摘要
针对寺家庄煤矿地应力大、15~#煤层顶板岩层厚度大、硬度高的特点,提出采用水力压裂顶板的方法控制巷道围岩大变形。在15110回风巷选择400 m试验段,并在距离工作面100 m和200 m位置布置两个测站用于监测巷道围岩变形量及煤体应力变化。现场监测数据显示:两个测点顶板下沉量最大值分别为52 mm和66 mm,底鼓量最大值分别为144 mm和72 mm,两帮移近量最大值分别为165 mm和175 mm,且煤体并无明显应力集中区域。
In view of the characteristics of large ground stress,large thickness and high hardness of roof in the 15#coal seam,the method of hydraulic fracturing roof is proposed to control the large deformation of roadway surrounding rock.?The test section of 400 m is selected in the 15110 return air roadway,and two stations are arranged at 100 m and 200 m away from the working face to monitor the deformation of surrounding rock and the change of coal stress.The on-site monitoring data shows that the maximum roof subsidence of the two measuring points is 52 mm and 66 mm respectively,the maximum bottom drum volume is 144 mm and 72 mm respectively,the maximum approaching values of the two sides are 165 mm and 175 mm respectively,and there is no obvious stress concentration area in the coal body.
作者
席冰冰
Xi Bingbing(Huayang New Materials Technology Group Co.,Ltd.,Shanxi Yangquan 045000)
出处
《山东煤炭科技》
2021年第11期59-62,共4页
Shandong Coal Science and Technology
关键词
高地应力
坚硬
水力
压裂
high ground stress
hard
hydraulic power
fracturing
作者简介
席冰冰(1986-),男,山西襄汾人,2012年毕业于中国矿业大学采矿工程专业,采矿工程师,现从事煤矿安全监管工作。
