Study on the characteristics of ground pressure behaviors in working face with great mining height at different advance speeds by similarity model experiment

• 来源期刊: 煤炭学报（英文版）
• 年，卷（期）: 2007,（1）
• 页码范围: 28-31
• 页数: 4页
• 语种: 英文

摘要

Presently most of research results on strata behaviors were concluded under the normaI(moderate)advance rate conditions.Comparing with normal advance rate.fast advance rate and slow advance rate may cause some new changes of strata behaviors.The characteristics of ground pressure behaviors in working face with great mining height at different forward speeds were studied by similarity modeI experiment in laboratory.Its conclusion provides a theoretic basis for ground pressure controlling.