Several cases of roof bolting application in various mining and geological conditions were described.
在不同的采矿地质条件下，进行了多种顶板锚固应用研究。
The numerical model of roof bolting and rock mass collaboration was based on Hoek Brown's strength criterion.
基于虎克-布朗强度准则给出了岩体及顶板锚固的数值模型。
Technological and economical analyses show that the breast stoping with roof bolting is more reasonable than others.
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。
The development and research of the bolter, and the improvement of the bolter properties, are the key factors to enhance the quality of the roof bolting support system.
对锚杆钻机进行开发和研究，提高钻机的性能，成为了提高锚杆支护质量的关键。
The roof abscission layer is the biggest security hidden danger in bolting support tunnel.
顶板离层是锚杆支护巷道最大的安全隐患之一。
The design and test of bolting and rope support under composite roof are introduced, its technical theory and practical application are also expounded.
介绍在复合顶板下，锚杆和锚索支护的设计和试验，并阐明了该技术的机理以及实践中的具体应用。
Forward support bolt combined with roop rock by bolting can play a roll of combined beam, which can prevent roof rock caving immediately after explosion.
超前支护锚杆锚固后与顶板岩石构成一体，这样使超前锚杆形成组合梁作用，放炮后，能够阻止顶板岩石冒落。
Field experience and similar material simulation indicate that there is the bending catastrophe phenomenon of anchor roof beam in bolting roadway sometimes.
现场经验及模型实验表明，煤巷锚杆支护中有时出现锚固体的弯曲突变失稳现象。
Roof falling of rock bolting supported tunnel is usually paroxysmal in a big area, so safety monitoring is of great importance.
锚杆支护巷道顶板冒落具有突发性和冒落面积大的特点，安全监测非常必要。
In the second step, the prestressed cable is used as reinforced support to the roof plate, and the reinforcement by bolting and grouting with inside grouting bolt is applied to base Angle.
然后再采用预应力锚索对顶板进行加强支护，且对巷道底角采用内注浆锚杆进行锚注加固。
The roof abscission layer is the biggest security risk in bolting support tunnel.
顶板离层是锚杆支护巷道最大的安全隐患之一。
The roof abscission layer is the biggest security risk in bolting support tunnel.
顶板离层是锚杆支护巷道最大的安全隐患之一。
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