研究证明，液压护顶长壁法是开采缓倾斜极薄类铁矿床最优的采矿方法。
The research result shows that longwall mining method with hydraulic pressure frame supporting capping rock is the optimal mining proposal for the gently inclined and extremely thin iron mine.
针对现场的需要，设计制备了一种以改性MC尼龙为原材料的护顶铰接顶梁。
In view of the worksite demand, a noosing cross beam for the lop protection was designed with MC nylon as raw material.
通过多种采矿方法的技术经济分析，认为采用锚杆护顶的全面采矿法较为合理。
Technological and economical analyses show that the breast stoping with roof bolting is more reasonable than others.
针对这一情况，从药室爆破放顶充填采空区，从而达到分层崩落法采矿的护顶层要求。
Based on this case, through filling the gob area by means of chamber blasting, the requirement of protective top - layer for slicing and caving can be achieved.
针对采矿技术条件复杂的薄矿脉开采，推荐采用有钢筋混凝土护顶的下向分层充填采矿法。
The underhand slice stoping method, with reinforced concrete for roof support, is recommended to mine narrow veins where the mining technological conditions are very complicated.
今后在金矿床开采中应致力于新的采矿方法研究和推广应用，改进和完善护顶技术，提高机械化水平。
In the future, the efforts to research and deploy the mining methods, modify and perfect the roof support techniques and improve the mechanization should be made in the mining of gold deposits.
护坡覆盖的范围，上游由坝顶护至水库最低水位以下一定距离，一般在最低水位以下2.5米。
Revetments protect the space from dam crest to the line a certain distance, normally 2.5m, under the minimum water level of the dam upstream.
下游面则由坝顶护至排水棱体，无排水棱体时则护至坝脚。
For those downstream, they protect the space from dam crest to draining prism or to dam heel in event of no prism.
根据河湾迎流顶冲位置和河床冲深，确定护岸范围和优选护岸护底方案。
Based on the scouring position and depth by current in river bend the scope of bank protection and better selection scheme of bank protection are determined.
⊙、同顶一片蓝天，共护一方水土。
取出后用干净的护颈垫围住脖子，顶靠着椅子使用效果会更好。
The effect will be better if your head lies against a chair. If it is too hot, a towel can be used to cover it.
取出后用干净的护颈垫围住脖子，顶靠着椅子使用效果会更好。
The effect will be better if your head lies against a chair. If it is too hot, a towel can be used to cover it.
应用推荐