坝基混凝土防渗墙与泥皮接触面试验研究

通过对不同厚度的泥皮和不同粗糙程度的混凝土接触面的大型剪切试验研究，得出不同的强度和变形指标，试验结果表明，在同样的泥皮厚度条件下，混凝土接触面越粗糙能够得到较高的强度和变形指标；在相同的接触面粗糙条件下，泥皮厚度越薄越能得到较高的强度和变形指标。对于上述不同试验条件下强度和变形指标产生差异的原因进行分析，试验中考虑泥皮的存在是合适的。

Test study on shear strength between mudcake and impermeable wall

Through large scale shear test study on the contact face between the mudcake with different thicknesses and concrete with different roughnesses, various strength and deformation indices have been obtained. The test results show that under the mudcake with the same thickness, the rougher the contact face of concrete, the larger the strength and deformation indices; under the contact face with the same roughness, the thinner the mudcake, the larger the strength and deformation indices. Causes for the above differences among the strength and deformation indices under different test conditions are analyzed. It is appropriate to take into account the existence of mudcake during the tests.