山东国土资源
山東國土資源
산동국토자원
LAND AND RESOURCES IN SHANGDONG PROVINCE
2015年
1期
62-64
,共3页
灰岩%高密度电阻率法%岩溶%公路路基
灰巖%高密度電阻率法%巖溶%公路路基
회암%고밀도전조솔법%암용%공로로기
Limestone%high density resistivity method%karst
灰岩分布区易发生岩溶塌陷等地质灾害,高密度电阻率法是岩溶地质调查的重要手段。以某一段穿越岩溶发育区的公路为例,应用高密度电法对区内暗河、槽谷型岩溶塘、落水洞等灾害地质体进行了探测,结果显示拟建路段覆盖层厚度大约为2~20 m,基岩内岩溶极发育,岩石地表起伏大,溶沟、溶槽、岩溶塌陷、落水洞发育;岩石中溶蚀裂隙、溶洞发育。表明高密度电阻率法能够有效地判定岩溶的发育情况,可以为地质灾害评估提供科学客观的依据。
灰巖分佈區易髮生巖溶塌陷等地質災害,高密度電阻率法是巖溶地質調查的重要手段。以某一段穿越巖溶髮育區的公路為例,應用高密度電法對區內暗河、槽穀型巖溶塘、落水洞等災害地質體進行瞭探測,結果顯示擬建路段覆蓋層厚度大約為2~20 m,基巖內巖溶極髮育,巖石地錶起伏大,溶溝、溶槽、巖溶塌陷、落水洞髮育;巖石中溶蝕裂隙、溶洞髮育。錶明高密度電阻率法能夠有效地判定巖溶的髮育情況,可以為地質災害評估提供科學客觀的依據。
회암분포구역발생암용탑함등지질재해,고밀도전조솔법시암용지질조사적중요수단。이모일단천월암용발육구적공로위례,응용고밀도전법대구내암하、조곡형암용당、낙수동등재해지질체진행료탐측,결과현시의건로단복개층후도대약위2~20 m,기암내암용겁발육,암석지표기복대,용구、용조、암용탑함、낙수동발육;암석중용식렬극、용동발육。표명고밀도전조솔법능구유효지판정암용적발육정황,가이위지질재해평고제공과학객관적의거。
Karst collapse can easily happen in limestone distribution area. High density resistivity method is an important method for karst geological detection. In this paper, taking the detection of a certain roadbed as an example, by using high density resistivity method, geological disasters have been detected, such as under-ground river, valley type karst sinkhole and pond. It is showed that thickness of covering layer in constructing area is about 2~20m. Karst developed well in bedrock. Large wavy in surface, well developed karren, solu-tion groove, karst collapse and ponor, corrosion cracks in rocks and well developed karst rocks. It is showed that high density resistivity method can effectively judge the development of karst. It can provide a scientific ba-sis for the evaluation of geological disaster.