断裂应力场模拟分析与应用
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摘要
采用岩石破坏过程分析系统 (RFPA2D) ,通过对断裂应力场数值模拟分析 ,表明构造应力场条件下含断裂岩体的声发射的能量最大值和累计值都远大于重力场 ,说明构造应力场条件下岩体应力大大高于重力场 .通过对北票矿区浅源地震的分析 ,认为现今构造应力场和断裂对矿震等地质动力灾害的发生起控制作用 .一般说来 ,断裂的活动性及应力场性质不同 ,地质动力灾害发生的强度和频度也不同 .图 4,表 2 ,参 6 .
By means of rock failure process analysis system and the quantificational simulation analysis of faults stress field, the results indicate that under the condition of tectonic field the maximum value and accumulated value of the acoustic emission energy of the rock including faults is much higher than that under the gravity field, which also indicate that rock mass stress under condition of tectonic field is much higher than under gravity field. According to the analysis of shallow earthquake in Beipiao mining area, the author conclude that modern tectonic stress field plays dominant role in occurrence of geo-dynamic disaster.Feature of stress field is different, the occurrence intensity and frequency of geo-dynamic disaster is different.4figs.,2tabs.,6refs.
By means of rock failure process analysis system and the quantificational simulation analysis of faults stress field, the results indicate that under the condition of tectonic field the maximum value and accumulated value of the acoustic emission energy of the rock including faults is much higher than that under the gravity field, which also indicate that rock mass stress under condition of tectonic field is much higher than under gravity field. According to the analysis of shallow earthquake in Beipiao mining area, the author conclude that modern tectonic stress field plays dominant role in occurrence of geo-dynamic disaster.Feature of stress field is different, the occurrence intensity and frequency of geo-dynamic disaster is different.4figs.,2tabs.,6refs.
引文
[1] 陈庆宣,王维襄,孙 叶,等,岩石力学与构造应力场分析[M ].北京:地质出版社,1998.
[2] ANDERSONEM .TheDynamicsofFaultingandDykeFormationWithApplicationtoBritain[M].Edinburgh:Olivel&Loyd,1942.
[3] SHENB ,STEPHANSSONO ,EINSTERNHH ,etal.Coales cenceoffracturesundershearstressesinexperiments[J].JGeophysRes,1995,100(B4):59755990.
[4] HORRIH ,NETMATNS.Compression inducedmicrocrackgrowthinbrittlesolid:axialsplittingandshearfailure[J].JGeophysRes,1985,90:31053125.
[5] 陈彭年,陈宏德,高莉青.世界原岩应力实测资料汇编[M].北京:地震出版社.1990.
[6] 张宏伟,马翼飞,段克信.构造应力与矿区地震[J].辽宁工程技术大学学报,1998,17(1):16.
[2] ANDERSONEM .TheDynamicsofFaultingandDykeFormationWithApplicationtoBritain[M].Edinburgh:Olivel&Loyd,1942.
[3] SHENB ,STEPHANSSONO ,EINSTERNHH ,etal.Coales cenceoffracturesundershearstressesinexperiments[J].JGeophysRes,1995,100(B4):59755990.
[4] HORRIH ,NETMATNS.Compression inducedmicrocrackgrowthinbrittlesolid:axialsplittingandshearfailure[J].JGeophysRes,1985,90:31053125.
[5] 陈彭年,陈宏德,高莉青.世界原岩应力实测资料汇编[M].北京:地震出版社.1990.
[6] 张宏伟,马翼飞,段克信.构造应力与矿区地震[J].辽宁工程技术大学学报,1998,17(1):16.
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