高富含水节理裂隙岩体台阶爆破试验研究  

Experimental Study on Bench Blasting of Joint Fissure Rock Mass with High Water Content

作　　者：李继业 张剑兴 邹锐 汪帅文 何兴贵 LI Jiye;ZHANG Jianxing;ZOU Rui;WANG Shuaiwen;HE Xinggui(The Fourth Engineering of the First Highway Public Bureau Co., Ltd, Nanning, Guangxi 530033, China;School of Resource and Environmental Engineering, Wuhan University of Technology, Wuhan, Hubei 430070, China;Mining College, Guizhou University, Guiyang, Guizhou 550025, China;Guizhou Xinlian Blasting Engineering Limited Company, Guiyang, Guizhou 550025, China)

机构地区：[1]中交一公局第四工程有限公司,广西南宁530033 [2]武汉理工大学资源与环境工程学院,湖北武汉430070 [3]贵州大学矿业学院,贵州贵阳550025 [4]贵州新联爆破工程集团有限公司,贵州贵阳550002

出　　处：《矿业研究与开发》2018年第4期6-9,共4页Mining Research and Development

基　　金：贵州省高层次创新型人才培养(百层次)项目(黔科合人才(2016)4030);贵州省爆破工程技术研究中心能力提升平台建设项目(黔科合高G字(2015)4004);2017年创新型领军企业再支持项目(黔科合成果(2017)4774)

摘　　要：遵义市南部新区新龙快线工程岩体含地下涌水且节理裂隙发育,爆破时炮孔内炸药容易流失,导致炸药未起爆或不完全起爆,严重影响采装作业、施工成本和进度,为此采用高强度PE软水管盛装乳化炸药进行优化实验,根据单耗、钻孔量和大块率等综合分析,选定的最优方案孔径为140mm,前排抵抗线为3.5 m,孔网参数为4 m×7 m,3排炮孔呈梅花排列,用Φ125mmPE软管盛装炸药,块度1.2m以上大块率仅2.68%,有效改善了爆破效果。In the south of Zunyi the rock mass of the new Longcheng Expressway project contains underground gushing water and joint fissures. Thus during blasting, explosives in the blast hole could easily be washed away, so that explosives cannot be detonated or fully detonated. It would seriously impact the operation of mining charge as well as production cost and schedule. In order to solve the above problems, the PE soft water pipes with high-strength were used to hold the emulsion explosives to conduct optimization experiments. According to the comprehensive analysis of unit consumptions, borehole quantities and block rates, the optimum scheme was obtained with the hole diameter of 140 mm, the front resistance lines of 3.5 m, the hole pat- tern parameter of 4 m ~ 7 m and three rows blastholes arrangement in plum flower shape. Using 125 mm PE soft water pipes toheld explosives, the block length was 12 m and the block rate was only 2.68%, which could effectively improve the blasting effect.

关 键 词：地下涌水 节理裂隙 爆破效果 

分 类 号：TD235.1[矿业工程—矿井建设]