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通过对松软底板回采工作面的矿压观测,我们认为,管理好松软底板是确保正常生产条件的关键问题之一。为了进一步探索有效的控制方法,笔者就开滦范各庄矿第十一煤层回采工作面底板矿压显现情况,来浅析煤层底板岩体在初始原应力状态下,受采动影响而发生变形、破坏、膨胀的机理,并提出相应的管理措施。 一、概述 开滦范各庄矿第十一煤层底板多为粉砂岩,底板岩石单向抗压强度平均为206.8
Through the observation of the rock pressure of loose floor mining face, we believe that managing a soft floor is one of the key issues to ensure normal production conditions. In order to further explore the effective control methods, the author of the Kailuan Fangezhuang eleventh coal seam mining face floor pressure shows the situation, to analyze the initial floor of the rock floor in the initial state of stress, affected by the mining deformation , Destruction, expansion of the mechanism, and put forward the corresponding management measures. First, an overview of Kailuan Fangezhuang eleventh coal seam floor mostly siltstone, floor rock unidirectional compressive strength average 206.8