| The south mine in the longmen gorge is located in the Huaying Mountain axisduplex region to Dragon Cave as the main anticline, The strata of the PermianChangxing(P1c)~Middle Triassic Leikoupo(T2l) a soluble carbonate rocks,integrating contacts. The south mine in the longmen gorge for new coal mine, sinceSeptember2009started construction of each well cave in the construction process hasworked karst water gushing accident occurred three times, the maximum amount ofwater up to20000m3/h, causing a certain amount of personal and property damage. Toensure the south mine in the longmen gorge safety construction mines,improveprevention, resilience mine, we need proven Longmenxia South Coal Mine area andmines surrounding karst law and water damage situation as mine excavation,layoutand mining face in the process of water damage to provide a scientific basis forprevention and treatment.Paper to fully solid geological and hydrogeological field research based insummarized the law of karst area, based on laboratory experiments selected by theappropriate reagent as return air connectivity test adit tracer binding studies last karstdevelopment law and connectivity testing research on karst water system in the studyarea to do further research. The main draw the following conclusions andunderstanding:1.The study area is located in the middle of the abdomen Huaying Mountain, tothe mountains and the dragon hole anticline axis direction basic consistent, NNWtrending. Terrain features by tectonic action, erosion impact and corrosion, area showscharacteristics of middle high on both sides of the lower, the whole middle lowmountain terrain. Lithology as plain carbonated rocks and carbonate rocksinterbedded with clastic rocks.2. The study area karst landform to clint karren, karst depressions, karst funnelform, into the hole and shaft, underground karst is mainly in the caves, and withaconcealed ore shoots, underground river, stalactite, accumulation form. Study on thedistribution of karstmorphology has obvious characteristics, performance for the stratigraphic boundary, tectonic line in the vicinity ofthe karst development than otherparts of the obvious.Karst individual form and combination characteristics aredifferent, surface and underground karst is developed, and most of them have someassociation. Underground cave mainly for pipeline type and fissure type two forms,two kinds of forms are likely to be the source ofunderground water inrush channel.3. The study area of karst development is affected by many factors andconstraints. The specific performance of astratum provides the material foundation inkarst region,study of carbonate rock is more than90%, non carbonate rock a smallpart of the existed by thin layer; geologicalstructures control the karst developmentscale anddirection, axial zone within the Dragon King hole anticline and synclineshowed characteristics of Tianwan karst is well developed, and the trend of tectonicline long axis direction of karst depression consistent characteristics;timecharacteristics of climate impact of karst topographyand surface hydrological network;karst developmentintensity, regional geomorphic characterization of thedevelopmentalcharacteristics of surface hydrologicalnetwork, movement trend and direction controlof groundwater, which also affected the general trend ofkarst development thegroundwater dynamic decision; karst type and speed development, undergroundkarstunderground water channel run off to anticline in karst areas on both sides of thewide valley, experienced" meteoric water-water soluble gap vein-piped watersoluble gap ", and combining with the lithology is different, also makes the storagespace,storage, regulation ability and the cave has large differences, which affect thesurface of karst development.4. Combined with karst development law of the study area, the geologicalstructure position, return Adit ingeomorphology and hydrology geology conditions,selected three test points connectivity test. Through the indoor experiment selectssuitable reagent, according to the analysis of field test data, is located in Guang’aneaststone toward the door shaft LT02number connection testpoints and return aditconnectivity associated possibility is larger, but still need further verification; LT01test point is located in the courtyard and is located in the red region of Deng LT03testpoints and return adit connectedrelationship less likely.5. Provide sufficient data and an overview of the basic theories of karstdevelopment law and study the connectivity test of this chapter of karst water system,the first study on the structural characteristics of karst water system, the division ofkarst water systems in the study area and the development of the conceptual model,the study area was divided into two first level Four subsystemin the four stage, based on the sub system are further divided into seven secondary water system, with LT02connectivity distribution in IV-1-2Region, both mutual authentication. Study on thecharacteristics of water cycleof karst water system, through the comparison ofFengperiod and dry period, the water temperature is relatively stable, the hydrologicalyear is not a floating, water chemistry field is relatively single, water chemistry type isHCO3-Ca. Water supply and drainage system arepresented the point and area in twoways. |
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