CAJ | 학술논문

目前实施的<公路隧道设计规范>(JTG D70-2004)对土质围岩分级、围岩亚级分级方法都没有进行研究,因此,不能满足隧道设计和施工的要求.通过对岩质围岩和土质围岩自稳性的大量室内试验、数值计算和理论分析,建立了公路隧道岩质围岩和土质围岩统一的亚级分级标准.研究结果显示:围岩自稳跨度是围岩自稳性的综合反映,围岩自稳跨度可分为长期稳定跨度、基本稳定跨度、暂时稳定跨度和不稳定跨度.研究表明,规范中岩质围岩的Ⅲ级、Ⅳ级和Ⅴ级分别依据自稳跨度可分为2个、3个和2个亚级;土质围岩尽管分为黏质土围岩、砂质土围岩及碎石土围岩,但按照各自的自稳跨度可以分别进行亚级划分.可见,以自稳跨度可以建立岩质围岩和土质围岩统一的亚级分级标准.
목전실시적<공로수도설계규범>(JTG D70-2004)대토질위암분급、위암아급분급방법도몰유진행연구,인차,불능만족수도설계화시공적요구.통과대암질위암화토질위암자은성적대량실내시험、수치계산화이론분석,건립료공로수도암질위암화토질위암통일적아급분급표준.연구결과현시:위암자은과도시위암자은성적종합반영,위암자은과도가분위장기은정과도、기본은정과도、잠시은정과도화불은정과도.연구표명,규범중암질위암적Ⅲ급、Ⅳ급화Ⅴ급분별의거자은과도가분위2개、3개화2개아급;토질위암진관분위점질토위암、사질토위암급쇄석토위암,단안조각자적자은과도가이분별진행아급화분.가견,이자은과도가이건립암질위암화토질위암통일적아급분급표준.
The implementary Code for Design of Road Tunnel(JTG D70-2004)can't satisfy the requirement of design and construction sometimes due to no study of soil surrounding rock classification and sub-classification methods.After ascertaining the building foundation of surrounding rock sub-classification standard in road tunnel,it had been constituted through lots of test,numerical calculation and theoretical analysis.The researches show that self-stability span is synthetical reflection of surrounding rock stability,so sub-classification standard can be constituted based on it.Surrounding rock self-stability span can divide into long-term stability span,basic stability span,temporary stability span and instability span.Ⅲ class of Rocky surrounding rock in criterion can divide into two sub-classification according as surrounding rock stability,three for Ⅳ class and two for Ⅴ class.Though soil surrounding rock include clayey surrounding rock,sandy surrounding rock and debris surrounding rock,their stability can be unified.The uniform standard of rocky and soil surrounding rock sub-classification built by self-stability span has rationality and inheritance.