| 煤矿井下自动封孔装置坐封与注浆压力研究 |
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| 引用本文： | 李程程,王毅,王力,段会军.煤矿井下自动封孔装置坐封与注浆压力研究[J].煤田地质与勘探,2021,49(2):253-259. |
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| 作者姓名： | 李程程 王毅 王力 段会军 |
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| 基金项目： | 国家重点研发计划课题(2018YFC0808005) |
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| 摘 要： | 注浆压力和坐封压力是设计煤矿井下自动封孔装置所需的主要参数，同时也是自动化封孔施工设计的重要依据。以浆液的有效封堵半径为基础，采用理论计算、数值模拟等方法分析了不同注浆压力条件下的封孔效果，结合橡胶的Mooney-Rivlin本构模型的力学特征、挤压密封等原理，研究并确定最佳注浆压力和坐封压力。结果表明，注浆压力为2~4 MPa时浆液的径向封堵范围达2~4 m，可以满足对钻孔的封堵要求；当钻孔直径为96~100 mm时，坐封压力范围为2.2~8.4 MPa，可以使装置达到最佳坐封效果。研究结果可为装置的设计提供理论基础，为装置应用所需技术参数的确定提供理论依据。
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| 关 键 词： | 瓦斯抽采 封孔装置 注浆压力 坐封压力 |
| 收稿时间： | 2020-11-23 |
Research on the grouting and setting pressure of the automatic hole sealing device in underground coal mine |
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| Abstract: | Grouting pressure and setting pressure are the main parameters for designing an automatic hole sealing device in coal mine, and they are also the important basis for the design of automatic hole sealing construction. Based on the radial sealing range of the slurry, the paper analyzes the sealing effect under different slurry pressure conditions by means of theoretical calculation and numerical simulation. Combined with the mechanical characteristics of the rubber Mooney-Rivlin model, extrusion seal and other principles, the optimal injection pressure and setting pressure are studied and determined. The results show that the radial sealing range of the slurry at a pressure of 2 to 4 MPa is 2 to 4 m, which can meet the sealing requirements for drilling. When the drilling diameter is 96 to 100 mm, the setting seal pressure of 2.2 to 8.4 MPa can make the device achieve the best setting sealing effect. The results can provide a theoretical basis for the design of the device and provides a theoretical basis for determining the technical parameters of the application of the device. |
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