高地应力–高水压下隧道突水模型试验系统的研制及应用

doi:10.13722/j.cnki.jrme.2017.0384

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摘要

为研究高地应力、高水压下岩溶隧道突水灾害演化过程及破坏特征，研制适用于高地应力、高水压下隧道突水模型试验系统，由地应力加载系统、水压加载系统、多元信息监测系统、主箱体等组成。该系统的主要特点是能同时提供高地应力和高水压，地应力加载系统峰值压力达1 000 kN，长时保压；水压加载系统可提供最大水压值50 MPa，梯度可控。此外，主箱体为整体框架结构，承压强度高、密封性好、可视化；反力架可左右滑动，增大了试验空间；所有部件之间采用高强度螺栓连接，可拓展性强；多元信息监测系统实现对试验数据的实时同步采集。以歇马隧道YK7+400～YK7+445里程段为研究对象，采用自主研制的流固耦合相似材料，设计了高地应力、高水压下隧道掌子面前方溶洞突水模型试验，对试验数据进行了分析、总结，揭示了在此类复杂地质条件下隧道施工围岩应力场、位移场及渗流场的时空变化规律，掌握了隧道突水前兆信息。试验结果表明该系统稳定可靠，该研究方法和结果对同类型地下工程的研究具有指导意义。

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	杨为民
	王浩
	杨昕
	张波
	杨磊
	房忠栋
	王美霞

关键词 ：岩石力学, 高地应力, 高水压, 模型试验系统, 多元信息, 突水

Abstract：

In order to study the evolution process and failure characteristics of water inrush in Karst tunnel under， high-geostress and high hydraulic pressure，a model test system for water inrush in high-geostress and high hydraulic pressure tunnels was developed，the testing system composed of a geostress loading system，a hydraulic loading system，a multiple information monitoring system and a main box. The main features of the system can provide both high-geostress and high hydraulic pressure，the geostress loading system can provide peak pressure to 1 000 kN and hold pressure for a long time，the hydraulic loading system can provide maximum hydraulic pressure to 50 MPa and the hydraulic gradient can be controlled. In addition，the main box is an integral frame structure，high bearing strength，good tightness，visualization；the reaction frame can slide left and right，and the test space is enlarged；the all parts are connected by high strength bolts，high scalability；multiple information monitoring system can be used to collect the test data in real time. In the YK7+400–YK7+445 section of Xiema tunnel was taken as an example，the solid-fluid coupling similar materials were developed independently，the water inrush model test of karst cave in front of working face of high-geostress and high hydraulic pressure tunnels was designed，the experimental data were analyzed and summarized，the spatio-temporal change rules of stress field，displacement field and seepage field of tunnel surrounding rock under the complex geological conditions were revealed，the information of water inrush in tunnel were mastered. Test results showed that the system was stable and reliable，the research methods and results will instruct similar engineering.

Key words： rock mechanics high-geostress high hydraulic pressure model test system multi-information water inrush

引用本文:

杨为民，王浩，杨昕，张波，杨磊，房忠栋，王美霞. 高地应力–高水压下隧道突水模型试验系统的研制及应用[J]. 岩石力学与工程学报, 2017, 36(S2): 3992-4001.
YANG Weimin，WANG Hao，YANG Xin，ZHANG Bo，YANG Lei，FANG Zhongdong，WANG Meixia . Development and application of model test system for water inrush in high-geostress and high hydraulic pressure tunnels. , 2017, 36(S2): 3992-4001.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2017.0384 或 https://rockmech.whrsm.ac.cn/CN/Y2017/V36/IS2/3992

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