采矿与安全工程学报2011，Vol.28Issue(1)：115-121,7.
井筒壁后注浆质量反射波法检测技术
Detection Technology by Reflection Wave for Backwall Grouting Quality of A Vertical Shaft
摘要
Abstract
Many abnormal problems during the construction and application of the vertical shaft can be met under the condition of the thick unconsolidated layers. For finding out this problem, the reflection wave technology is used to evaluate the quality of backwall grouting. The loop and longitudinal surveying lines along the wall of shaft are arranged by reflection wave method. According to different seismic wave attributes, such as the velocity of high frequency reflection wave, amplitude, and frequency, the abnormal range on the wall or under the wall can be forecast. The quality and effect of back wall grouting can be acquired though detection pre- and post-grouting. The researching results of the new and old shaft survey show that the offset selected should be 0.6～0.8 m, trace interval 0.2～0.4 m, and shot interval 0.2 m. According to the velocity of wall surface, integration frequency and characteristics of the seismic wave, the structure of wall surface and inside can be assessed qualitatively and semi-quantitatively. During the detection of the quality of back wall grouting, the reflection wave method has a significant effect on inspection. So it has many advantages, for example, little interference factor, easy operation, and accurate delineation of abnormal areas.关键词
壁后注浆/质量检测/反射波法/立井井筒Key words
backwall grouting/ quality detection/ reflection wave method/ vertical shaft分类
矿业与冶金引用本文复制引用
张平松,郭立全..井筒壁后注浆质量反射波法检测技术[J].采矿与安全工程学报,2011,28(1):115-121,7.基金项目
国家重点基础研究发展计划(973)项目(2006CB202209) （973）
