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根据红石湾煤矿井筒高膨胀粘土层变形破坏状况,多方位分析了其变形破坏机理,选择了与高膨胀粘土层性状和矿压环境相耦合的“锚网喷索+注浆+反底拱+U29型钢棚”控制技术方案,并开发出了适用于高膨胀性粘土层的专用注浆材料及普通锚索的专用注浆工具,确保了井筒高膨胀粘土层的有效控制,并为类似井筒高膨胀粘土层的有效控制积累了经验及借鉴。
According to the deformation and failure status of the high expansive clay layer in the wellbore of Hongshiwan coal mine, the mechanism of deformation and failure is analyzed in many directions, and the combination of the characteristics of the high expansive clay layer and the rock pressure environment is selected: grouting + grouting + Arch + U29 steel shed "control technology program, and developed for high expansive clay layer of special grouting material and ordinary grouting cable grouting tools to ensure effective control of wellbore high expansive clay layer, and Similar experiences of wellbore high expansive clay accumulated experience and reference.