CAJ | 학술논문

保定市王快—西大洋水库综合管理工程渠首引水隧洞位于断层影响带，围岩破碎且富含地下水，裂隙水与地表水水力联系密切。工程实施时充分利用水库放空时机，在引水隧洞取水口采用现浇混凝土形成人工预埋式挡水岩塞；岩塞爆破前采用水泥和水玻璃浆液进行了超前预注浆，成功解决了洞室涌水、围岩破碎等问题，为后期岩塞爆破提供了有利条件。在此基础上，采用毫秒延时起爆双网路、排孔爆破、周边未预裂爆破，取得了理想的爆破效果。实践证明，预埋式岩塞方案可行，超前预注浆及合理的爆破方案是确保引水隧洞掘进及岩塞顺利爆破的关键。
보정시왕쾌—서대양수고종합관리공정거수인수수동위우단층영향대，위암파쇄차부함지하수，렬극수여지표수수력련계밀절。공정실시시충분이용수고방공시궤，재인수수동취수구채용현요혼응토형성인공예매식당수암새；암새폭파전채용수니화수파리장액진행료초전예주장，성공해결료동실용수、위암파쇄등문제，위후기암새폭파제공료유리조건。재차기출상，채용호초연시기폭쌍망로、배공폭파、주변미예렬폭파，취득료이상적폭파효과。실천증명，예매식암새방안가행，초전예주장급합리적폭파방안시학보인수수동굴진급암새순리폭파적관건。
The ancient water diversion tunnel, belong to the integrated management engineering of Wangkuai and Xidayang Reservoir, is located in the fault zone. The surrounding rock is broken and contains rich groundwater. Hydraulic fissure water is closely related to surface water. Making full use of the emptying reservoir, artificial embedded concrete plug retaining water was casted, before the formal program. Using cement and sodium silicate grout, advance grouting was completed before the rock plug blasting. Some problems, such as cavity pours water and surrounding rock crushing, were solved successfully, which provided favorable conditions for later rock plug blasting. Based on this, by adopting double network, millisecond delay detonator, peripheral hole no using pre-splitting blasting, rock ballast treatment without slag collecting pit or buffer pit, the plug blasting was very successful. Practice has proved that embedded rock plug scheme is feasible, and the key to smooth blasting of rock plug and diversion tunnel digging is advance grouting and reasonable blasting scheme.