为了减少煤炭损失，提高回采率，在加采到底煤较厚地段时，采取背杆落底技术措施，提高了采面资源回收率。

In order to reduce the coal loss and raise recovery ratio, the technique measures of backing poles and falling the bottom are adopted. The recovery rate of face resources is raised.

youdao

分析其原因并采取一些措施后，P 2o5回收率提高到86.98%，仍低于设计指标。

With the reason analyzed and some measures taken, P2O5 recovery increased to 86.98%, still lower than the designed index.

youdao

新河煤矿采用旋转法的方式进行工作面优化设计，并采取各类措施，提高工作面回收率，取得较好的回采效果。

Rotating coal mining method is optimized in Xinhe Coal Mine. Measures are taken so as to increase coal winning ratio and comparatively good coal winning result is achieved.

youdao