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山区输电杆塔多建于山坡上,具有勘察资料不全、无边坡支护措施等特点,塔基山坡稳定性已成为影响输电线路正常运行的重要因素。基于改进的属性识别模型,对塔基山坡稳定性进行评价分级。首先,对某区域内山坡的稳定性影响因素进行分析总结,选择山坡坡角、坡面形态、植被发育特征、岩土体特征、降雨入射角、风化作用以及人类活动程度7个因素作为塔基山坡的稳定性评价指标,采用综合赋权法确定各指标权重;然后在构建各评价指标的属性测度函数过程中,重新推导单指标等级划分中次高级别和最高级别的单指标属性测度函数,使其更加规范适用;最后采用灰色关联度对塔基山坡稳定性进行识别分级。该方法应用于广东省中山市输电杆塔塔基山坡稳定性评价分级中,评价结果与山坡的现场实际情况吻合较好,为输电杆塔塔基山坡的稳定性评价分级提出了一种有效途径。
The mountainous transmission tower is mostly built on the hillside, which has the characteristics of incomplete survey data and no support measures for the slope. The stability of Taki hill has become an important factor affecting the normal operation of the transmission line. Based on the improved attribute identification model, the stability of Taki hill slope is evaluated and classified. Firstly, the influencing factors of slope stability in a certain area are analyzed and summarized. Seven factors, hillside angle, slope shape, vegetation development, rock and soil characteristics, rainfall incident angle, weathering and human activity, Then, in the process of constructing the attribute measure function of each evaluation index, the sub-high-level and highest-level single-measure attribute measure functions in the single-index level division are deduced again, Making it more standardized and applicable. Finally, the gray correlation degree is used to identify and classify the stability of the Taki hill slopes. The method is applied to the stability evaluation of the hillside of power transmission tower in Zhongshan City, Guangdong Province. The evaluation results are in good agreement with the actual situation of the hillside. It provides an effective way for the stability evaluation of the tower.