Surrounding rock consolidation type coal mine laneway
The utility model relates to a surrounding rock consolidation type coal mine laneway. The surrounding rock consolidation type coal mine laneway is characterized in that grouting holes are formed in the side wall or the top wall of the laneway, grouting pipes are arranged in the grouting holes, pores...
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Zusammenfassung: | The utility model relates to a surrounding rock consolidation type coal mine laneway. The surrounding rock consolidation type coal mine laneway is characterized in that grouting holes are formed in the side wall or the top wall of the laneway, grouting pipes are arranged in the grouting holes, pores are formed in each grouting pipe, and a sealing device is arranged in each grouting pipe. The surrounding rock consolidation type coal mine laneway has the advantages of being capable of meeting the requirements for laneway supporting and protecting in special areas such as the areas with the geological structures and the areas with concentrated stress. The compressive strength of the rock mass consolidated through high polymer material can reach 35 Mpa or above, the maximum compressive strength is 48 Mpa, the tensile strength and the shearing strength is higher than 15 Mpa, and the bonding strength of the rock mass is higher than 3 Mpa; the distance by which a top plate and a bottom plate of the laneway get close to each other is controlled within 150 mm, the displacement of the two sides is controlled within 100 mm, safe use of the laneway is ensured, workloads of secondary maintenance are reduced, and maintenance expenses are greatly saved. |
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