地震学报
地震學報
지진학보
ACTA SEISMOLOGICA SINICA
2010年
2期
234-241
,共8页
地下爆炸%地震耦合效应%准静态%折合位移势
地下爆炸%地震耦閤效應%準靜態%摺閤位移勢
지하폭작%지진우합효응%준정태%절합위이세
underground explosion%seismic coupling%quasi-static%reduced displacement potential
首先修正了地下爆炸地震耦合效应的准静态理论, 然后利用改进之后的理论对剪切模量、材料强度、 围压以及孔隙率不同的介质中地下爆炸的震源强度进行了分析. 分析结果表明, 对于密实硬岩介质来说, 在其它条件不变的情况下, 介质的剪切模量越大, 震源强度越低; 介质的强度越大, 震源强度越低; 震源强度随着埋深的增加而降低. 而干燥多孔介质中的干孔隙率也对震源强度有重要影响.
首先脩正瞭地下爆炸地震耦閤效應的準靜態理論, 然後利用改進之後的理論對剪切模量、材料彊度、 圍壓以及孔隙率不同的介質中地下爆炸的震源彊度進行瞭分析. 分析結果錶明, 對于密實硬巖介質來說, 在其它條件不變的情況下, 介質的剪切模量越大, 震源彊度越低; 介質的彊度越大, 震源彊度越低; 震源彊度隨著埋深的增加而降低. 而榦燥多孔介質中的榦孔隙率也對震源彊度有重要影響.
수선수정료지하폭작지진우합효응적준정태이론, 연후이용개진지후적이론대전절모량、재료강도、 위압이급공극솔불동적개질중지하폭작적진원강도진행료분석. 분석결과표명, 대우밀실경암개질래설, 재기타조건불변적정황하, 개질적전절모량월대, 진원강도월저; 개질적강도월대, 진원강도월저; 진원강도수착매심적증가이강저. 이간조다공개질중적간공극솔야대진원강도유중요영향.
By introducing the effect of pore crush, the quasi-static theory on seismic coupling of underground explosions has been modified. The influence of shear modulus, material strength, overburden pressure and porosity on explosive energy coupling is studied. The results indicate that, for close-grained hard rock, the explosive energy coupling decreases with the increase of shear modulus, material strength and overburden pressure, provided other conditions remain unchanged. And for dry porous medium, the explosive energy coupling is influenced by dry porosity.
