1.Department of Mining and Design, Tiandi Science and Technology Company Limited, Beijing , China;2.Mining Branch, China Coal Research Institute, Beijing , China

为增强液压支架适应性、有效应对日益复杂的围岩动态变化,提出综采工作面液压支架-围岩自适应支护控制方法。基于变论域模糊控制方法建立液压支架-围岩刚度、强度及稳定性耦合自适应控制策略,基于MSP430处理器开发自适应控制装置,并进行实验室试验。试验结果表明:控制装置可精确获取支架状态,能够根据外载变化自动调节液压支架的安全阀开启压力、初撑力及立柱、平衡千斤顶压力,保证液压支架处于合理支护状态,控制误差不大于3%。该方法可大幅提高液压支架的适应性,有助于保持工作面液压支架群组-围岩系统的稳定支护状态。

In order to the adaptability of the hydraulic support and to effectively deal the dynamic variation of the daily complicated surrounding rock, a self adaptive support control method of the hydraulic support-surrounding rock in the fully mechanized coal mining face was provided. Based on the variable domain fuzzy control method, a rigidity, strength and stability coupling self adaptive control strategy of the hydraulic support-surrounding rock was established. Based on the MSP430 processor, the self adaptive control device was developed and a lab experiment was conducted. The experiment results showed that the control device could accurately get the status of the support, could automatically adjust the safety valve open/close pressure, initial setting force and the pressure of the cylinder and balance jack of the hydraulic support according to the external load variation and could ensure the hydraulic support in a rational support status. The control error would not over 3%. The method could highly improve the adaptability of the hydraulic support and would be favorable to keep the stable support status of the hydraulic support group - surrounding rock system in the coal mining face.