In the support project of soft-rock tunnel, the pullout resistance of the Self-screwed Slip Casting Tube Bolt is the critical technical parameter that related to the security of anchorage system.
在软岩隧道支护中，自旋注浆锚管的抗拔力是至关重要的技术参数，关系到锚固体系的安全。
It is of great interests to engineers and researchers to study the mechanism of the soil nail pullout resistance under different conditions.
土钉在不同条件下的抗拔机制仍是进一步研究的课题。
Parametric analysis is carried out to investigate the effects of soil dilation and overburden pressure on the soil nail pullout resistance.
结果显示，当上覆压力较小时，剪胀角对抗拔应力的影响较小。
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