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在砂砾石层河床上采用的防渗抗冲形式受到技术、设备和资金等多方面的制约。结合河南省南阳市内乡县湍河第三级橡胶坝工程,在砂砾石层河床上采用水平钢筋混凝土铺盖方案、水平铺盖+高喷灌浆方案、水平铺盖+直立混凝土防渗墙方案、水平铺盖+斜混凝土防渗墙方案、深基础方案进行方案比选,最终确定斜板防渗墙方案能够较好地解决该类问题。
The seepage-proofing and impacting methods used in the gravel bed are subject to many aspects such as technology, equipment and capital. Combined with the third grade rubber dam of Neijiang County, Nanyang City, Henan Province, horizontal reinforced concrete covering plan, horizontal covering plan and high-pressure grouting plan, horizontal covering and standing concrete impervious wall plan are adopted in sand and gravel bed, + Oblique concrete cutoff wall program, the deep foundation program for comparison and selection of programs, and ultimately determine the plank inclined wall cutoff wall solution can better solve this problem.