concrete backfill

Consequently, the results indicate that argil fly-ash concrete is recommended as backfill material.

结果表明：陶粒粉煤灰混凝土应用于桥涵台背回填工程具有明显的优越性，是一种值得推荐的台背回填材料。

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Key construction technique mainly includes maintaining cavern stability, protecting surrounding rock integrity and guaranteeing concrete backfill quality.

关键施工技术主要体现于维护施工期洞室稳定，保护围岩完整性和保证结构混凝土回填质量三方面。

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The final result shows that the stress peak value of the tunnel is reduced by 95% with the foamed concrete backfill layers, and dynamic parameter such as acceleration and displacement is attenuated to a certain extent.

计算结果表明，增加泡沫混凝土耗能层后，坑道结构的应力峰值衰减了95%以上，加速度和位移等运动参数也有不同程度的降低。

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Comparing with conventional concrete backfill technology, the new one of concrete backfill using for embedded pre Pressure steel Pipes has some advantages such as shorter construction period, lower cost.

埋藏式预压力钢管混凝土回填新技术与常规回填相比，简化了施工措施，缩短了工期，具有良好的技术经济效益。

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The dynamic response of tunnels can largely be reduced by the foamed concrete backfill layers, which can be used to construct a sort of ideal energy absorption support structure.

泡沫混凝土耗能层能够明显减小结构的动力响应，可以用来构筑较理想的结构消波吸能型式。

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A Kind of New Technology of Concrete Backfill Using for Embedded Pre-pressure Steel Pipe in Xiangshui Hydropower Station

响水电站埋藏式预压力钢管混凝土回填新技术

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Study on application of argil fly-ash concrete to highway-bridge abutment-backfill

陶粒粉煤灰混凝土在桥涵台背回填中的应用研究

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At last, some suggestions were raised for the concrete backfill mining.

最后对具体的充填开采方法提出了建议.

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An Experimental Study on Strength Properities of Concrete Backfill

混凝土充填体强度特性试验研究

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