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预留间隙卸压允许围岩发生一定变形,可实现巷道围岩的支护。将泡沫混凝土材料填充于巷道预留卸压间隙中作为柔性层,可为巷道卸压支护提供新的研究方法。通过建立数值模拟模型,对泡沫混凝土充填预留卸压间隙巷道进行力学特性研究,并对卸压支护原理进行分析,数值模拟了泡沫混凝土充填预留卸压间隙的巷道稳定性。
Reserving gap pressure relief allows some deformation of the surrounding rock, enabling the surrounding rock roadway support. The foam concrete filled in the roadway clearance pressure relief gap as a flexible layer, which can provide new research methods for roadway pressure relief support. Through the establishment of numerical simulation model, the mechanical properties of foam concrete filled with pressure relief clearance are studied, and the principle of pressure relief and support is analyzed. The stability of the roadway with foam concrete preloading pressure relief gap is numerically simulated.