广东农业科学
廣東農業科學
엄동농업과학
GUANGDONG AGRICULTURAL SCIENCES
2010年
2期
219-221
,共3页
土地平整%土方计算%精度分析%反距离加权法%评价
土地平整%土方計算%精度分析%反距離加權法%評價
토지평정%토방계산%정도분석%반거리가권법%평개
land leveling%earthwork count%precision analysis%inverse distance weighted%evaluation
运用误差传播定律分析方格网法计算土方量的理论精度,结果表明:(1)在距离为100m范围内,水准仪、经纬仪和全站仪测量地面高程、方格法计算土石方量的相对中误差分别为4%、8%和2%.(2)随着测量仪器精度的提高,土地平整过程中土方量测量计算的容许误差应由过去的10%提高到6%.(3)用反距离加权插值法计算方格顶点高程可提高方格网法计算土方量的精度.
運用誤差傳播定律分析方格網法計算土方量的理論精度,結果錶明:(1)在距離為100m範圍內,水準儀、經緯儀和全站儀測量地麵高程、方格法計算土石方量的相對中誤差分彆為4%、8%和2%.(2)隨著測量儀器精度的提高,土地平整過程中土方量測量計算的容許誤差應由過去的10%提高到6%.(3)用反距離加權插值法計算方格頂點高程可提高方格網法計算土方量的精度.
운용오차전파정률분석방격망법계산토방량적이론정도,결과표명:(1)재거리위100m범위내,수준의、경위의화전참의측량지면고정、방격법계산토석방량적상대중오차분별위4%、8%화2%.(2)수착측량의기정도적제고,토지평정과정중토방량측량계산적용허오차응유과거적10%제고도6%.(3)용반거리가권삽치법계산방격정점고정가제고방격망법계산토방량적정도.
In this paper,the theoretic precision of the measure of the earthwork volulme is analyzed using the law of error propogation. The results show that (1)while measuring the tertian elevation and calculating the earthwork volume within a span of 100 m, the relative middle error of leveling, stadia measurement, and total station optical electronic tacheometric theodolite is 4%, 8% and 2%, respectively.(2)h suggests that the allowable error of the earthwork count should be limited within 6%, not 10% we supposed, with the precision of the measuring instruments improved.(3)It could improve the precision of earthwork count using square grid method with the way of inverse distance weighted interpolation.
