CN103389520A - Method for distinguishing water bursting source of coal mine - Google Patents
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Abstract
A method for distinguishing water bursting source of a coal mine comprises the specific steps as follows: 1, determining the hydrogeological characteristics of a target area; 2, conducting water sample collection and detection on the target area; 3, preliminarily analyzing the information of water samples in the target area; 4, determining the finger-print sensitive area in the three-dimensional fluorescence spectrum of DOM (Dissolved Organic Matter) in different water bearing layers in the target area; 5, establishing a hydrochemical characteristic information table of each water layer in the target area. The method provided by the invention is fast in distinguishing, and can establish the hydrochemical characteristics of different water bearing layers by utilizing the total content and the fluorescence characteristics of DOM in groundwater, so as to provide a technical method for distinguishing a water bursting source, provide hydrochemical characteristic data that can easily distinguish water bearing layers for water prevention and control, determine an accurate water bursting source for water shutoff in the process that water bursting happens in the coal mine, and buy precious time for emergency rescue and disaster relief.
Description
Technical field
The present invention relates to the technical field of Coal Mines gushing water, relate in particular to a kind of mine water inrush water source method of discrimination.
Background technology
Roof water damage problem is one of subject matter of China's coal mines safety, and how can carry out fast the judgement of gushing water water source is the important key that reduces water damage.
And analyze as can be known, the general growth of the roof and floor of coal-bearing strata has multilayer water-filling water-bearing zone, and top board water flowing fractured zone, tomography and permeable structure, water-bearing zone watery etc. are the key factors of bringing out the coal mine flood accident in progress of coal mining.For many years, hydrogeochemistry, as the important composition of colliery control water conservancy project work, can disclose the interaction mechanism of underground water and geologic media better, for identification gushing water water source, solution coal mine flood problem provide good technical guarantee.Hydrogeochemical application is divided into two classes substantially, i.e. natural method and manual method, and the former refers to the natural key element that distributes in underground water (chemical composition and isotopic composition etc.) is studied; The latter refers to by artificial input tracer agent (chemistry and isotopic tracer), finds hydraulic connection between water-bearing zone and transmissibility and the connectedness of structure.
The top priority that colliery control water conservancy project is done is to search out the typochemical element (compound, gas and isotope etc.) that represents each water-bearing zone Characteristics of Groundwater, and on this basis the gushing water water source is identified.Commonly used have Piper trilinear chart method, different mark type component concentration relevant relationship method, single mark type component concentration codomain method and an artificial trace method etc.But due to underground water in the natural system cyclic process, the lithosphere that is in contact with it, biosphere and air sphere are carrying out extremely complicated material, energy and message exchange always, hydrogeochemical characteristics all constantly changes on spatial and temporal scales, cause the ground water chemistry origin cause of formation very complicated, the research in this field has at present run into the bottleneck of development.
in fact, water rock mass system is one and comprises water, rock, gas and organic system, exist natural Dissolved Organic Matter (Dissolved Organic Matter more or less in underground water, DOM), this is a kind of aerobic that contains, nitrogen, sulphur functional group is (as carboxyl, phenol, alkene, alcohol, carbonyl, amino, thin base) aromatic series and the potpourri of aliphatic organic compound, it is mainly derived from the higher organism of the remaining stability of getting off in the geologic sedimentation process, the new organism that enters with region of intake that produce, physical geography and geology-hydrogeological condition are depended in its content and distribution., for the research of this respect, on the basis of organic geochemistry and water geology, formed a new frontier branch of science-organic hydrogeochemistry.Its main task is to come quantity, composition, the regularity of distribution and the effect in geology, geochemistry and other processes thereof of organic substance in Study of The Underground water by qualitative, the quantitative sign of various organic components in water.A lot of theories and practical problems in modern geology, geochemistry and water geology, as various migration of elements and enrichment, the formation of some type mineral water and evaluation, the healthy prevention of underground water and the drinking and technology utilization and environmental pollution etc. of fresh groundwater of medical value thereof in the formation in oil gas mineral deposit and hydrogeochemical prospecting method thereof, metalliferous deposit water, all relevant with organic hydrogeochemistry.
