Stability principle of big and small structures of rock surrounding roadwaydriven along goaf in fully mechanized top coal caving face[J].Journal of China Coal Society,2001,26(1):1-7.
Authors:HOU Chao-jiong  LI Xue-hua
Abstract:Based on the characteristics of rock surrounding roadway driven along goaf in fully mechanized top coal caving face, the stability principle of big and small structures is put forward, which provides a theory basis to the application of bolting. The mechanical characteristics of arc triangle key block in main roof and the stability of roadway in the periods of drivage and extraction and the effect on the roadway driven along the next goaf are analyzed. The main factors which affect the stability of small structure of surrounding are discussed. The bolting surrounding strength reforcement theory is applied to study the important significance of improving the pretension of bolting and the support strength.
Keywords:gob  side entry driving  big structure of surrounding  small structure of surrounding  key block  surrounding strength reforcement
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