Destressing blasting has a broad prospect in roadway maintenance in soft rock.
爆破卸压方法对维护煤矿软岩巷道具有广阔的应用前景。
In 3225a mine roadway as an example, summed up the roadway deformation law, proposed an inter-mining floor roadway maintenance methods, inspected the maintenance effect to a certain extent learn.
以某矿3225大巷为例，总结了巷道围岩变形规律，提出了跨采底板巷道维修方法，考察了维修效果，具有一定借鉴意义。
The deep roadway deformation problem is becoming increasingly serious, much maintenance increases support costs and security is difficult to guarantee.
大采深巷道变形问题日益严重，巷道需要多次维修增加支护成本、安全难以保证。
The modified rubber of the invention can effectively improve the property of pitch, is suitable for roadway paving, and has long service life and can reduce the sequent maintenance charges.
本发明中的新型改性橡胶，可有效改善沥青的性能，适合铺设道路路面，使用寿命长，减少了后续的维护费用。
The modified rubber of the invention can effectively improve the property of pitch, is suitable for roadway paving, and has long service life and can reduce the sequent maintenance charges.
本发明中的新型改性橡胶，可有效改善沥青的性能，适合铺设道路路面，使用寿命长，减少了后续的维护费用。
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