Then the door opened and two little girls entered, followed by a young lady, who regarded with some anxiety the lively way in which little Rita ran bounding through the room in order finally to spring with one big leap on her papa's knee. By her skill in jumping it was plain to see that it was not the first time she had accomplished this. Rita now looked triumphantly around as if to say: "Now I am once more seated in my strong castle where no harm can reach me!"济宁组合式中空注浆锚杆新闻看点丰城自进式中空注浆锚杆行业要闻莱阳自进式中空注浆锚杆机械看点丰城自进式中空注浆锚杆行业要闻In addition, expectations of an IPO flood, and restrictions to preempt shadowy mergers and acquisitions or M&A aimed at boosting weak shares, have hurt the ChiNext Index, said Fu Jingtao, a market strategist with Shenwan Hongyuan Securities.
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.
"Oh, Papa, now I have found you! When are we going to the Gemmi?"龙海组合式中空注浆锚杆新闻资讯丰城自进式中空注浆锚杆行业要闻平度组合式中空注浆锚杆行业资讯丰城自进式中空注浆锚杆行业要闻 "I am going right away, Papa," said Rita assuringly, but first she straightened herself up in her castle, and said:
