基于松动圈测试的煤巷围岩分类及支护评价  

Classification of Roadway Surrounding Rock and Supporting Evaluation Based on Loose Circle Theory

作　　者：杨睿[1] 

机构地区：[1]山东科技大学土木工程与建筑学院,山东青岛266590

出　　处：《工程建设与设计》2016年第7期93-95,共3页Construction & Design for Engineering

摘　　要：松动圈是进行围岩分类及支护优化的重要依据。为了更加深入地了解某深井巷道围岩的分类情况,结合其存在地压大、岩体塑性大以及煤层具有强烈冲击倾向性等特点,应用DYTJ20型岩层探测记录仪对该深井工作面回采巷道进行了松动圈测试,初步确定了其松动圈大小,并根据松动圈理论对其进行围岩分类,进而对回采巷道的支护方案作出科学评价。Loose circle is the important basis of classification of roadway surrounding rock and supporting optimization. In order to deeply know about the classification situation of roadway surrounding rock in a deep well, combined with its characteristics of big ground pressure,large plasticity of rock mass and strong impact tendency of coal seam, the extent of the loose circle was measured with the DYTJ20 strata detection recorder in the two gateways of the coal face in the deep well. Therefore, the size of loose circle was preliminarily determined. Then the supporting scheme of gateway has been made scientific evaluation and the surrounding rock has been classified according to the loose circle theory.

关 键 词：深部开采 松动圈 围岩分类 支护评价 

分 类 号：U452.12[建筑科学—桥梁与隧道工程] TD263.53[交通运输工程—道路与铁道工程]