摘要
在工程中因注浆钻孔止浆(止水)套管封固质量不合格经常出现止浆(止水)套管的失效现象。为保证和提高套管封固质量,要求注浆堵水钻孔要尽量选择在坚硬完整无水岩层内开孔;并从增加止浆(止水)套管的有效封固长度,选择安全的套管底口位置,使用较好的注浆封固材料,提高止浆(止水)套管的材质和丝扣加工质量,并改进套管封固工艺以增加止浆(止水)套管的阻力等。
In the engineering, the unqualified sealing quality of grouting boles often caused the failure of groutingcasing. To guarantee and improve the casing cementing quality, it is need to layout the grouting borehole in the hardand anhydrous strata; and increase the length of effective sealing sleeve of the grouting casing, choose the safe locationof the casing pipe bottom, use good grouting sealing material, improve the grouting material （seal） and threadmachining quality , and improve the casing cementing techniques to increase the grouting pipe resistance etc.
出处
《山东煤炭科技》
2014年第7期148-150,共3页
Shandong Coal Science and Technology
关键词
注浆堵水
钻孔
止浆
套管
封固材料
阻尼器
失效
grouting for stopping up water drilling preventing - grout casing pipe sealing materials damper failure
