厚煤层综放工作面动压影响巷道围岩控制技术研究  

Surrounding Rock Control Technology for Roadways Affected by Dynamic Pressure in Thick Coal Seam Fully Mechanized Caving Face

作　　者：闫鸿淼 YAN Hongmiao(Shuiyu Coal Industry Co.,Ltd.,Shanxi Fenxi Mining Group,Lvliang 032300,Shanxi,China)

机构地区：[1]山西汾西矿业集团水峪煤业有限责任公司,山西吕梁032300

出　　处：《能源与节能》2025年第2期185-187,共3页Energy and Energy Conservation

摘　　要：为实现厚煤层综放工作面动压影响下巷道围岩变形的有效控制,以9303回风巷为研究对象,提出采用“水力压裂卸压+围岩补强”方式控制围岩的变形,并进行了工程应用。依据现场地质条件及9#煤层顶板的岩性特征,设计了水力压裂卸压方案,并结合9303回风巷原支护情况,给出了高预紧力主动支护技术的参数。现场应用后,在邻近的9302工作面回采期间,9303回风巷围岩及支护体系始终保持稳定,未出现锚杆及锚索失效、围岩大变形等情况,9303回风巷顶底板、两帮移近量分别稳定在了348、 390 mm左右,表明现场使用的“水力压裂卸压+围岩补强”措施效果显著,实现了动压影响巷道围岩变形的有效控制。In order to effectively control the deformation of surrounding rock in the roadway under the influence of dynamic pressure in thick coal seam fully mechanized caving face,the 9303 return airway was taken as the research object,and the method of "hydraulic fracturing pressure relief + surrounding rock reinforcement" was proposed to control the deformation of surrounding rock and applied in engineering.Based on the geological conditions on site and the lithological characteristics of the roof of 9#coal seam,a hydraulic fracturing pressure relief scheme was designed,and combined with the original support situation of 9303 return airway,the parameters of high pretension active support technology were provided.After on-site application,during the mining period of the adjacent 9302 working face,the surrounding rock and support system of the 9303 return airway remained stable without any failure of anchor rods and cables,or large deformation of the surrounding rock.The displacement of the roof and floor and two sides of the 9303 return airway remained stable at around 348 and 390 mm,respectively,indicating that the "hydraulic fracturing pressure relief + surrounding rock reinforcement" measures used on site had significant effects and achieved effective control of the deformation of the roadway surrounding rock affected by dynamic pressure.

关 键 词：综放工作面 动压巷道 卸压方案 高预紧力 

分 类 号：TD353[矿业工程—矿井建设]