拉森斯(Russenses)岩爆判据研究

Russenses岩爆判据是岩爆分析常用判据,为求出该判据中环向应力,先导出了krisch方程,借助于岩石应力状态分析,对岩体在不同的水平和垂直应力作用下发生岩爆的影响深度进行研究.结果表明,随着水平构造应力较垂直应力的增加,岩爆影响深度逐渐减少,垂直应力对岩爆影响显著.对Russeness岩爆判据进行推广,建立了用洞室埋深来表示的岩爆判据,得到了发生岩爆的临界埋深公式.该公式反映出岩性对岩爆的影响,验证了岩爆发生条件是高地应力和岩石脆弹性的论断.

Study on Russenses rock burst principle

Rus senses rockburst principle is an important principle, It is often used by engineers . In order to get the circle stress of tunnel for the principle , we calculate the equation of Krisch . By means of the stress state analyses on the rock mass surrounding openings , we studied the stress state of rockburst and the effective depth of rockburst . Research was found that Rock-burst's effective depth is with the aggrandizement of the specific level ground value but reduced . If Russense rockburst priciple is expanded with tunnel's depth, we can get the rockburst critical depth formula. The formula shows that the rock's character have some influence on the rockburst. The conclusion that rock's high earth stress and crisp elasticity lead to rockburst is also proved by the formula.