摘要
本文在分析了现有矿间防水煤柱留设方法存在问题的基础上，把煤柱划分为极限平衡区和弹性核两部分，提出应按弹性核留设防水煤柱。根据煤柱破坏机理，本文把透水划分为顶板爬水、煤柱整体推移、应力超限和渗流速度超限引起煤柱破坏四种类型，矿间防水煤柱的合理尺寸应按各种破坏形式临界尺寸的最大值并考虑一定的安全系数留设。
Analysing the shortcomings of the current method,this paper divedes water barrierinto two parts,i.e.the plastic zone at both the edges and the elastic zone in the center. Efficiency loss of water barrier has four possible forms in the light of the mechanism of its damage:inrush of water through roof,whole movement under the action of water pressure,barrierdamage for overstress or a large seepage velocity.Thus,the authors propose that the rationalsize of water barrier should be determined by taking the maximum among the critical wides ofthe four forms and considering a certain safety coefficient.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
1995年第1期52-57,共6页
Journal of China University of Mining & Technology
