塔山矿松软煤层中特大硐室掘进与支护技术

Excavation and support technology for ultra larger chamber in soft and broken seam of Tashan Mine

为了控制松软破碎煤层中特大硐室围岩变形和提高施工速度,根据变性力学机制分析,采用了高主动性、高强度、高刚度的联合支护技术,掘进采用了导硐掘进技术。施工结果表明:锚杆、锚索、喷浆、格栅混凝土砌碹联合支护方式能够有效地控制特大硐室围岩的变形,保证了支护安全,导硐掘进技术有利于特大断面硐室的施工组织,更有利于施工安全,使硐室施工实现了快速、优质、安全、高效的目的。总结出了一套松软破碎煤层中特大硐室的掘进与支护技术的经验,使大同矿区的软岩巷道支护技术水平上了一个新台阶。

In order to control the surrounding rock deformation and improve the construction speed of the ultra lager chamber in the soft and broken seam,according to the analysis on the denatured mechanics mechanism,the high initiative,high strength and high rigid combined support technology was applied to the excavation of the larger chamber and a pilot tunnel excavation technology was applied to the excavation of the larger chamber.The construction results showed that the combined support technology with the bolt,a...