Study on the Interaction between Low-Viscosity High-Permeability Pregrouting Sealing Material and Coal and Its Application
In order to ensure the intactness of pressure-measuring boreholes and the accuracy of gas pressure determination, pregrouting treatment with polymer materials is frequently applied to bedding drilling in coal mines. However, the existing polyurethane materials are of high viscosity, low permeability...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Hindawi-Wiley
2020-01-01
|
| Series: | Advances in Polymer Technology |
| Online Access: | http://dx.doi.org/10.1155/2020/1217285 |