The little fellow, who had just come out of the woods to the cottage, now stood still and looked full of astonishment at what was going on in front of the house-door.伊春组合式中空注浆锚杆机械要闻河北唐山组合式中空注浆锚杆机械快讯池州自进式中空注浆锚杆机械快讯河北唐山组合式中空注浆锚杆机械快讯That pressure has pushed the average price multiple to around 40 now. It will continue to find its bottom in the coming months, Chen said.
中空锚杆的锚杆体采用中空设计，杆体中孔作为钻进高压风水通道和注浆通道，与实心杆体相比，中空杆体设计可获得更好的刚度和抗剪强度。锚杆体外表面全长标准大螺距螺纹结构，螺纹结构便于锚杆的切割和接长，与光滑杆体相比增加了锚杆体与注浆材料的粘接面积从而提高了锚固力。
中空注浆锚杆应用范围：
1、公路、铁路、隧道支护。
2、边坡支护用中空注浆锚杆加固不稳定边坡，不但工艺简单、成本低廉，而且施工方便快捷，效果显著。
3、基坑支护建筑物的基坑加固采用中空注浆锚杆，不但工艺简单，而且可实现压力注浆，改良基坑围岩条件。
产品分类及组成：
普通式中空注浆锚杆由：锚杆体垫板螺母止浆塞塑料锚头
自进式中空注浆锚杆由：锚杆体垫板螺母止浆塞合金钻头
组合式中空注浆锚杆由：锚杆体垫板螺母止浆塞钢筋锚头排气管 连接套
预应力中空注浆锚杆由：锚杆体垫板螺母止浆塞涨壳锚头
产品施工工艺：
（1）普通式中空注浆锚杆：
1、用凿岩机钻孔（￠40mm--￠42mm）
2、将锚头装在锚杆体上，置入孔内
3、安装止浆塞 点按 螺母
4、直接用螺杆式砂浆灌浆泵进行注浆。
（2）自进式中空注浆锚杆：
1、在中空锚杆体头部装上硬质合金钻头，用锚杆体代替钻杆进行钻进，纤尾连接杆把锚杆体和凿岩机相连，用凿岩机凿孔至设计锚杆深度；
2、安装止浆塞，卸下钻机并装上止浆塞安装在距离锚孔口50px处；
3、安装垫板 螺母后进行注浆。
（3） 中空组合式锚杆：
1. 钻进,成孔;
2. 插入锚杆:将安装好锚头、组合式连接套、排气管的LHZ系列中空组合式锚杆体插入钻孔;
3. 安装止浆塞、垫板、螺母
4. 连接注浆机:通过快速注浆接头将锚杆尾端与注浆机连接;
5. 注浆:待排气管口有水泥砂浆渗出,即可停止注浆.
The commodity stocks are hot picks for their low PE ratio and companies' good performance, said Chen. "The higher-than-expected 6.9 percent GDP growth in the first half of this year and the central government's firm supply-side reforms like overcapacity reduction have boosted investor confidence."马鞍山中空锚杆25/32锚杆新闻周刊河北唐山组合式中空注浆锚杆机械快讯韶山自进式中空注浆锚杆机械看点河北唐山组合式中空注浆锚杆机械快讯The commodity stocks are hot picks for their low PE ratio and companies' good performance, said Chen. "The higher-than-expected 6.9 percent GDP growth in the first half of this year and the central government's firm supply-side reforms like overcapacity reduction have boosted investor confidence."
