基于定量分析的克孜尔尕哈烽燧遗址本体病害特征研究

克孜尔尕哈烽燧遗址本体发育主要病害为裂隙、掏蚀、冲沟、坍塌和片状剥蚀。为了确定病害是否危及遗址稳定,为保护工作提供有效数据支持,采用OKIO-Ⅱ光栅式三维扫描系统进行了14个月8期次的高精度病害变化特征监测。通过监测数据发现,遗址本体风化年缩进量比较大,北立面风化缩进量最大、风化最严重,西立面次之,南立面最小。冲沟侵蚀缩进量受水流作用的影响小于风化作用的影响,病害特征为:沿中心线侵蚀量大,冲沟两侧小;顶部侵蚀量大,底部小。掏蚀病害发展速率居首位,掏蚀区纵深缩进量两端变化较大,中间变化较小。裂隙病害扩张幅度较小,但绝大部分横向扩张,少数呈现横向收缩现象,整体趋势是扩张的。目前遗址发育的主要病害不影响遗址的整体稳定性,为遗址保护措施的选择提供了有效的数据支持。

Research on characteristics of diseases of Kizilgaha Beacon Tower based on quantitative analysis

According to the main diseases of the ontology of the site of Kizilgaha Beacon Tower,the OKIO-Ⅱ grating three-dimensional scanning system was used to monitor the characteristics of high-precision disease changes 8 times for 14 months.From the monitoring data,it was found that the annual shrinkage of the site body is relatively large.The north facade suffers the largest shrinkage and the most serious weathering,followed by the west facade;the south facade has the smallest shrinkage.The effect of gully erosion shrinkage on water flow is smaller than that of weathering,and the disease characteristics are as follows:the erosion amount along the central line is large while that of the gully sides is small;the erosion amount on the top is large while that of the bottom is small.The development rate of etching disease ranks the first.The deep shrinkage in the etching area changes greatly at both ends and the change in the middle is small.Fracture disease expansion is small,but most is transverse expansion while a few show transverse shrinkage phenomena.The overall trend is expansion.At present,the main diseases developed at the site have not affected the overall stability of the site,and the research provides an effective data support for the selection of site protection measures.