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本文在研究实验资料和已知理论的基础上对西顿巴斯各矿井回采工作面顶板的导水裂隙带发育情况进行了分析。 在《巴夫洛格勒》煤炭联合公司,用测量方法确定了“纪念”矿井625和627采煤工作面同含水层接触处的导水裂隙松散值为0.0013—0.005。根据乌克兰共和国科学院冶金地质技术研究所的资料,近于极限应力状态下的西顿巴斯矿井岩层的松散值也在这个范围内。因而可以使解决确定回采工作而上方导水裂隙带的课题归结为确定回采工作面上方极限外变形带的高度。 回采工作面上方岩石的楔形平面变形应力状态是依据[2]来论证的。但是要适用于西顿巴斯矿井还需要修正边界条件;考虑非弹性变形带岩层膨胀《松散》,以及回采工作面推进速度的影响,这是非常重要的[3]。
Based on the study of experimental data and known theory, the development of hydraulic conductivity fractured zone in the roof of the Sidon Bath mining face is analyzed. At Pavlograd Coal Union, the looseness of water-conducting fractures at the contact points of 625 and 627 coal mining faces with aquifers in the “Memorial” Mine was determined by the measurement method to be 0.0013-0.005. According to the Institute of Metallurgy and Geotechnical Sciences, Academy of Sciences of the Republic of Ukraine, the looseness of the Sidon-Bath coal mine near the ultimate stress is also within this range. Therefore, the task of solving the problem of determining the mining operation above the water-conducting fracture zone can be attributed to the determination of the height of the outer deformation zone above the upper working face. The wedge plane deformation stress state of the rock above the mining face is verified based on [2]. However, it is necessary to apply boundary conditions to the Sidon Bath Mine. It is very important to consider the “looseness” of non-elastic deformation zone and the influence of propulsion speed of mining face [3].