四川永荣局曾家山矿“三产”开发科经过精心研究,利用井下延伸—250m 水平西二采区开拓井巷掘进出的石英砂岩生产出一种新型建材——强粘石英砂,使石英砂岩变废为宝.这种强粘石英砂含石英90%以上.由于它具有粘结性好、不风化、便于施工等优点,并且比河沙少用1/3水泥,成本降低25%,可代替建筑用的河沙,用于井巷锚喷及房屋建筑、修筑路面等,因此经济效益和社会效益显著.目前,该矿已将这一研究成果列为“三产”开发的重点 Sichuan Yong Yong Bureau Zeng Jiashan mine “tertiary” Development Section after careful study, the use of downhole extension -250m West Second Mining District to open up the tunnel digging out of quartz sandstone to produce a new type of building materials - strong bonded quartz sand, quartz Sandstone turned waste into treasure.This strong stick quartz sand containing quartz more than 90% because of its good adhesion, not weathering, ease of construction and other advantages, and use less than 1/3 cement, the cost is reduced by 25% It can replace the river sand used in construction, used in anchor and shot blasting and building construction, building pavement, etc. Therefore, it has significant economic and social benefits. At present, the mine has listed this research achievement as the focus of the “three production” development