CCTEG Shenyang Engineering Co. , Ltd.

龙煤集团鸟山煤矿超深立井井深900多米,静压9.0MPa,井下消防、洒水和供水施救管道原设计采用常规减压阀串联减压,每隔100m设置一处减压阀,实际生产运行过程中系统故障频繁,为解决该问题,对鸟山煤矿超深立井管道减压系统进行了改造设计。针对井筒内管道井空间狭小,维修困难的生产现状,该改造设计提出一种井下测压,井上节流控制的深井供水减压改造方案,借鉴国内煤矿实用案例分析,依据井下用水点压力值反馈信号,控制井口出水管电动节流阀开度,确保供水量和用水量平衡,管内水位处于非满流状态,从而达到减小压力的目的,降低管路和阀门的压力等级及成本。减压系统自调试运行以来,系统的可靠性、稳定性增强,故障率降低,具有明显经济效益和可借鉴意义。

The depth of the super-deep vertical shaft in Niaoshan Coal Mine is over meters, the static pressure reaches 9. 0 MPa. The original design applies conventional pressure reducing valves in series to reduce pressure for underground fire fighting, sprinkler and water supply and rescue pipeline, setting a valve for every m, which has brought frequent system failures in the production process. In order to solve the problem, reformation design of pipeline depressurization system is carried out. In response to the production situation of limited space and difficult maintenance of pipelines in the shaft, a deep shaft water supply depressurization renovation plan with underground pressure measurement and surface throttling control. Drawing on practical case analysis in domestic coal mines, based on the feedback signal of underground water point pressure, the electric throttle valve opening of the wellhead outlet pipe is controlled to ensure a balance between water supply and consumption, and the water level in the pipe is in a non full flow state, thus to lower the pressure level and cost of pipelines and valves. Since the commissioning and operation of the depressurization system in June 2021, the reliability and stability of the system have been enhanced, the failure rate has been reduced, and it has significant economic benefits and reference significance.

盛守福.鸟山煤矿超深立井管道减压系统改造设计[J].煤炭工程,2024,56(12):7-11.