The practices prove that the scheme not only can ensure the stability of pre-set laneway and effectively reduce the maintain of laneway,but also is simple in technics,low in cost,high in pract...

• 实践证明,该工艺不仅保证了预留巷道稳定,有效减少了巷道返修量,而且预留工艺简单易行、成本低、实用性强,施工快捷。