论文部分内容阅读
一、概 况一九七八年七月二十日至廿六日在河南省建委主持下，在郑州召开了超早强水泥技术鉴定会议，到会有47个单位，会议通过了对这种水泥的技术鉴定，该水泥是一九七二年由上海同济大学、上海洋泾水泥厂、郑州市政公司水泥厂、河南建工材料科研所等单位研制的，经过工业部门广泛应用效果显著，特别适用于地质勘探钻孔中护壁堵漏、封孔止水，以及坑道掘进中喷锚支护等。77年以来，经上海地质处以及冶金系统勘探队、中南矿冶学院等单位在地质勘探钻孔中广泛试验，取得了一定成效。因此，在这次技术鉴定会上，煤炭部、冶金、地质部门一致呼吁要求将这种水泥列为地质勘探专用水泥。今年四月份召开的全国泥浆经验交流会议上，不少省局反映使用这种水泥进行护壁堵漏、封孔止水等方面还是取得了较好的效果。多年来地质勘探所用的水泥多采用建筑部门使用的300号、500号硅酸盐水泥，没有专用水泥，因此，
I. Overview From July 20th to June 26th, 1978, under the auspices of the Henan Provincial Construction Committee, an ultra-early-strength cement technology appraisal meeting was held in Zhengzhou. There will be 47 units. The meeting passed the cement. The technical appraisal of the cement was developed in 1972 by Shanghai Tongji University, Shanghai Oceans Cement Plant, Zhengzhou Municipal Cement Factory, and Henan Construction Engineering Materials Research Institute. The cement has been widely applied in the industrial sector and is particularly applicable. In the geological prospecting boreholes, the plugging of the retaining walls, the sealing and sealing of the water, and the injection of anchors and supports in tunnel excavation. Since 77 years, it has been extensively tested in geological prospecting boreholes by the Shanghai Geological Department and the Metallurgical System Exploration Team, the Central South Mining and Metallurgy Institute, and has achieved certain results. Therefore, at this technical appraisal meeting, the Ministry of Coal, Metallurgy, and Geological Sciences unanimously called for the inclusion of such cement as a special cement for geological exploration. At the National Mud Experience Exchange Conference held in April this year, many provincial bureaus have reported that cement has been used for wall plugging and sealing and water sealing. Cements used in geological exploration over the years have mostly used No. 300 and No. 500 Portland cement used in the construction sector. There is no dedicated cement. Therefore,