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土层厚度是反映土地整治工程质量的一个重要控制因素。本文使用美国US Radar公司生产的Seeker SPR探地雷达,采用频率为500 MHZ和250 MHZ的天线对南泥湾土地整治项目新增耕地的土层厚度进行探测,然后通过开挖实测法对探测结果进行比对分析,探讨了探地雷达在土地整治项目中新增耕地土层厚度估测上的适用性。结果表明探地雷达法所测得的结果与实测值相吻合,误差范围在0~5 cm之间,能够满足现行土地工程质量检测的精度要求,且采用500 MHZ频率天线的探测效果要优于250 MHZ。该研究可为土地整治工程的质量评价和验收提供一个新的有效途径和科学依据。
Soil thickness is an important control factor reflecting the quality of land remediation project. In this paper, Seeker SPR ground penetrating radar manufactured by US Radar Company is used to detect the soil thickness of newly-added cultivated land in Nanniwan Land Reclamation Project with 500 MHZ and 250 MHZ antennas. Then, The comparative analysis was conducted to explore the applicability of GPR in estimating the thickness of newly-added cultivated land in land remediation projects. The results show that the measured results of GPR coincide with the measured values and the error range is between 0 and 5 cm, which can meet the accuracy requirements of the existing land engineering quality inspection. The detection efficiency of 500 MHZ frequency antenna is better than 250 MHZ. The research can provide a new effective way and scientific basis for the quality evaluation and acceptance of land remediation project.