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聚氨酯是一种新兴的化学注浆材料。在灌注细、粉砂并要求有一定固砂强度的工程中,聚氨酯能完成其他浆液所难以胜任的工作。某钼业公司尾矿库的泄水涵洞止水固砂获得成功,即其一例。一、工程概况尾矿库泄水涵洞系选厂生产回水及汛期排洪的重要配套工程。涵洞上方已覆盖有约30米厚的尾砂。涵洞呈十几度至二十多度折线向下倾斜,洞壁厚300毫米,双筋混凝土衬砌。因基础不良,产生不均匀沉降和侧向位移,导致涵
Polyurethane is a new chemical grouting material. In perfusion fine, silt and require a certain degree of sand-hardening strength of the project, the polyurethane can be completed by other sewer hard work. A molybdenum company tailings pond drainage culvert water sealing solid sand success, that is an example. First, the project profile Tailings Catchment Drainage culverts selected factory production backwater and flood season flood supporting an important supporting project. Over the culvert has been covered with about 30 meters thick tailings. Culverts ten degrees to more than 20 degrees polyline tilt down, hole wall thickness of 300 mm, double-reinforced concrete lining. Due to poor foundation, resulting in uneven settlement and lateral displacement, leading to culvert