求翻译：本文针对山区水电站易受雷击，而山区的土壤电阻率偏高，水电站接地网的接地电阻难以降低问题，提出在山区高土壤电阻率地区的水电站接地网改造中利用站内地网和附近水库设置水下地网相综合的方法来降低接地电阻值。通过对冲江河水电站周围环境及土壤电阻率的调查和测试，结合相关规程，根据实际情况，对冲江河水电站接地电阻严重超标的情况提出了两种整改措施与方案。计算分析比较了两种具体的实施方案，选择了一种比较科学有效的方案在冲江河水电站实施了接地网改造，并对改造后的结果进行了验证。是什么意思？

This paper mountain hydropower station is vulnerable to lightning, mountains higher soil resistivity, difficult to reduce grounding resistance of grounding grid problems of hydropower station, made in high soil resistivity area in mountain area of grounding grid reconstruction used in hydropower station Reservoir near station network in the Mainland and set up integrated water network phase under way to reduce grounding resistance value. By hedges around the River hydropower station environment and soil resistivity survey and testing, combined with relevant statutes, according to the actual situation hedge River hydropower station grounding resistance has serious over proposed two measures and programmes. Calculation analysis and comparison of two specific implementation programmes, selecting a more scientific and effective grounding network improvement programme was introduced in Red River hydropower station and the reconstruction after the results were verified.