Application:

The traditional motor anchor is replaced by Hollow Grouting Anchor, which completely solves the problems of existed in the former one and realizes full and pressured grouting. So this anchor is widely used in radial and slope reinforcement as well as pit support.

Structure:

Hollow grouting consists of anchor body, head, stopper, plate and nut, which guarantee the dense grouting at the maximum. And the motor can be penetrated into the cracks of surrounding rock under the force of several Mpa. In addition it is easy to install the plate and nut.

Feature:

 Hollow grouting anchor embodies the anchoring and grouting as a whole. It is unnecessary to pull out the anchor after grouting since it is used a grouting pipe during construction. Compared with that of traditional one, this anchor is characterized by the following:

1、It has the function of grouting due to its hollow design and motor loosing is avoided;

2、Full and pressured grouting are available, which improves the quality;

3、The anchor body can be positioned in the middle very well under the help of various spare parts. Furthermore the anchor is covered by motor in full length and erosion is avoided, realizing the purpose of long-term support;

4、It is very easy to install the plate and nut without needing machining thread at site.

Construction technology

It is very easy to use hollow grouting anchor, which the traditional technology of anchoring after grouting is replaced by grouting after anchoring. With the grouting pressure of several kilograms, the anchor holes are fully filled and the grout is penetrated into the cracks under the help of pressure to improve the surrounding rock.

1、To drill hole with ordinary jackhammer and then clean it;

2、To insert hollow grouting anchor with head in the hole and the hangnail on the anchor head catches anchor. To install grouting stopper, plate and nut;

3、To connect anchor end with the grouting pump by an adaptor;

4、To grout to designed value in the case of pressured grouting for improving surrounding rock.