由中国矿业大学和徐州矿务集团有限公司夹河煤矿合作完成的“超短过卷高度内二级缓冲及防坠装置”项目,于3月12日通过了江苏省煤炭工业管理办公室组织的技术鉴定。 该装置1998年8月经夹河煤矿进行现场工业性试验,各项技术性能指标均达到设计要求。近半年来的实际运行证明,主井的提升能力提高了10％～15％,取得的经济效益也十分明显。 鉴定专家认为:在研究成果中首次提出了二级 By the China University of Mining and Xuzhou Mining Group Co., Ltd. Jiahe coal mine completed the “ultra-short roll height within the second buffer and fall arrest device” project, on March 12 adopted by the Jiangsu Provincial Coal Industry Management Office of the technology Identification. The device in August 1998 by the river coal mine on-site industrial test, the technical performance indicators have reached the design requirements. The actual operation in the past six months has proved that the main shaft’s lifting capacity has been raised by 10% to 15% and the economic benefits obtained have also been very clear. Experts believe that: in the research results for the first time raised two