1) megaseisms
强地伟震
2) megaseism
['meɡə,saizm]
伟震
3) strong earthquake
强地震
1.
Anisotropic changes in apparent resistivity associated with strong earthquakes;
与强地震有关的视电阻率各向异性变化
2.
The paper analyses the nonlinear response of space truss subjected to strong earthquake and its failure mechanism using computer program,indicating the space truss is characterized the brittle failure and drawing some conclusions useful for engineering practice.
分析了平板网架在强地震作用下的非线性反应,对网架的破坏机理进行探索,编制程序进行算例分析,得出了平板网架在强地震作用下趋于脆性破坏的特点,从而得出了一些对实践有益的结论。
3.
By analyzing the relationship between ground water behavior and strong seismic activity during the past more than 20 years in North China, we have found similar water level descending variation of a part of wells in the short-term stage before several strong earthquakes.
分析华北地区 2 0余年地下水动态与强地震活动的关系 ,发现部分井水位动态在几次强地震前短期阶段出现形态相似的下降变化 。
4) strong ground motion
强地震动
1.
Physical simulation study on dynamic failures of layerad rock masses under strong ground motion;
强地震动作用下层状岩体破坏的物理模拟研究
2.
To study the characteristics of inelastic response spectra,an attenuation relationship is established for inelastic response spectra involving earthquake magnitude,source-to-site distance,and site class based on 266 strong ground motion records which collected from 15 strong earthquakes in California of America.
为研究非弹性反应谱的特征,选用美国西部Californ ia州15次较大地震中的266条强地震动记录,建立了非弹性反应谱衰减规律。
3.
Based on 266 strong ground motion records from 15 significant earthquakes in California of America, an attenuation relationship was developed for ground motion hysteretic spectra with earthquake magnitude, source-to-site distance, and site class.
本文选用美国西部California州15次较大地震中的266条强地震动记录,利用衰减关系建立了滞回能量谱,分析了场地条件、延性系数、震级及距离等参数对滞回能量谱的影响。
5) Strong motion
强地震动
1.
This paper introduces the principle and specification of model GDQJ-1 A strong motion data collection system.
本文介绍了GDQJ-1A型强地震动数据采集系统的结构原理和技术性能,它可用于强地震观测和工程振动测量。
6) earthquake intensity
地震强度
1.
The result suggests that 5th seismic active period of NE China will be over in about 2008,and that the maximal earthquake intensity is about magnitude 6 in this active period.
结果认为,东北第五地震活跃期约到2008年结束,本活跃期最大地震强度为6级左右。
补充资料：爆破震害控制
爆破震害控制
controlling seismic effect from blasting
baoPo zhenha一kongzhi爆破震害控制(eontrolling Seismic effeetfrom blasting)降低爆破地震强度，将震害限定在一定程度的技术。控制爆破地震危害，是爆破安全的必要手段。降震方法主要有三种。(l)微差爆破，其爆破地震波频率高、衰减快，可以实现ms级多段微差爆破，显著减少同时起爆的药量，以降低震动。(2)利用波的干涉作用，适当选择起爆时间间隔，在指定区域可实现波的干扰降震。(3)利用波通过不同介质时产生反射、折射和损耗，设置屏障降震。降震措施有预裂、光面、缓冲、孔内微差和斜线式多段顺序微差爆破等类型，合理应用将有最佳降震效果和较好经济效益。其要点:(1)尽量采用ms雷管新系列产品，新的系列有25一30段;延时精度显著提高;时间间隔趋于合理，便于爆破设计人员选择、调节间隔时间和控制每段药量，实现多段微差爆破。(2)临近边坡永久境界线的爆破，根据边坡岩体稳定性选用合适的降震措施，岩体整体性好的采用预裂爆破，岩体破碎、裂隙发育的采用光面或缓冲爆破。爆区宽度以不超过3Om为好。矿山边坡危险滑体下的爆破须限制一次爆破规模:炮孔不宜超过四排，爆区长度不宜超过滑体宽度的合一号。(3)在重要建筑物附近和危险边坡下方爆破时，尚需进行震动监测。 (韩子荣)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条