The epicenter is the point on the surface directly above the hypocenter 震中:地面上正對(duì)著震源的地方。
English : ganbaku dome is a destroyed building close to the hypocenter in downtown hiroshima where usaf dropped the first atomic bomb ever used in a real war 中文? :原爆圓頂是一棟在美軍投擲原子彈轟炸廣島后殘存下來(lái)的廢墟建筑,由于距離原子彈實(shí)際的爆炸中心非常近,因此被保存作為這起悲劇的紀(jì)念性建筑。
In the case that hypocenter depth is far less than the epicenter distance without depth phases available , only the relative epicenter distribution could be obtained accurately by double difference method , the depth determined would be not stable 當(dāng)震源深度遠(yuǎn)小于震中距時(shí),如果沒(méi)有深度震相的參與,只能得到誤差較小的震中相對(duì)分布,深度的相對(duì)位置仍有較大的誤差。
Based on the fromer study of mine tectonic , hydrology , tunnel deformation , etc . , 3 - d numerical simulation of current tectonic stress field of lvjiatuo coal mine was done in this thesis , combining with local hypocenter mechanism solve and relational stress in - situ measuring value regression analysis has been done to the simulation result , and the reasonable results are gained those will offer dependence for disposing the tunnels more rational and making tunnel supporting more economical and safer 摘要本文在前人對(duì)呂家坨礦進(jìn)行礦井構(gòu)造、水文地質(zhì)、巷道變形等研究的基礎(chǔ)上,結(jié)合該地區(qū)的震源機(jī)制解及有關(guān)的應(yīng)力實(shí)測(cè)值,對(duì)礦區(qū)現(xiàn)今構(gòu)造應(yīng)力場(chǎng)進(jìn)行了三維數(shù)值模擬,并對(duì)模擬結(jié)果進(jìn)行了線性回歸分析,得到了與現(xiàn)實(shí)較為符合的結(jié)論,為更合理的巷道布置和更經(jīng)濟(jì)而安全的巷道支護(hù)提供依據(jù)。