基于BOTDR的一种土压力测量管研究
摘要:目前振弦式土压力计以及电阻式土压力计虽然被广泛使用,但具有成本较高、抗电磁干扰性较差、仪器成活率偏低等缺点,并且测试数据容易失真,难以准确测量土压力。基于BOTDR设计一种土压力管用于土压力的监测,介绍土压力管的结构特征、测量原理,并对其进行压力、温度的标定试验。在室外场地通过钻孔直埋的方法将压力管埋入地下25 m进行实地测量,获取测量数据,并与振弦式土压力计数据及计算值进行了对比,说明该压力管测量土压力方法有效。
Abstract:At present, the vibrating wire soil pressure gauge and the resistance-type soil pressure gauge are widely used. However, there are some disadvantages, such as high cost, poor anti electromagnetic interference and low survival rate of the instrument. Moreover, the test data are easy to be distorted and it is difficult to accurately measure the soil pressure. Based on BOTDR, a soil pressure pipe for soil pressure monitoring is designed. The structural characteristics and measuring principle of the soil pressure pipe are introduced, and its pressure and temperature calibration tests are carried out. In the outdoor field, the pressure pipe is buried 25 m underground by the method of drilling directly, and the field measurement is carried out to obtain the data. The comparison with the data of vibrating wire soil pressure gauge and the calculated value shows that the method is effective.
中文标题：
基于BOTDR的一种土压力测量管研究
Soil Pressure Measuring Pipe Based on BOTDR
作者：
李超,肖景泽,刘予,何静,周圆心
Li Chao,Xiao Jingze,Liu Yu,He Jing,Zhou Yuanxin
作者简介:李超,男,1979年生,汉族,湖北武汉人,工学学士,高级工程师,主要从事地下空间资源安全监测工作。E-mail:48717245@qq.com
通讯地址：
北京市地质调查研究院, 北京 100195
BeijingInstituteofGeologicalSurvey,Beijing100195,China
中图分类号:TU432
doi:10.3969/j.issn.1007-2993.2020.04.002
出版物：岩土工程技术
收稿日期:2020-01-03
网络出版日期:2021-07-06
关键词:BOTDR,土压力管,土压力,测量原理,标定试验
Key words:BOTDR,pressure pipe,soil pressure,measuring principle,calibration tests
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