一些矿山企业用采空区胶结充填法开采。这些企业使用胶结充填料的经验表明,仅按平均强度评价充填体的质量是不够的。充填体的取样化验资料证明,一些地方的强度与平均强度相差很大,主要是某些地段的强度较低。过去作的充填体研究表明,强度指标很不一致是由于采空区充填时不能保证充填料的均质性。大家知道,决定混凝土均质性的主要因素是水灰比和骨料粒度。胶结 Some mining companies mined with cement mining method. The experience of these businesses with cementitious fillers has shown that evaluating the quality of the fillings based on average strength alone is not sufficient. The sampling data of the filling body prove that there is a big difference between the strength and the average strength in some places, mainly due to the lower strength in some areas. In the past, researches on the filling bodies showed that the inconsistencies in the strength indexes were due to the inability to guarantee the homogeneity of the filling materials when filling the goaf. As you know, the main factors that determine the homogeneity of concrete are the water-cement ratio and the aggregate size. Bonding