Impact mechanical response and pressure relief-reset behavior of innovative shaft explosion-proof door [新型立井防爆门冲击力学响应与泄压复位行为]

作者：Wang Y.^*; Niu K.; Dong Y.; Gao J.; Pan R.; Wang L.

来源：Journal of China University of Mining & Technology, 2021, 50(4): 755-763.

• Effective reset
• Explosion-proof door
• Impact load
• Intelligent ventilation
• Mechanical response

Aiming at the problem that the traditional explosion-proof door can not be reset and reused in the process of emergency opening, this paper carried out the modeling research on the impact mechanical response characteristics, pressure relief and reset performance of explosion-proof door. Based on the key technology and optimization design of the new explosion-proof door in the intelligent ventilation demonstration construction of Yangchangwan No.2 well, the shock dynamics of the explosion-proof door in the whole process of pressure relief and reset under the condition of explosion wave was studied by using the nonlinear finite element method, the transient change law of the mechanical response distribution of the explosion-proof cover was analyzed, and the kinematics behavior of the explosion-proof door under the impact load was simulated. The results show that, under the maximum impact load of 0.9 MPa, the new explosion-proof door can meet the impact resistance mechanical properties and has the ability of reuse. The stable operation of the explosion-proof door is restrained by the limiting mechanism, which can ensure the reliable pressure relief and reset action. Combined with the automatic control design, the new explosion-proof door can be reset quickly, continuously and effectively.

• 单位
  煤矿灾害动力学与控制国家重点实验室; 中国矿业大学（北京）; 合肥工业大学