固废基湿喷混凝土开发与工业应用  

Development and Industrial Application of Solid Waste-Based Wet-Sprayed Concrete

作　　者：曹斌[1] 冯亮[1] 武旭斌 胡蜀威 郭荣华 CAO Bin;FENG Liang;WU Xubin;HU Shuwei;GUO Ronghua(No.3 Mining Area,Jinchuan Group Co.,Ltd.,Jinchang,Gansu 737104,China;School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China;Key Laboratory of Ministry of Education for High-Efficient Mining and Safety of Metal,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]金川集团股份有限公司三矿区,甘肃金昌市737104 [2]北京科技大学土木与资源工程学院,北京100083 [3]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083

出　　处：《矿业研究与开发》2024年第12期251-256,共6页Mining Research and Development

基　　金：国家重点研发计划项目(2018YFC1900603,2018YFC0604604)。

摘　　要：随着矿山不断向深部发展,固体废弃物堆存问题日益突出,用固体废弃物代替绿豆石、河砂等作为骨料进行湿喷支护,既能有效缓解固体废弃物带来的安全和环保问题,又能降低湿喷支护成本。为了研究其可行性,进行了室内试验和工业试验,结果表明:在水泥掺量为350 kg/m^(3)的条件下,铜渣作为骨料,28 d单轴抗压强度比绿豆石+河砂作为骨料的高52.9%,铜渣+破碎骨料湿喷混凝土28 d单轴抗压强度比绿豆石+河砂的高39.7%;湿喷混凝土单轴抗压强度达到C15强度等级条件下,相比于用绿豆石+河砂骨料,用铜渣作为骨料,每立方米湿喷混凝土可以节省63元,用铜渣+破碎骨料作为骨料,每立方米湿喷混凝土可以节省50元。固体废弃物骨料湿喷混凝土工艺更简单,应用效果更好,经济价值更高,不仅解决了固体废弃物堆放问题,还具有良好的经济效益和社会效益。With the continuous development of deep mining, the problem of solid waste has become increasingly prominent. Using solid waste instead of mung bean stone and river sand as aggregate for wet-sprayed support can not only effectively alleviate the safety and environmental protection problems caused by solid waste, but also reduce the cost of wet-sprayed support. In order to study its feasibility, indoor tests and industrial tests were carried out. The results show that under the condition of cement dosage of 350 kg/m^(3), the 28 d uniaxial compressive strength of copper slag as aggregate is 52.9% higher than that of mung bean stone+river sand as aggregate, and the 28 d uniaxial compressive strength of wet-sprayed concrete of copper slag+crushed aggregate is 39.7% higher than that of mung bean stone+river sand. Under the condition that the uniaxial compressive strength of the wet-sprayed shotcrete reaches C15 strength grade, compared with mung bean stone+river sand aggregate, using copper slag as aggregate can save 63 yuan per cubic meter of wet-sprayed concrete, and using copper slag+broken aggregate as aggregate can save 50 yuan per cubic meter of wet-sprayed shotcrete. The wet-sprayed concrete technology of solid waste aggregate is simpler, the application effect is better, and the economic value is higher. This study not only solves the problem of solid waste stacking, but also has good economic and social benefits.

关 键 词：湿喷混凝土 固体废弃物 水泥掺量 单轴抗压强度 

分 类 号：TD353[矿业工程—矿井建设]