干河煤矿清理斜巷K2灰岩高压含水层预注浆施工技术

Pre-grouting Technology in High-pressure Water-bearing Stratum of K2 Calcareous Rock in Cleaning Slanting Lane of Ganhe Coal Mine

摘要:

霍州煤电集团有限责任公司干河煤矿主井清理斜巷需穿越K2灰岩含水层，其含水层带压达5 MPa，水文地质条件复杂。主要介绍了对高压含水层的注浆堵水工艺，为巷道的安全掘进、防止巷道突水提供了可行的借鉴经验。

Abstract:

The slanting lane for cleaning up the main shaft of Huozhou coal electricity group Limited company was planed to pass through the water-bearing stratum of K2 calcareous rock, where the hydrogeological conditions is complicated and its water-bearing stratum belt pressure reaches 5 MPa. To avoid water bursting, this paper introduces the technology of grouting in high-pressure water-bearing stratum, which provides feasible experience for tunneling security.