【正文】 ress is larger than vertical stress within 42 m when the working face advances 30 m. 3) The difference between the theoretically calculated principal stress and the results of the servocontrolled perability test can be contrasted. Deformation and perability can be obtained from the floor rock mass. From an example, it is seen that the mudstone and sandstone of coal floor are at an elastic deformation stage. There is no extreme destruction on the relatively fixed floor section with an advancing of working face and there still is a certain ability of water resistance Acknowledgements Here we express our sincere appreciation to director for Zhao Zhenzhong, minister Song Shun of Zhengzhou Coal Industry Group for their help during the course of the sampling. Appreciating Dr. Xi Yantao of China University of Mining and Technology for his help for modification. References： [1] Zhang J C, Zhang Y Z, Liu T Q. Rock Mass Permeability and Coal Mine Water : Geological Publishing House, 1997. (In Chinese) [2] Miao X X, Lu A H, Mao X B, et al. Numerical simulation for roadways in swelling rock under coupling function of water and ground pressure. Journal of China University ofMining and Technology, 2021, 12(2): 120125. [3] Gong P L, Hu Y Q, Zhao Y S, et al. Threedimensional simulation study on law of deformation and breakage of coal floor on mining above aquifer. Chinese Journal of Rock Mechanics and Engineering, 2021, 24(23): 43964402. (In Chinese) [4] Shi L Q, Han J. Floor WaterInrush Mechanism and Prediction. Xuzhou: China University of Mining and Technology Press, 2021. (In Chinese) [5] Jing H W, Xu G A, Ma S Z. Numerical analysis on displacement law of discontinuous rock mass in broken rock zone for deep roadway. Journal of China University of Mining and Technology, 2021, 11(2): 132137. [6] Liu Y D, Zhang D S, Wang Ii S, et al. Simulation analysis of coal mining with topcoal caving under hardandthick strata. Journal of China University of Mining and Technology, 2021, 16(2): 110114. [7] Dun Z L, Gao J M. Mechanics of Elasticity and Its Application in Geotechnical Engineering. Beijing: China Coal Industry Publishing House, 2021. (In Chinese) [8] Xu Z L. A Concise Course in Elasticity. Beijing: Higher Education Press, 2021. (In Chinese) [9] Liu W Q, Miao X X. Numerical analysis of finite deformation of overbroken rock mass in gob area based on Euler model of control volume. Journal of China University of Mining and Technology, 2021, 16(3): 245248. [10] Jiang F X. Rock Pressure and Stress Control. Beijing: China Coal Industry Publishing House, 2021. (In Chinese) [11] Qian M G, Shi P W. Rock Pressure and Stress Control. Xuzhou: China University of Mining and Technology Press, 2021. (In Chinese) [12] Xu N Z, Tu M. The mechanism and control of floor heave of road driving along next goaf of high seam. Journal of Anhui University of Science and Technology (Natural Science), 2021, 24(2): 14. (In Chinese) [I3] Wang W J, Hou C J. Study of mechanical principle of floor heave of roadway driving along next goaf in fully mechanized sublevel caving face. Journal of Coal Science and Engineering, 2021, 7(1): 1317. [14] Zhai X X, Li D Q, Shao Q, et al. Control over surrounding rocks deformation of soft floor and wholecoal gateways with trapezoidal supports. Journal of China University of Mining and Technology, 2021, 15(2): 118123. 中文譯 文： 采場(chǎng)底板巖層應(yīng)力的分析模型及應(yīng)用 摘要： 在分析礦山壓力的基礎(chǔ)上，運(yùn)用彈性理論 建立了煤層底板應(yīng)力分析計(jì)算模型 。通過比較由試驗(yàn)得到的滲透率 應(yīng)變關(guān)系和根據(jù)應(yīng)力應(yīng)變曲線理論計(jì)算的主應(yīng)力兩者的不同 得到煤層底板巖塊的變形量和滲透性。 關(guān)鍵詞： 模型 ；煤層底板；應(yīng)力分布；解析法 1 引言 煤層開采之后，受采動(dòng)影響，煤層頂?shù)装鍘r層的應(yīng)力場(chǎng)將發(fā)生變化，應(yīng)力要進(jìn)行重新分布，其結(jié)果必將造成頂?shù)装鍘r層產(chǎn)生變形、位移甚至破壞，直至達(dá)到新的應(yīng)力平衡 [1]。目前關(guān)于工作面底板巖層應(yīng)力分布規(guī)律的研究，一般大多數(shù)是靠有限元數(shù) 值計(jì)算和相似材料模擬實(shí)驗(yàn) [26]，本文嘗試在彈性力學(xué)的基礎(chǔ)上，應(yīng)用解析的方法對(duì)回采工作面采后底板巖層相對(duì)固定位置處應(yīng)力的分布進(jìn)行了初步探討，并結(jié)合現(xiàn)場(chǎng)實(shí)際資料進(jìn)行了應(yīng)用。如圖 1 所示， 設(shè) 半平 面 體在其邊界的 AB 段上受有強(qiáng)度為 q(