Dissolved Organic Matter is as solute composition important in underground water, existing research is verified, due to the difference of geology-hydrogeological condition, in the different water cut layer, there are larger difference in DOM type and content, and in same water-bearing zone, DOM constantly changes with the migration of underground water.Utilize DOM in underground water to set up the Features of Hydrochemistry of different water cut layer, can solve the difficult problem that present mine water inrush water source is difficult to differentiate, promote that colliery is anti-to harness the river and the development of water damage control.
For this reason, deviser of the present invention, by concentrating on studies and designing, comprehensively is engaged in for a long time experience and the achievement of related industry for many years, and research and design goes out a kind of mine water inrush water source method of discrimination, realizes effectively differentiating.
Summary of the invention
The object of the present invention is to provide a kind of mine water inrush water source method of discrimination, the method is differentiated fast, can utilize DOM total content and fluorescent characteristic in underground water, set up the Features of Hydrochemistry of different water cut layer, differentiate technical method is provided for the gushing water water source, the Features of Hydrochemistry data in easy differentiation water-bearing zone are provided for colliery control water conservancy project, for gushing water water source is accurately determined in water blockoff work in the mine water inrush generating process, and win the valuable rescue and relief work time.
For achieving the above object, the invention discloses a kind of mine water inrush water source method of discrimination, its concrete steps are as follows:
1) determine the target area hydrogeological characteristics; After collecting the geology-hydrogeologic data in target mining area and investigating on the spot, the hydrogeological distribution plan of establishment target area;
2) water sampling and detection are carried out in target area; Carry out water sampling according to the hydrogeological distribution plan of target area, on vertical,, according to the degree of depth of different water cut layer, gather different water cut layer water sample; Upwards flat, water flow field under base area, gather same water-bearing zone upstream and downstream water sample; Then, detect TOC, UV in water sample
254Index, and detect the three-dimensional fluorescence spectrum of DOM;
3) the water sample information of target area is carried out initial analysis; According to the water-quality guideline detected value that obtains, differentiate DOM content difference, fluorescence fingerprint difference in the different water cut layer, determine suitable excitation wavelength interval and emission wavelength interval, tentatively determine the finger-print region of tyrosine, tryptophane class, class fulvic acid, dissolubility microbial metabolic products and class humic acid in water;
4) determine the three-dimensional fluorescence spectrum fingerprint sensitizing range of DOM in the different water cut layer of target area;
5) set up the Features of Hydrochemistry information table of each water layer of target area.
Wherein, in step 2) in utilize fluorospectrophotometer to detect the three-dimensional fluorescence spectrum of DOM.
Wherein,, based on the study area hydrogeological condition, analyse in depth DOM content, fluorescence fingerprint sensitizing range and fluorescence peak intensity in the different water cut layer in step 5), utilize DOM to set up the Features of Hydrochemistry information table in each water-bearing zone.
By said structure, mine water inrush of the present invention water source method of discrimination has been realized following technique effect:
1, fast effectively, the checkout equipment of TOC, UV254 and 3DEEM is very general, and detection method is very simple and efficient, can avoid complicated detection method to delay speedily carrying out rescue work the time of gushing water water source identification.
2, with strong points, the method is by analyzing DOM content and fluorescent characteristic in underground water, and the Features of Hydrochemistry in each water-bearing zone of Efficient Characterization, do not relate to the materials such as other zwitterion, trace element and isotope.
3, with clearly defined objective, utilize the difference of DOM content and fluorescent characteristics in different water cut layer (body), can very deterministicly set up each aquifer water chemical feature, for the identification of mine water inrush water source provides scientific basis.
4, foresight is strong, and in same water-bearing zone, the variation of DOM can reflect water-bearing zone redox environment of living in and Groundwater Flow feature well.
5, interference is little, and in underground reservoir, content own is extremely low, mainly from region of intake, infiltrates, and with underground water transport, moves past in journey, and DOM and various oxide isolation react step by step, and is significantly regular.
6, can form more perfect mine water inrush water source with other hydrochemical index and differentiate system.
The present invention will be further described in detail by the following specific embodiments, and further combined with the description of the drawings, will be more apparent and obvious to understand.
Description of drawings
Fig. 1 has shown the DOM three-dimensional fluorescence spectrum figure of surface water in embodiment 1.
