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随着公路建设规模的扩大,在贵州岩溶山区边坡及滑坡出现的数量越来越多,治理难度也越来越大。如何用一种经济、施工简便的方法解决贵州岩溶山区滑坡治理问题,成为贵州公路建设中亟待解决的一个重要课题。文章对化学灌浆法在贵州某高速公路滑坡治理中的运用进行试验探索,解决了地层能否灌浆处理;地层灌浆处理时,需要何种浆液材料;采用多大的压力,灌入多少浆液等问题。并在工程治理中选取75个孔做灌浆试验。根据试验确定了灌浆扩散半径、孔距、排距等参数。通过探井开挖试验、标准贯入试验、声波波速测试等检测方法进行灌浆治理效果的检测评价,从检测结论可知,该方法具有很好的效果。为了比较其经济性,还作了3种滑坡治理方案的经济技术对比。从对比结果可知,化学灌浆技术具有很强的经济优势。因此,该技术在岩溶山区的滑坡治理中有很好的适用性及应用前景。
With the expansion of highway construction, more and more landslides and landslides occur in Guizhou karst mountainous areas, and the difficulty of governance is also increasing. How to solve the problem of landslide control in karst mountain area of Guizhou by using an economical and convenient construction method has become an urgent issue to be solved urgently in Guizhou highway construction. The article explores the application of chemical grouting method in the landslide control of a freeway in Guizhou Province, and solves the problems of whether the strata can be grouted, what kind of grout materials are required for grouting, how much pressure is applied and how much slurry is poured in. And select 75 holes in the project management do grouting test. Based on the experiment, the grouting diffusion radius, hole distance and row spacing parameters were determined. Through the exploration drilling test, standard penetration test, sonic wave velocity test and other detection methods for the detection and evaluation of grouting treatment effect, we can see from the test results that this method has a good effect. In order to compare its economy, but also made three kinds of landslide control program of economic and technological comparison. From the comparison results we can see that chemical grouting technology has strong economic advantages. Therefore, this technology has very good applicability and application prospect in landslide control in karst mountain area.