郯庐断裂带晓店场地改造与点位稳定性定量分析
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摘要
随着城镇化建设的不断推进,跨断层水准场地遭到干扰甚至破坏的情况愈发严重,对其进行场地改造已迫在眉睫。本文结合江苏省多年场地改造经验,介绍了郯庐断裂带晓店跨断层短水准测量场地改造基本概况,阐述了"零高差法"在场地点位迁移中的独特优势。利用新建点和原建点6个月的跨断层水准跟踪监测数据,通过计算各段的标准差和每公里中误差,分别比较新、旧点间观测结果的稳定性和观测精度。结果表明,采用本方案进行点位改造对于跨断层观测稳定性和精度提升积极作用。
The paper introduces the general situation of cross-fault leveling zone of Xiaodian and expounds the unique advantages of the " Zero Height Difference Method" in the cross-fault leveling site improvement. Based on the leveling tracing monitoring data during 6 months, the paper compares respectively the stability and observation accuracy of the new and old observations through the calculation of standard deviation and error in per kilometer of paragraphs. The results show that the method can improve the observation stability and precision of the cross-fault leveling.
The paper introduces the general situation of cross-fault leveling zone of Xiaodian and expounds the unique advantages of the " Zero Height Difference Method" in the cross-fault leveling site improvement. Based on the leveling tracing monitoring data during 6 months, the paper compares respectively the stability and observation accuracy of the new and old observations through the calculation of standard deviation and error in per kilometer of paragraphs. The results show that the method can improve the observation stability and precision of the cross-fault leveling.
引文
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[2]游丽兰.跨断层测量基础理论及标准化研究[M].北京:地震出版,1995.
[3]薄万举,谢觉民.地壳形变测量用于地震预报的研究[J].大地测量与地球动力学,1994,14(2):13-19.
[4]楼关寿,周伟,金鹏,等.跨断层形变观测干扰因素的调查[J].大地测量与地球动力学,2010,30(S2):68-74.
[5]吴晓峰,丁占春,宋浩等.利用“零高差法”进行跨断层地震监测点的迁移保护[J].科技创新导报,2015(18):75-76.
[6]范久善,游丽兰,朱清声,等.跨断层测量规范[M].北京:国家地震局,1991
[7]李志平,周必才,葛计划,等.合肥台定点短水准测量场地改造[J].华南地震,2009,29(3):133-137.
[8]戴波,张杨,王凯.江苏郯庐断裂带断层气测量与地球化学特征[J].华南地震,2016,36(3):104-109.