In power project construction in mountainous areas, many are concerned of gravel backfill soil slopes and treatments.
在山区发电工程建设工程中，许多项目涉及到碎石回填土的边坡和地基问题。
According to the research, the natural graded gravel is the best backfill material of graded crushed stone, grit, lime stabilized soil and rock chips.
研究表明，在连续级配碎石、砂砾、石灰稳定土、石屑几种回填材料中以自然级配砂砾石为最佳台背回填材料。
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