深厚表土层井壁出水注浆加固技术研究
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摘要
针对张集煤矿副井在井深266～290m接茬处出现井壁出水现象,进行了井壁出水特征和出水机理分析。在井壁出水情况、深厚表土层地质条件及井壁受力分析的基础上,提出了采用壁间和壁后注浆相结合的注浆方案。为尽量减少注浆活动对井壁的扰动,井壁注浆采用诱导注浆和单孔少注、群孔多注的注浆方式,并对注浆顺序进行了设计;然后制定了注浆参数、施工工艺流程和注浆结束标准。通过工程实践证明,注浆后井壁承受的附加应力得到缓释,井壁无渗水,井筒涌水量为0m~3/h,说明此注浆方案能够有效地解决深厚表土层井壁出水问题。
According to the phenomenon of shaft lining water gushing in deep 266 ～ 290 m joint of Zhangji Coal Mine auxiliary shaft,the shaft lining water gushing characteristics and water gushing mechanism were analyzed. According to the situation of shaft lining water gushing,geological conditions of deep and thick overburden,and on the basis of shaft lining force analysis,a grouting scheme was proposed combining with grouting and grouting behind the wall; in order to reduce the disturbance to the shaft lining of grouting activities as far as possible,the grouting mode of inducement grouting and single hole small injection,group hole multi-injection were used,and the order of grouting was designed; then,the grouting parameters,construction process and grouting finish standard were developed. According to engineering practice proves,the added stresses of shaft lining were released after grouting,shaft lining no seep water,the shaft lining water gushing was 0 m~3/h,which indicated that this grouting scheme had effectively solved the problem of the shaft lining water gushing in deep and thick overburden.
According to the phenomenon of shaft lining water gushing in deep 266 ～ 290 m joint of Zhangji Coal Mine auxiliary shaft,the shaft lining water gushing characteristics and water gushing mechanism were analyzed. According to the situation of shaft lining water gushing,geological conditions of deep and thick overburden,and on the basis of shaft lining force analysis,a grouting scheme was proposed combining with grouting and grouting behind the wall; in order to reduce the disturbance to the shaft lining of grouting activities as far as possible,the grouting mode of inducement grouting and single hole small injection,group hole multi-injection were used,and the order of grouting was designed; then,the grouting parameters,construction process and grouting finish standard were developed. According to engineering practice proves,the added stresses of shaft lining were released after grouting,shaft lining no seep water,the shaft lining water gushing was 0 m~3/h,which indicated that this grouting scheme had effectively solved the problem of the shaft lining water gushing in deep and thick overburden.
引文
[1]李万峰.深厚表土层冻结井筒出水原因分析及防治[J].建井技术,2014,35(S1):21-25.
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[9]林东才,魏夕合.义桥煤矿立井井筒涌水机理与注浆封堵技术[J].煤矿安全,2012,43(3):34-37.
[10]浮绍礼,郭!明,邢文平.巨厚砂岩含水层单层井壁井筒高效注浆堵水技术及其应用[J].煤矿安全,2016(4):174-176.
[11]任强,高伟.红庆梁煤矿冻结井筒壁间注浆时机研究[J].煤炭工程,2014,46(10):106-108.
[12]夏红春,汤美安.表土层注浆加固法防治井壁破裂的机理及应用[J].采矿与安全工程学报,2009,26(4):408-411.
[2]张建国,姜振泉.破裂井壁大流量涌水治理措施[J].煤炭技术,2015,34(1):176-178.
[3]姚直书,薛维培,陈廷学.深厚冲积层钻井井壁渗漏水机理和注浆技术探讨[J].煤炭科学技术,2015,43(S1):1-4.
[4]姚直书,王再举,程桦.冻结壁融化期间井壁受力变形分析与壁间注浆机理[J].煤炭学报, 2015, 40(6):1383-1389.
[5]刘志强,王飞,郭强.深厚表土层井壁破裂机理及防治技术研究进展[J].煤炭科学技术,2011,39(4):6-10.
[6]高杰,王在泉.水位下降诱发深厚表土层井壁的附加应力研究[J].地下空间与工程学报,2009,5(5):873-877.
[7]盛天宝.深厚冻结井壁壁间前注浆机理与应用[J].煤炭学报,2009,34(7):912-916.
[8]王莹莹,李泽荃.立井井筒基岩段壁后防水注浆技术[J].煤炭工程,2012,44(1):29-30.
[9]林东才,魏夕合.义桥煤矿立井井筒涌水机理与注浆封堵技术[J].煤矿安全,2012,43(3):34-37.
[10]浮绍礼,郭!明,邢文平.巨厚砂岩含水层单层井壁井筒高效注浆堵水技术及其应用[J].煤矿安全,2016(4):174-176.
[11]任强,高伟.红庆梁煤矿冻结井筒壁间注浆时机研究[J].煤炭工程,2014,46(10):106-108.
[12]夏红春,汤美安.表土层注浆加固法防治井壁破裂的机理及应用[J].采矿与安全工程学报,2009,26(4):408-411.