• 中文核心期刊
  • 中国科技核心期刊
  • RCCSE中国核心学术期刊

二氧化碳致裂器泄能关键参数研究

彭然

彭然. 二氧化碳致裂器泄能关键参数研究[J]. 煤矿安全, 2018, 49(12): 31-34.
引用本文: 彭然. 二氧化碳致裂器泄能关键参数研究[J]. 煤矿安全, 2018, 49(12): 31-34.
PENG Ran. Study on Key Parameters of Carbon Dioxide Fracturer During Energy Discharge[J]. Safety in Coal Mines, 2018, 49(12): 31-34.
Citation: PENG Ran. Study on Key Parameters of Carbon Dioxide Fracturer During Energy Discharge[J]. Safety in Coal Mines, 2018, 49(12): 31-34.

二氧化碳致裂器泄能关键参数研究

Study on Key Parameters of Carbon Dioxide Fracturer During Energy Discharge

  • 摘要: 为致裂器爆破能达到最佳的效果,开展了准静态强度测试、动态爆破致裂试验,分析了二氧化碳致裂器泄放压力与定压剪切片厚度、发热材料用量和液态二氧化碳充装量之间的关系,并得出了泄放压力模型;通过压力的计算分析和三维流体模拟,分析出泄能口的最优布置方式。试验结果表明:定压剪切片厚度为3 mm时,准静态抗剪强度为130 MPa,合理的发热材料用量为113 g,泄放压力峰值约为185 MPa;厚度为4 mm时,准静态抗剪强度为220 MPa,合理的发热材料用量为163 g,泄放压力峰值约为263 MPa;在保证整体刚度和使用寿命前提下,尽量减小泄能通道长度,增大孔直径,断面面积与定压剪切片破断面积相同,腔内壁光滑,泄能口倾角75 °为宜。
    Abstract: In order to achieve the best blasting effect, quasi static strength test and dynamic blasting splitting test were carried out. And the release pressure and the thickness of the constant pressure shear sheet of the carbon dioxide fracturers were analyzed, and the relationship between the amount of heating material and the filling amount of liquid carbon dioxide were determined. Finally, the model of discharge pressure were obtained. The optimal layout of the outlet was analyzed through the calculation and analysis of pressure and three-dimensional fluid simulation. The test results showed that when the thickness of the shear sheet was 3 mm, the quasi-static shear strength was 130 MPa, and the reasonable amount of heating material was 113 g, and the peak discharge pressure was about 185 MPa. When the thickness was 4 mm, the quasi-static shear strength was 220 MPa, and the reasonable amount of heating material was 163 g, and the peak discharge pressure was about 263 MPa. Under the premise of guaranteeing the overall stiffness, the length of the discharge channel was minimized and the diameter of the hole was increased. The cross section area was the same as that of the constant pressure shearing slice, the cavity wall was smooth and the angle of outlet inclination was 75 °.
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  • 发布日期:  2018-12-19

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