The Preparation of Active Support-Based Sealing Material and Sealing Effect Analysis
نویسندگان
چکیده
To improve the effect of gas drainage, with aim overcoming problem air leakage conventional sealing materials, this study proposed concept drainage borehole active support and developed a new type material properties permeability, fluidity, expansibility, early strength compressive resistance through orthogonal tests. Using specially designed testing device, analyzed development law fracture under action force, which was then verified via field tests at mine in Henan Province, China. The results show that higher expansion rate, smaller internal friction angle cohesion, is reflected sharp decline peak material. force has significant time effect. It increases rapidly first, before its growth rate slows down tends toward certain value. greater provided by material, radius plastic zone breakage zone; observation also true displacement around borehole. sealed boreholes can effectively inhibit cracks hole reduce generation channels. Under same burial depth larger mechanical parameters rock, zone, as well As been proven engineering practice, conditions, concentration 47.5%, 84.8% than original
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ژورنال
عنوان ژورنال: Applied sciences
سال: 2023
ISSN: ['2076-3417']
DOI: https://doi.org/10.3390/app13148338