The gasification face development rate of the test coal changes gently in underground gasification process, which indicates that the underground gasification of lean coal has high stability.
气化工作面扩展速率在供风点附近出现最大值，变化平稳，瘦煤地下气化具有较高的稳定性。
On the basis of the burning area moving along the gasification working face, the simple harmonic temperature field in gasification stove is established.
在燃烧区沿气化工作面移动的基础上，建立了周期性简谐式波动的气化炉温度场。
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