地球学报
地毬學報
지구학보
ACTA GEOSCIENTIA SINICA
2015年
1期
84-92
,共9页
潘晓东%梁杏%唐建生%苏春田%孟小军
潘曉東%樑杏%唐建生%囌春田%孟小軍
반효동%량행%당건생%소춘전%맹소군
岩溶水%地下水系统模式%地下水开发利用%黔东北高原斜坡
巖溶水%地下水繫統模式%地下水開髮利用%黔東北高原斜坡
암용수%지하수계통모식%지하수개발이용%검동북고원사파
karst water%patterns of groundwater system%groundwater exploitation and development%northeast Guizhou slope zone
受深切河谷地貌控制,黔东北大部分地区岩溶地下水深埋且排泄于河谷岸边,以快速的管道裂隙流为主,给地下水资源勘探开发带来了极大的困难,局部地区受蓄水构造控制形成勘探有利的地下水富集区。笔者基于地貌和蓄水构造将研究区岩溶地下水系统归纳总结为深切河谷型、向斜山地型、单斜夹层型和背斜槽谷型4类模式。深切河谷型岩溶地下水系统地下水水力坡度大,地下水以快速的管道流为主,排泄点低,开发利用方式建议直接在地下河出口或天窗中抽提地下水,经济效益明显地区可堵洞成库进行综合利用;向斜山地型岩溶地下水系统发育高位岩溶泉或地下河出口,排泄点高,适合直接引水利用;单斜夹层型岩溶地下水系统在岩性接触带出露一系列接触泉,排泄分散,开发利用方式建议直接利用或抽提岩溶泉水,受夹层隔水顶底板影响局部地区可钻井取水;背斜核部出露寒武系白云岩地层,导致背斜槽谷型岩溶地下水系统含水岩层均匀厚度大,分布大量非全排型岩溶泉,地下水开发适合抽提泉水或钻井抽取地下水。
受深切河穀地貌控製,黔東北大部分地區巖溶地下水深埋且排洩于河穀岸邊,以快速的管道裂隙流為主,給地下水資源勘探開髮帶來瞭極大的睏難,跼部地區受蓄水構造控製形成勘探有利的地下水富集區。筆者基于地貌和蓄水構造將研究區巖溶地下水繫統歸納總結為深切河穀型、嚮斜山地型、單斜夾層型和揹斜槽穀型4類模式。深切河穀型巖溶地下水繫統地下水水力坡度大,地下水以快速的管道流為主,排洩點低,開髮利用方式建議直接在地下河齣口或天窗中抽提地下水,經濟效益明顯地區可堵洞成庫進行綜閤利用;嚮斜山地型巖溶地下水繫統髮育高位巖溶泉或地下河齣口,排洩點高,適閤直接引水利用;單斜夾層型巖溶地下水繫統在巖性接觸帶齣露一繫列接觸泉,排洩分散,開髮利用方式建議直接利用或抽提巖溶泉水,受夾層隔水頂底闆影響跼部地區可鑽井取水;揹斜覈部齣露寒武繫白雲巖地層,導緻揹斜槽穀型巖溶地下水繫統含水巖層均勻厚度大,分佈大量非全排型巖溶泉,地下水開髮適閤抽提泉水或鑽井抽取地下水。
수심절하곡지모공제,검동북대부분지구암용지하수심매차배설우하곡안변,이쾌속적관도렬극류위주,급지하수자원감탐개발대래료겁대적곤난,국부지구수축수구조공제형성감탐유리적지하수부집구。필자기우지모화축수구조장연구구암용지하수계통귀납총결위심절하곡형、향사산지형、단사협층형화배사조곡형4류모식。심절하곡형암용지하수계통지하수수력파도대,지하수이쾌속적관도류위주,배설점저,개발이용방식건의직접재지하하출구혹천창중추제지하수,경제효익명현지구가도동성고진행종합이용;향사산지형암용지하수계통발육고위암용천혹지하하출구,배설점고,괄합직접인수이용;단사협층형암용지하수계통재암성접촉대출로일계렬접촉천,배설분산,개발이용방식건의직접이용혹추제암용천수,수협층격수정저판영향국부지구가찬정취수;배사핵부출로한무계백운암지층,도치배사조곡형암용지하수계통함수암층균균후도대,분포대량비전배형암용천,지하수개발괄합추제천수혹찬정추취지하수。
Controlled by deep valleys, karst groundwater level is very deep in most places and the groundwater is excreted along river shore in northeast Guizhou area. The groundwater mainly flows rapidly in pipeline and crack forms, and hence the exploration of groundwater resources is rather difficult; nevertheless, there are also some groundwater enrichment zones controlled by water storage structure. Based on geomorphologic characteristics and geological structure of groundwater storage, the authors summed up the karst groundwater system into four patterns, namely deep valley, syncline mountain land, monoclinic interlayer, and anticlinal aulacogen. For deep valley type, groundwater hydraulic slope is mostly rather steep, and the groundwater is mostly flows rapidly in pipeline form with low level discharge, and hence the exploration should adopt the method of pumping from underground driver outlet and skylight; in large economic benefit area, a reservoir could be built by plugging the hole. For syncline mountain land type, many karst springs and underground river outlets are usually formed in higher position with high level discharge and therefore directly diverting water is the best way. For monoclinic interlayer type, many springs are formed along lithologic boundaries, so we can pump karst springs for direct utilization and can also drill water in local area affected by the roof and bottom of the intercalated bed. For anticlinal aulacogen, a lot of dolomites are distributed near the anticline and aquifer is thick and, therefore, the aquifer has great uniform thickness; in addition, there exist a lot of non all-discharge springs in the karst groundwater system; therefore pumping and drilling seem to be the suitable ways to exploit and develop groundwater.