进而提出热害矿井主要巷道的合理断面形式和永久支护形式。
And then, the rational form of section and permanent support of primary tunnel in high-temperature mine is put forward.
理论分析说明，巷道围岩的渐进破坏主要是岩体强度衰减和蠕变性质影响的结果。
Theoretical analysis shows that the progressive failure of the surrounding rock of opening is mainly caused by strength attenuation and creep mass.
结果表明巷道围岩的损伤主要与地应力有关。
The result shows that the damage of rock surrounding tunnel mainly depends on the natural stress.
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