Fig. 2 has shown the DOM three-dimensional fluorescence spectrum figure of Quaternary system water in embodiment 1.
Fig. 3 has shown the DOM three-dimensional fluorescence spectrum figure of Sandstone Water in embodiment 1.
Fig. 4 has shown the DOM three-dimensional fluorescence spectrum figure of Ordovician karst water in embodiment 1.
Embodiment
The concrete steps of mine water inrush of the present invention water source method of discrimination are as follows:
1) determine the target area hydrogeological characteristics; Namely the hydrogeological condition of mine is carried out systematic analysis, at first collect the geology-hydrogeologic data in target mining area, then investigate on the spot, determine water-bearing zone distribution, underground water the conditong of recharge and flowoff and draining of target area etc., the hydrogeological characteristics in hard objectives zone, and the hydrogeological distribution plan of establishment target area.
2) water sampling and detection are carried out in target area; At first, according to the hydrogeological distribution plan of target area, carry out water sampling, on vertical,, according to the degree of depth of different water cut layer, gather different water cut layer water sample; Upwards flat, water flow field under base area, gather same water-bearing zone upstream and downstream water sample; Then, detect TOC, UV in water sample
254Deng the index that characterizes DOM content, and utilize fluorospectrophotometer to detect the three-dimensional fluorescence spectrum (Three dimensional excitation emission matrix, 3DEEM) of DOM.
3) the water sample information of target area is carried out initial analysis; Namely according to the water-quality guideline detected value that obtains, differentiate DOM content difference, fluorescence fingerprint difference in different water cut layer (body), determine suitable excitation wavelength interval and emission wavelength interval, tentatively determine the finger-print region of tyrosine, tryptophane class, class fulvic acid, dissolubility microbial metabolic products and class humic acid in water.
4) determine the three-dimensional fluorescence spectrum fingerprint sensitizing range of DOM in the different water cut layer of target area; Be binding district geology-hydrogeological condition, and fluorescence peak intensity in sensitizing range is carried out quantization signifying.
5) set up the Features of Hydrochemistry information table of each water layer of target area; Both, based on the study area hydrogeological condition, analyse in depth DOM content, fluorescence fingerprint sensitizing range and fluorescence peak intensity in the different water cut layer, and utilized DOM to set up the Features of Hydrochemistry information table in each water-bearing zone.It mainly creates based on following information:
Surface water: the DOM that forms after surface vegetation rots, at first dissolve and enter surface water body, cause in surface water body DOM content higher, and class fulvic acid, tryptophane class aromatic series protein fluorescence peak are more remarkable, the fluorescence peak in other several zones also has apparent in view appearance.
Quaternary system water: owing to surface water or infiltration of ground surface water, having stronger hydraulic connection, in Quaternary system water, main fluorescence peak all has demonstration, but under the relative aerobic environment effect of Quaternary system, DOM content and fluorescence peak intensity all have obvious decline than surface water.
The top piestic water: with respect to surface water and Quaternary system water, in this interval water-bearing zone, DOM content is low again, and has indivedual fluorescence peaks (tyrosine aromatic series protein) not occur.
The bottom piestic water: in the Deep Confined water-bearing zone, underground water is after the aerobic reaction of region of intake, long-term disposal reducing environment again, in water, DOM content is very low, only has 1-2 fluorescence peak to occur, is mainly that tryptophane class aromatic series protein is or/and the dissolubility microbial metabolic products.
, by above steps, can, to the water chemistry information of target area foundation based on DOM, provide the scientific basis of Quick for the identification of mine water inrush water source.
Ultimate principle of the present invention is: by DOM in coal field underground water is studied, discovery is due to the difference of geology-hydrogeological condition, redox environment, there is larger difference in content and the fluorescent characteristic of DOM in different water cut layer (body): surface water body directly obtains the vegetation DOM that forms that rots, DOM content is higher, fluorescence peak all have manifest and peak value stronger; Afterwards due to unsaturation band aerobic reaction, cause DOM content and fluorescence peak intensity in Quaternary system water all than surface water, obvious decline to be arranged; In the confined aquifer of top, after dissolved oxygen exhausts, NO
3 -Can and organic matter generation reduction reaction, make in water DOM content lower, and have indivedual fluorescence peaks to disappear; In the confined aquifer of bottom, Mn+Fe, SO
4 2-Participate in gradually in the organism reduction reaction Deng oxide isolation, this moment, DOM content was very low, only had 1-2 fluorescence peak to occur.Utilize these Changing Patterns and otherness, can, by DOM content in different water cut layer (body) and fluorescent characteristics are carried out determination and analysis, set up each aquifer water chemical feature based on DOM, thereby the mine water inrush water source is carried out Quick.
