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撞楔法是控制破碎围岩巷道稳定的一种常用超前支护技术,为进一步明确该技术的支护机理和参数设计,首先分析了楔子在巷道永久支护区、开挖区和未开挖区内的受力状态,基于弹性地基梁理论建立了力学模型,为该技术的应用提供了简单、实用的理论依据。其次,提出了撞楔法支护参数的系统设计方法,重点分析和量化了支护参数的取值范围,包括楔子的材质、直径、长度、间距、搭接长度、巷道开挖步距等,使支护参数的确定更为具体和可靠。最后,把研究成果成功应用到煤矿中采空区与煤柱交界处下位巷道和采空区下巷道的2个工程实例中,为破碎围岩巷道控制技术的设计提供了参考。
In order to further clarify the supporting mechanism and parameter design of the technology, the wedge method is a commonly used advanced support technology to control the stability of roadway in broken surrounding rock. Firstly, the effect of wedges in the permanent supporting area of the roadway, the excavation area and the un-excavated area The mechanics model is established based on the elastic foundation beam theory, which provides a simple and practical theoretical basis for the application of this technology. Secondly, the system design method of supporting parameters for collision wedge method is put forward. The range of support parameters is analyzed and quantified, including the material, diameter, length, spacing, overlap length, So that the support parameters to determine a more specific and reliable. Finally, the successful application of the research results to the two engineering examples of the coal mine under the goaf and the coal pillar at the junction of the lower and goaf tunnel project, for the broken rock roadway control technology design provides a reference.