摘要
随着我国电力基础设施建设的快速发展,电力塔基深孔施工量庞大。但该类孔径测量依赖人工测量,存在测量效率低、测量误差大、安全风险大等问题。施工企业迫切希望获得自动深孔测量设备,以便实现高效、安全的掏挖基础孔测量。为此,对孔径测量方法进行了研究,并提出了外接圆孔径测量法。通过等角度设置三个激光测距仪,利用余弦公式与外接圆半径公式即可获得所测截面孔径。设计了电子水平调整装置与电子水平补偿算法,保障了测量仪器的水平状态。对深孔测量装置进行了实地测试分析。测试结果表明,所设计的深孔测量系统孔径测量范围为400~2 000 mm、孔径测量误差在孔径为2 000 mm时小于5 mm、孔深测量范围为30~20 000 mm、孔深测量误差在孔深为20 000 mm时小于10 mm,能够满足电力塔基深孔测量的需求。
With the rapid development of China’s electric power infrastructure construction, the construction of deep holes in the power tower base is huge. However, this type of hole measurement relies on manual measurement, which has problems such as low measurement efficiency, large measurement error and high safety risk. Construction companies are eager to obtain automatic deep hole measurement equipment to achieve efficient and safe hollowing foundation hole measurement. For this reason, the hole diameter measurement method is studied, and the external circular hole diameter measurement method is proposed. By setting three laser distance meters at equal angles, the hole diameter of the measured section can be obtained by using the cosine formula and the external circle radius formula. The electronic level adjustment device and electronic level compensation algorithm are designed to guarantee the level status of the measuring instrument. The deep hole measuring device is tested and analyzed in the field. The test results show that the designed deep hole measurement system has a hole diameter measurement range of 400~2 000 mm, a hole diameter measurement error of less than 5 mm with the hole diameter of 2 000 mm, a hole depth measurement range of 30~20 000 mm, and a hole depth measurement error of less than 10 mm with the hole depth of 20 000 mm, which can meet the demand of deep hole measurement of power tower base.
作者
张白
刘杰
孔德超
王磊
ZHANG Bai;LIU Jie;KONG Dechao;WANG Lei(School of Electrical Information Engineering,North Minzu University,Yinchuan 750021,China)
出处
《自动化仪表》
CAS
2022年第9期73-76,81,共5页
Process Automation Instrumentation
基金
国家自然科学基金资助项目(52065002)。
关键词
电力塔基
激光测距
余弦公式
外接圆
水平调整
补偿算法
孔径
孔深
Power tower base
Laser ranging
Cosine formula
External circle
Horizontal adjustment
Compensation algorithm
Hole diameter
Hole depth
