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通过对位于浙江省衢州市南宗孔氏家庙中2个建造于1520年的流纹岩灯台的风化进行研究,不仅得出流纹岩在潮湿环境下的风化速度为0.4～9.7mm/(100a),而且发现不同灯台之间、同一灯台的不同部位之间以及同一灯台同一部位不同朝向之间的风化速度都有较大的差异。如:(1)灯台1和2上圆盘上表面朝北向的风化速度分别为4.3和9.7mm/(100a),大于朝南向的风化速度,分别为基点(即未风化点)和2.1mm/(100a);而下圆鼓则恰恰相反:灯台1朝西南向和灯台2朝南向的风化速度则是其下圆鼓中最大的(分别为3.08和2.05mm/(100a))。据分析,造成这种差异的原因是灯台所处的微环境(如风、降水、太阳辐射等)的不同。(2)与其他部位相比,两灯台上圆盘插烛孔的风化速度最小,其最大值为1.0mm/(100a)。这可能是因为插烛孔内常年积水而隔绝空气所致,可以通过采取改善石灯台风化环境的措施对其进行长期保护。
By studying the weathering of two rhyolite sterns constructed in 1520 in the Confucian temple of Nanzong in Quzhou City, Zhejiang Province, not only the weathering rate of rhyolite in wet environment is 0.4 ~ 9.7mm / (100a ), And found that there is a big difference in the weathering rates between different lampstands, between different parts of the same lampstand, and between different orientations of the same part of the same lampstand. For example: (1) The weathering velocities of 4.3 and 9.7mm / (100a) to the north towards the upper surface of the disc on the lampstands 1 and 2, respectively, are greater than those toward the south, which are respectively the base point (ie unweathered point) and 2.1mm / (100a); while the lower one is exactly the opposite: the weathered speed of the lampstand 1 towards the southwest and towards the lampstand 2 is the largest (3.08 and 2.05mm / (100a) respectively). According to the analysis, the reason for this difference is the difference in the microenvironment (such as wind, precipitation, solar radiation, etc.) where the lampstand is located. (2) Compared with other parts, the insertion speed of the candlestick on the disk of the two lamp holders is the least, and the maximum value is 1.0mm / (100a). This may be due to the year-round plunging of the candlestick caused by the air from the air, which can be protected for a long time by taking measures to improve the weathered environment of the stone lampstand.