长江科学院院报
長江科學院院報
장강과학원원보
Journal of Yangtze River Scientific Research Institute
2015年
10期
11-16
,共6页
彭军%李翔宇%闫蕊鑫%马小莉
彭軍%李翔宇%閆蕊鑫%馬小莉
팽군%리상우%염예흠%마소리
黄土崩塌%破坏模式%驱动机制%防控对策%陕北地区
黃土崩塌%破壞模式%驅動機製%防控對策%陝北地區
황토붕탑%파배모식%구동궤제%방공대책%협북지구
loess collapse%failure mode%driving mechanism%prevention and control measures%northern Shaanxi area
黄土崩塌病害问题成为困扰陕北地区基础建设的技术难题,严重威胁交通、建筑的运营安全,但针对其崩塌破坏模式及对应防控对策展开系统、总结性的研究较少。基于陕北地区黄土边坡特有发育特征,综合分析该地区典型黄土崩塌灾害,对陕北黄土崩塌破坏模式进行系统提炼、归纳,从破坏形式上将其分为:剥落式、崩落式、台阶式、倾倒式、滑移式、冒落式6种;从破坏驱动机制上将其分为:应力型驱动、节理型驱动、扰动型驱动、混合型驱动4种。此外,针对各自的破坏模式,通过广泛归纳目前常用处置手段,提出各自对应的有效防控对策。研究成果对于陕北地区黄土崩塌破坏认知、具体防控手段选择具有重要工程参考价值。
黃土崩塌病害問題成為睏擾陝北地區基礎建設的技術難題,嚴重威脅交通、建築的運營安全,但針對其崩塌破壞模式及對應防控對策展開繫統、總結性的研究較少。基于陝北地區黃土邊坡特有髮育特徵,綜閤分析該地區典型黃土崩塌災害,對陝北黃土崩塌破壞模式進行繫統提煉、歸納,從破壞形式上將其分為:剝落式、崩落式、檯階式、傾倒式、滑移式、冒落式6種;從破壞驅動機製上將其分為:應力型驅動、節理型驅動、擾動型驅動、混閤型驅動4種。此外,針對各自的破壞模式,通過廣汎歸納目前常用處置手段,提齣各自對應的有效防控對策。研究成果對于陝北地區黃土崩塌破壞認知、具體防控手段選擇具有重要工程參攷價值。
황토붕탑병해문제성위곤우협북지구기출건설적기술난제,엄중위협교통、건축적운영안전,단침대기붕탑파배모식급대응방공대책전개계통、총결성적연구교소。기우협북지구황토변파특유발육특정,종합분석해지구전형황토붕탑재해,대협북황토붕탑파배모식진행계통제련、귀납,종파배형식상장기분위:박락식、붕락식、태계식、경도식、활이식、모락식6충;종파배구동궤제상장기분위:응력형구동、절리형구동、우동형구동、혼합형구동4충。차외,침대각자적파배모식,통과엄범귀납목전상용처치수단,제출각자대응적유효방공대책。연구성과대우협북지구황토붕탑파배인지、구체방공수단선택구유중요공정삼고개치。
Loess collapse has become a technological problem in the infrastructure in Northern Shaanxi area severely threatening the safety of traffic and buildings.But systematic and summative studies on the failure modes and pre-vention measures are rarely seen.In this paper according to the peculiar development characteristics of loess slope in Northern Shaanxi,typical loess collapses in this region are comprehensively analysed,and the failure modes are summarized.In terms of failure pattern,the loess collapses are divided into spalling,caving,step-falling,toppling, sliding,and roof-falling.And in terms of collapse mechanism,the loess collapses are driven by stress,joint devel-opment,human and precipitation disturbance,as well as the combined action of multiple factors.In addition,com-monly adopted countermeasures are summarized and effective measures corresponding to different failure modes are proposed.