Wherein, checkout equipment comprises fluorospectrophotometer, total organic carbon/total blood urea/nitrogen analyzer, UV, visible light luminosity meter, and described fluorospectrophotometer exciting light and wavelength of transmitted light are respectively 200～400nm and 240～600nm, with the 2-5nm step-length, increase progressively.
The present invention is further described below in conjunction with embodiment.
Embodiment 1: referring to Fig. 1-4, the method of discrimination at a kind of mine water inrush water source, in Ordos Basin L ore deposit, TOC concentration is respectively the 0.67mg/L(surface water in different water cut layer (body)), 0.79mg/L(Quaternary system water), the 0.49mg/L(Sandstone Water), the 0.24mg/L(Ordovician karst water); UV
254Content is respectively 0.022cm
-1(surface water), 0.018cm
-1(Quaternary system water), 0.011cm
-1(Sandstone Water), 0.005cm
-1(Ordovician karst water).Three-dimensional fluorescence spectrum can show the fluorescent characteristics of DOM in different water bodys more intuitively: in surface water and Quaternary system water, 5 finger-print regions all show fluorescence peak, wherein in surface water, the fluorescence intensity of tyrosine (EX/EM=230/310) is 37.54, the fluorescence intensity of tryptophane (EX/EM=230/340) is 147.6, the fluorescence intensity of class fulvic acid (EX/EM=255/426) is 178, the fluorescence intensity of dissolubility microbial metabolic products (EX/EM=275/336) is 93.23, and the fluorescence intensity of class humic acid (EX/EM=315/398) is 98.88.Quaternary system water is directed to surface water, in its water, organic components is more similar to surface water, but surface water enter underground after, meeting and dissolved oxygen, redox reaction occurs in nitrate etc., cause partial organic substances in water to be consumed, the fluorescence intensity of tyrosine (EX/EM=230/304) is 15.5, the fluorescence intensity of tryptophane (EX/EM=230/340) is 76.22, the fluorescence intensity of class fulvic acid (EX/EM=240/402) is 143.2, the fluorescence intensity of dissolubility microbial metabolic products (EX/EM=275/344) is 71.78, the fluorescence intensity of class humic acid (EX/EM=320/392) is 84.36.In sandstone aquifer, tyrosine reacts and consumes gradually, and in Sandstone Water, take tryptophane and class fulvic acid fluorescence peak as main, fluorescence intensity is respectively 125.72 and 99.75.Only contain the fluorescence peak of tryptophane and dissolubility microbial metabolic products in Ordovician karst water, fluorescence intensity is respectively 175.23 and 87.51.Utilize content's index and the fluorescent characteristics of above-mentioned DOM, can very clearly distinguish the Features of Hydrochemistry in each water-bearing zone, for the mine water inrush water source, differentiate scientific basis is provided.
Embodiment 2: the method for discrimination at a kind of mine water inrush water source, in Ordos Basin Z ore deposit, TOC concentration is respectively the 0.87mg/L(surface water in different water cut layer (body)), 0.72mg/L(Quaternary system water), the 0.401mg/L(Sandstone Water), the 0.283mg/L(Ordovician karst water); UV
254Content is respectively 0.025cm
-1(surface water), 0.016cm
-1(Quaternary system water), 0.008cm
-1(Sandstone Water), 0.001cm
-1(Ordovician karst water).Three-dimensional fluorescence spectrum can show the fluorescent characteristics of DOM in different water bodys more intuitively: in surface water and Quaternary system water, DOM all demonstrates 5 fluorescence peaks, the fluorescence peak of tryptophane in surface water (EX/EM=230/340) and class fulvic acid (EX/EM=255/426) is apparent in view, and fluorescence intensity is respectively 161.60 and 182.00; Only have the fluorescence peak of class fulvic acid apparent in view in Quaternary system water, fluorescence intensity is 143.2.Tyrosine (EX/EM=205～210/310～314), tryptophane (EX/EM=225～230/334～342) and dissolubility microbial metabolic products (EX/EM=270～275/326～334) fluorescence peak have appearred in Sandstone Water, wherein tryptophane is the most obvious, and fluorescence intensity is 164.3～340.7.The fluorescence peak that also contains tyrosine, tryptophane and dissolubility microbial metabolic products in Ordovician karst water, wherein all high in other water-bearing zone of tryptophane fluorescence peak strength ratio (body), its value reaches 381.1.Utilize content's index and the fluorescent characteristics of above-mentioned DOM, can very clearly distinguish the Features of Hydrochemistry in each water-bearing zone, for the mine water inrush water source, differentiate scientific basis is provided.
