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中文摘要：
井下导线网平差过程中,权的选取对平差结果会造成一定影响。定权不合理会导致边角观测值改正数分配不合理,严重时会导致控制网变形扭曲,平差结果不能反映实际观测。Hlemert 验后方差估计采用最小二乘原理定权,为探讨应用验后方差估计来评定井下加测陀螺边的首级控制导线网权的选取问题,以山西平朔安家岭井工一矿进行实例分析,结果表明,利用Hlemert验后方差估计,可以很好地对整个井下控制网进行定权,提高井下控制导线点的点位精度,在实际生产中产生了很好的经济效益。
英文摘要：
In the process of underground network adjustment,the selection of weight impacts on the adjustment result.Unreasonable weight determination can result in the incorrect distribution of triangulateration value observations,and even seriously lead to distortion deformation of control network.The adjustment results can not reflect the actual observation.Helmert posterior variance estimation adopts the principle of least square to determine the weight so as to analyze the selection estimation of the top control network at underground gyro edge with application of the posterior variance estimation.Taking a Anjialing mine of Shanxi Pingshuo as a case,the results show that the Helmert posterior variance estimation can fix weight of the whole underground control network well and improve the point location precision of mine control survey with good economic benefits obtained in the actual production.
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