钻孔直径对静态破碎剂致裂性能影响试验分析

发布时间：2018-01-07 23:31

本文关键词：钻孔直径对静态破碎剂致裂性能影响试验分析　出处：《科学技术与工程》2016年02期 　论文类型：期刊论文

【摘要】：进行岩石切割或开采时,静态破碎剂(简称SCA)致裂性能受多种因素的影响。为了研究钻孔直径对SCA致裂效果的影响,研究设计三种不同的SCA浆液水剂比;通过五种不同直径的高强度钢管来模拟不同的钻孔直径,测试了试件中SCA产生的膨胀压力。结果表明:1大直径的钻孔易发生喷孔现象,且首次喷孔时产生的膨胀压力最大;2当SCA浆液水剂比一定时,SCA产生的膨胀压力随着钻孔直径的增大而增大,但不同钻孔直径的钻孔达到最大膨胀压力所需时间基本相同。
[Abstract]:In order to study the effect of borehole diameter on SCA fracturing performance, the static fracturing agent (SCA) is affected by many factors during rock cutting or mining. Three kinds of SCA slurry / water ratio were studied and designed. Five kinds of high strength steel pipes with different diameters were used to simulate different borehole diameters, and the expansion pressure produced by SCA in the specimen was measured. And the expansion pressure is the largest when the first hole is sprayed. (2) the expansion pressure of SCA increases with the increase of borehole diameter, but the time required to reach the maximum expansion pressure of different borehole diameters is basically the same.
【作者单位】：安徽理工大学土木建筑学院;煤矿深井建设技术国家工程实验室(淮北);
【基金】：国家自然科学基金项目(51374012、51174004) 安徽省科技攻关计划项目(1501041123)资助
【分类号】：TD315
【正文快照】： 安徽省科技攻关计划项目(1501041123)资助目前,常用爆破法和水压致裂法来进行煤矿坚硬顶板致裂,岩石切割和开采等[1—3];但是水压致裂周期长,对岩石的透水性有要求,且不适用于含有裂隙的硬岩。爆破法在高瓦斯矿井内不适用,且爆破过程中会产生强烈震动和有毒气体污染环境。静态

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