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采用RFPA2D数值模拟方法,分析巷道在无支护、锚网索+钢棚支护和全断面锚注支护3种形式下巷道围岩的变形破坏和裂隙演化过程。对RFPA2D数值模拟过程研究分析表明,采用全断面锚注支护时,在较高应力作用下巷道围岩仍能保持较好的完整性,基本无明显破坏现象,对软岩巷道稳定性的维护具有显著意义。
Using RFPA2D numerical simulation method, the deformation and failure of the surrounding rock and the fissure evolution of the roadway under the three types of roadway without support, anchor net + steel shed support and full section bolting and grouting are analyzed. The research and analysis of RFPA2D numerical simulation process shows that the surrounding rock of the roadway still maintains a good integrity under the condition of high stress with almost no obvious damage, and the maintenance of soft rock roadway stability Have significant meaning.