摘要
为研究复杂地质条件下的围岩稳定性,采用FLAC3D程序对沪-蓉高速公路西线段龙潭特长深埋隧道进行计算模拟,从围岩的孔隙水压力分布、应力场、位移场及塑性区4个方面进行分析讨论,并将计算结果与监测结果进行对比,验证了计算结果的可靠性.结果表明:在具有裂隙发育、高地应力复杂地质条件下,目前的支护方式和强度基本满足工程安全运营的需要,但应做好防渗排水工作,在地下水丰富地段,可以采取灌浆措施控制底板下一定范围内塑性区的发展.
In order to study the stability of surrounding rock with complex geological condition, the program FLAC^3D was used to simulate the Longtan long tunnel which lies in west segment of Shanghai-Chengdu speedway. By analyzing the characters of porewater pressure distributions, stress field, displacements and plastic zones of rock mass, and contrasting the computed result with monitor result, the reliability of computed result was verified. The results show that the supporting way and strength are basically reasonable in the complex geological condition with growing fissure and high crustal stress. But the work of antiseepage and water drain must be done. In the water-rich zone, grouting measure can control the growing of internal plastic zones in a specific range.
出处
《采矿与安全工程学报》
EI
北大核心
2006年第3期268-271,共4页
Journal of Mining & Safety Engineering
