Research Article

Research on the Deformation and Control Technology of Surrounding Rock in Entry Retaining along the Gob Side

Table 5

The details of the grouting parameters.

Related indicatorsParameters

Grouting materialJinan reinforcement I
Grouting formDeep and shallow hole grouting
Grouting hole layoutThree-two layout
Grouting pressure0.7 MPa (shallow hole), 2 MPa (deep hole)
Grouting time per hole600 s