云雾山岩溶隧道超前探测及处治方法研究

发布时间：2018-11-01 13:49

【摘要】：伴随着我国基础设施的建设，在岩溶地区修建的隧道越来越多。由于复杂的地质条件，岩溶区修建隧道在国内外都是个技术难题。本文在总结国内外岩溶隧道施工现状的基础上，结合云雾山隧道具体情况，对岩溶隧道超前探测技术及处治方法进行了研究。本文通过对岩溶隧道溶腔溶洞探测综合技术的研究,采取地质法、物探法(TSP203法、地质雷达法、红外探水法等)和钻探法(超前深孔钻探、超长炮孔钻探)等综合方法进行超前地质探测，成功判明溶洞的边界、范围、水量、水压、水质等参数，由降雨量和同期洞内溶腔涌水量观测统计，采用水均衡法预测出最不利条件下的溶腔涌水量，，为制定溶腔处理方案降低施工风险提供科学依据。通过改进空口管、比选机械及钻具配套和钻孔工艺，针对不同填充类型溶腔使用不同型号的配套机械，实现带水钻探作业，使高压、富水、充填溶腔钻机钻进效率得到突破。通过对钻机钻进过程中探测的不同围岩的变化，以及钻孔角度、长度等参数分析，较准确的判释前方溶洞发育的地质特征。研究了释能降压施工技术，对溶腔内填充物性质、地表水文与溶洞的连通性等地质特性分析后，对溶洞溶腔采取爆破直接揭示，达到了降低水压、排除突泥突水风险的效果，该技术能快速通过高压、富水、充填溶腔。通过对云雾山隧道施工所遇到的岩溶进行分类，提出了分类整治的方针，形成了系统和科学的相应成套处理模式和技术方案。云雾山隧道施工中通过运用综合超前探测技术和溶洞处治技术，安全地通过了隧道岩溶地段。本文的研究结果可为岩溶地区隧道施工提供参考。
[Abstract]:With the construction of infrastructure in China, more and more tunnels are built in karst areas. Due to complicated geological conditions, tunnel construction in karst area is a technical problem both at home and abroad. On the basis of summing up the present situation of karst tunnel construction at home and abroad and combining with the concrete situation of Yunwushan tunnel, this paper studies the advanced detection technology and treatment method of karst tunnel. In this paper, through the research on the comprehensive technology of karst tunnel solution cavity cave detection, geological method, geophysical exploration method (TSP203 method, geological radar method, infrared water detection method, etc.) and drilling method (advanced deep hole drilling, etc.) are adopted. Comprehensive methods such as ultra-long hole drilling) are used to carry out geological exploration ahead of time, and the parameters such as boundary, range, water volume, water pressure and water quality of the karst cave are successfully determined. The observation and statistics of the rainfall and the amount of water flowing into the cavity in the same period are carried out. The method of water balance is used to predict the water quantity of the dissolving cavity under the most unfavorable conditions, which provides a scientific basis for the formulation of the treatment scheme of the cavern and the reduction of the construction risk. By improving the hole pipe, comparing the selection machine and drilling tool matching and drilling technology, different types of matching machinery are used for different filling types of cavity, and the drilling efficiency of high pressure, rich water and filling cavity rig can be broken through by using different types of matching machinery. By analyzing the variation of different surrounding rock, the angle and length of drilling hole during drilling, the geological characteristics of the karst cave in front of the drilling machine are accurately determined. The construction technology of releasing energy and reducing pressure is studied. After analyzing the geological characteristics such as the properties of the filling in the cavity, the connectivity between surface water and the cave, the blasting is adopted to reveal the cavern directly, which can reduce the water pressure and eliminate the risk of water inrush. This technique can quickly pass through high pressure, rich water and fill cavity. Based on the classification of karst in Yunwushan tunnel construction, this paper puts forward the policy of classification and remediation, and forms a systematic and scientific complete set of treatment mode and technical scheme. In the construction of Yunwushan tunnel, the comprehensive advanced detection technology and the karst cave treatment technology are used to safely pass through the karst section of the tunnel. The results of this paper can provide a reference for tunnel construction in karst area.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U452.11

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