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对Knothe时间函数参数的影响进行了分析,在Knothe时间函数未达到收敛以前,对于同一时间点而言,c值越小,Knothe时间函数值也越小,c值越大,Knothe时间函数取值也相对越大,特别是在t∈[0,0.2]时,不同的参数对Knothe时间函数值影响较大。根据开采沉陷地表移动变形的一般规律和采空区达到充分采动时的尺寸,建立了一种新的Knothe时间函数求参模型——概率积分求参法。通过对比分析平安煤矿、富力煤矿和孙村煤矿的实测c值与采用该模型的计算c值,验证了该模型的正确性;并以29401工作面上方走向观测线的多期实测下沉数据为例,对该模型进行了实例应用,通过对比分析实测数据和预测结果,进一步证实了本文所建立的Knothe时间函数求参模型的实用性和可靠性。
The influence of Knothe time function parameters is analyzed. Before the Knoe time function does not reach convergence, for the same time point, the smaller the value of c is, the smaller the value of Knothe time function is, and the larger the value of c is, the value of Knothe time function Also relatively larger, especially when t ∈ [0,0.2], different parameters have a greater impact on the Knothe time function. According to the general law of the surface deformation of the mining subsidence and the size of the mined-out area when the mined-out area is fully explored, a new Knoe time function seeking model - probability integral method is established. By comparing the measured c value of Ping’an Mine, R & F Mine and Suncun Coal Mine with the calculated value of c using this model, the correctness of the model is verified. The observed data of sinking over the observation line above 29401 face are The example is applied to the model. By comparing the measured data with the predicted results, the practicality and reliability of the Knoe time function established in this paper are further confirmed.