摘要
矿震是由采矿活动所引起的,产生于某些特定岩体,一定深度受高应力影响的微震。抚顺是我国著名的“煤都”,但由于开采深度的加大,产生的矿震对城市的影响日益严重,并产生了强烈的破坏作用,影响了城区的发展和人们的正常生活。本文在介绍抚顺矿震特征类型基础上,提出了产生矿震的可能潜在条件,借用双岩模式对抚顺煤田矿震成因机理进行了探讨,并借鉴日本Miike煤矿认为矿震可能主要产生于1 140 m以上,煤层中的巷道表面高应力集中地带为矿震发生的主要区域。
Rockbursts are mine-reduced microseismic events which occur in special rocks at great depth under high pressures. Fushun city, known as ＂coal city＂ in China, is affected by rockbursts more and more over time, which brought strong damages and had an influence on people＇s life. In the paper, rockbursts＇characteristics and types in Fushun city are introduced, and then possible potential conditions are analyzed, so that the formation mechanism of rockbursts based on double-rock sample model is discussed, the author considers that rockbursts take place under over 1140m depth and in regions of advance faces in excavations with convergence of high stress in comparison.
出处
《地质灾害与环境保护》
2007年第2期9-14,共6页
Journal of Geological Hazards and Environment Preservation
关键词
矿震
抚顺
双岩模式
成因机理
rockbursts
Fushun city
double-rock sample model
the formation mechanism of rockbursts
