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利用中国矿业大学的大型多功能竖井模拟试验台，用模拟试验的方法研究对深厚表土层底砾层进行注浆加固防治井壁破裂技术的可行性。模拟试验结果表明，对深厚表土层底砾层进行注浆加固可以显著减小井壁的竖直附加力，用注浆加固底砾层法防治井壁破裂是可行的。
Using the large-scale multi-function shaft simulation test stand of China University of Mining and Technology, the feasibility of grouting reinforcement on the bottom gravel layer to prevent and control the borehole wall rupture was studied by means of the simulation test. The simulation results show that grouting reinforcement of the bottom gravel layer in deep overburden can significantly reduce the vertical additional force of the wellbore wall, and it is feasible to prevent the wall rupture by grouting reinforcement and gravel layer method.