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前 言 水电工程中,如何解决建筑在砂砾层上的建筑物的防渗有很多途径,其中用比较便宜的木质素材料固结砂层以达到防渗目的,被认为是一种较好的方法。目前这种方法在一些工程中已被应用。本试验是利用该材料在现场中灌注一个直径1.2米、深度4～5米的园井,然后开挖,直观观察浆液在砂层中的扩散情况,砂体固结密实度以及固砂体的防渗性能,并进行固砂体的各项物理性能试验,以论证铬木素灌注砂层的可能性和可靠性。同时,试验也着重对砂层灌注工艺方面进行一些探讨。在现场试验前,做了一些室内试验,为现场灌注准备必要的资料,以保证灌注取得预期的效果。
Preface In hydropower project, there are many ways to solve the seepage prevention of buildings constructed on the gravel layer. It is considered a better method to use the cheaper lignin material to consolidate the sand layer to prevent seepage. At present, this method has been applied in some projects. This test is to use the material in the field with a diameter of 1.2 meters, 4 to 5 meters depth of the well, and then excavation, visual observation of the slurry diffusion in the sand, sand consolidation density and sand body Anti-seepage performance, and the sand body of the physical performance tests to demonstrate the possibility of chromium lignin sand pouring and reliability. At the same time, the experiment also focuses on the sand pouring process for some discussion. Before the on-site test, some laboratory tests were done to prepare the necessary information for on-site perfusion to ensure the desired effect of perfusion.