Abstract: Microcrystalline ceramics is a kind of high performance materials with wear resistance， corrosion resistance and temperature resistance.They can be used in the environment with wear，corrosion and high temperature at the same time， and their performance is better than that of metal and organic materials.However， the significant deficiency of microcrystalline ceramics lies in the poor impact toughness， which is a brittle material. It is due to the formation of structural microcracks between grains caused by the sintering process of microcrystalline ceramics. When the microcrystalline ceramics are subjected to tensile and impact， it is easy to produce structural microcracks "instability" and fracture.Although advanced ceramic processing technology helps to improve the impact toughness of microcrystalline ceramics， its application is limited due to manufacturing cost.A prestressed metal microcrystalline ceramic composite was invented，which increased the impact strength of microcrystalline ceramics by 20~80 times.The research and development principle of prestressed metal microcrystalline ceramic composite lining plate was analyzed， and the mathematical model of prestress and the length of microcrystalline ceramic lining plate was established through experimental analysis， so as to provide a method to calculate the design parameters of the prestressed metal microcrystalline ceramic composite lining plate.This type of ling plate is applied to Xigou Coal Mine， Shaanxi Jianxin Coal chemical Co.， Ltd.， Mengda Mining Co.， Ltd.， Wushen Banner and other mining enterprises，the installation technical process of lining plate is described in detail， and the ideal results is achieved.The study results show that prestressed metal microcrystalline ceramics technology has a broad application prospect in mines， and can be further popularized and applied in the production of prestressed metal microcrystalline ceramics composite lining plate and pipe，which is helpful to solve the shortage of microcrystalline ceramics limited in application field due to poor impact toughness.

Key words: prestressed metal microcrystalline ceramic composite lining plate, permeability resistance, impact resistance, wear resistance, corrosion resistance