CAJ | 학술논문

南水北调中线工程禹州长葛段煤矿采空区覆盖层灌浆处理中，由于前期地质资料不足，需要采用取芯技术补充勘测以检查注浆质量。为了解决取芯施工中存在的工作量大、岩芯采取率设计要求高、工期紧迫等问题，采取了绳索取芯钻孔技术。介绍了该技术的基本工艺流程和施工中应注意的问题，并给出了特殊情况的处理措施，如在易倾斜岩层中钻进时防斜以及难以钻进时先进行灌浆处理再钻进等。工程实践表明，绳索取芯钻孔工艺提高了工效、降低了劳动强度且缩短了工期。为水电工程及其他行业类似工程钻孔施工提供了参考。
남수북조중선공정우주장갈단매광채공구복개층관장처리중，유우전기지질자료불족，수요채용취심기술보충감측이검사주장질량。위료해결취심시공중존재적공작량대、암심채취솔설계요구고、공기긴박등문제，채취료승색취심찬공기술。개소료해기술적기본공예류정화시공중응주의적문제，병급출료특수정황적처리조시，여재역경사암층중찬진시방사이급난이찬진시선진행관장처리재찬진등。공정실천표명，승색취심찬공공예제고료공효、강저료노동강도차축단료공기。위수전공정급기타행업유사공정찬공시공제공료삼고。
In the grouting treatment of overburden in coal mined-out area of Yuzhou to Changge section of Middle Route Pro-ject of South to North Water Diversion, due to lack of pre-stage geological data, the coring technology should be adopted for supplementary survey to check the grouting quality. In order to solve the problems in coring, such as large working load, high co-ring rate and tight construction schedule, the wire line coring was used. The basic technical process and problems in the con-struction that should be paid attention to were introduced. The countermeasures for some special circumstances were provided as well, such as inclining prevention in inclined layer, grouting first and drilling next in the case of difficult drilling. The engineer-ing practice showed that the use of wire line coring improved the working efficiency, reduced the working load and shortened the construction period.