High pressure grouting and plugging is the use of mechanical high-pressure power to pour water-soluble polyurethane chemical grouting material into concrete cracks. High pressure grouting and plugging technology is a new advanced technology of high pressure and airless perfusion waterproofing, and is a new technology used in developed countries. How to seal up the high pressure grouting? Let's have a look.

 1.确定防水堵漏方案

1. waterproof scheme

       堵漏前必须进行现场调查，摸清现场施工情况，分析渗漏水的原因，查清漏水部位、裂缝、裂纹或穿孔的宽度、长度、深度和贯穿情况，并了解雨天和晴天的漏水情况，测量漏水的流量与流速等，通过充分调查，正确拟定堵漏方案，做好各项准备工作。

The field investigation must be carried out to find out the site construction situation, analyze the causes of the leakage, find out the width, length, depth and penetration of the leak location, crack, crack or perforation, and understand the leakage of the rain and the clear day, measure the flow and flow rate of the leakage, and make the full investigation. Fix the leakage scheme and do all the preparations.

2.材料性能特点

Performance characteristics of 2. materials

        油性聚氨酯快速堵漏胶与水即反应，由于水参与了反应，浆液不会被水稀释冲走，这是其他灌浆材料所不具备的优点，浆液在压力作用下，灌入混凝土缝隙或孔洞，同时向缝隙周围渗透，继续渗入混凝土缝隙，最终形成网状结构，成为密度小，含水的弹性体，有良好的适应变型能力，止水性好。

As the water participates in the reaction, the slurry will not be diluted and washed away by water. This is the advantage that other grouting materials do not have. The slurry is poured into the cracks or holes in the concrete under the action of pressure, and permeates the cracks around the cracks, and continues to infiltrate into the cracks in the concrete. Finally, the shape of the concrete is penetrated into the crevice of concrete. Finally, the shape of the concrete is infiltrated into the crevice of concrete. Finally, the shape of concrete is infiltrated into the crevice of concrete and finally form shape. It has a network structure and becomes a small density and water bearing elastomer. It has good adaptability and variant ability and good watertightness.

3.灌浆孔的设计和布孔

3. design and perforation of the grouting hole

灌浆孔的布孔有骑缝和斜孔两种形式，根据实际情况和需要加以选择，必要时两者并用。

The grouting hole hole perforation and inclined hole two forms to choose according to the actual situation and needs, and both when necessary.

（1）灌浆孔的设计：灌浆孔的位置，应使孔和漏水裂缝空隙相交，并选在漏水量最大处。（2）布孔原则：注浆孔眼的位置和数量，需根据不同漏水情况进行合理安排，以导出漏水为目的，在集中漏水处布孔，裂缝大、水流量大则孔距大，缝隙小则孔距小。

(1) design of grout hole: location of grouting hole should make intersection between holes and leakage cracks, and choose the largest leakage volume. (2) distribution hole principle: the position and quantity of grouting hole should be rationally arranged according to different leakage conditions. In order to derive leakage, the hole is distributed in the concentrated leaking area. The holes are large and the water flow is large, the gap is small and the hole distance is small.

4、打孔可视施工条件采用手工和机械方法

4, perforation visual construction conditions by manual and mechanical methods.

一般是手工打孔和机械打孔并用。

It is usually handmade and mechanically perforated and used.

5、检查灌浆设备和管路运转情况

5. Check the operation of the grouting equipment and pipeline