未稳沉采煤沉陷地超前复垦时机的计算模型

Proper time model for pre-reclamation of unstable subsidence

为了科学地确定超前复垦的时机,研究了开采方法、地下水位、表土剥离厚度等影响因素,以开采沉陷学中的概率积分法为理论基础,建立了复垦时机计算的数学模型,通过实例验证,计算得T(复垦时机)≤47 d,通过与开采44 d后走向主断面上地表点的下沉情况对照及考虑季节因素,认为自开采47 d内可以进行复垦,也能够满足工程的需要.

The proper time model of pre-reclamation was built using probability integration model and influence factors such as exploitation method, under water level and thickness of peeling off surface soil, etc.. Through the experiment result, the counting result is T （Reclamation time） ≤ 47 d. Compared with subsidence situation of surface points on the chief profile after 44 d of the mining and on the reference of the seasons elements, the reclamation action could get started after 47 d since the mining to meet the demand of the project.