Embodiment 3: the method for discrimination at a kind of mine water inrush water source, in mining area, North-China Type coalfield, east, TOC concentration is respectively in different water cut layer (body): the 1.63mg/L(surface water), 0.731mg/L(Quaternary system water), 0.305mg/L(Permian system water), 0.42mg/L(Carboniferous system water), 0.235mg/L(Cambrian system water); UV
254Value is respectively: 0.047cm
-1(surface water), 0.013cm
-1(Quaternary system water), 0.002cm
-1(Permian system water), 0.008cm
-1(Carboniferous system water), 0.001cm
-1(Cambrian system water).Three-dimensional fluorescence spectrum can show the fluorescent characteristics of DOM in different water bodys more intuitively: in surface water, DOM demonstrates 5 fluorescence peaks, except tyrosine, the fluorescence peak intensity of other material is all higher, and the fluorescence intensity of tryptophane, class fulvic acid, dissolubility microbial metabolic products and class humic acid is respectively 900.7,781.8,648.1 and 525.8.In Quaternary system water, the fluorescence peak of class humic acid does not appear in DOM; The fluorescence peak of tryptophane is the most remarkable, and fluorescence intensity is 829.0, and the fluorescence peak intensity of other material is between 336.7 and 441.9.In Permian system water, the fluorescence peak of tyrosine does not appear in DOM; The fluorescence peak of class fulvic acid is the most remarkable, and fluorescence intensity is 887.7; The fluorescence peak of tryptophane and class humic acid is also more obvious, and fluorescence intensity is respectively 509.8 and 544.8.In Carboniferous system water, the fluorescence peak of tryptophane, class fulvic acid and dissolubility microbial metabolic products has appearred in DOM, and fluorescence intensity is respectively 858.5,478.1 and 1424.0.In Cambrian system water, the fluorescence peak of tryptophane and dissolubility microbial metabolic products has only appearred in DOM, and fluorescence intensity only has respectively 280.0 and 88.3.Utilize content's index and the fluorescent characteristics of above-mentioned DOM, can very clearly distinguish the Features of Hydrochemistry in each water-bearing zone, for the mine water inrush water source, differentiate scientific basis is provided.
It is evident that, above description and record are only for example rather than in order to limit disclosure of the present invention, application or use.Although described in an embodiment and be described in the drawings embodiment, but the optimal mode that the present invention does not limit by the accompanying drawing example and the conduct of describing is in an embodiment thought at present to be to implement the specific examples of instruction of the present invention, and scope of the present invention will comprise any embodiment of the instructions that falls into front and appended claim.
Claims (3)
1. mine water inrush water source method of discrimination, its concrete steps are as follows:
1) determine the target area hydrogeological characteristics; After collecting the geology-hydrogeologic data in target mining area and investigating on the spot, the hydrogeological distribution plan of establishment target area;
2) water sampling and detection are carried out in target area; Carry out water sampling according to the hydrogeological distribution plan of target area, on vertical,, according to the degree of depth of different water cut layer, gather different water cut layer water sample; Upwards flat, water flow field under base area, gather same water-bearing zone upstream and downstream water sample; Then, detect TOC, UV in water sample
254Index, and detect the three-dimensional fluorescence spectrum of DOM;
3) the water sample information of target area is carried out initial analysis; According to the water-quality guideline detected value that obtains, differentiate DOM content difference, fluorescence fingerprint difference in the different water cut layer, determine suitable excitation wavelength interval and emission wavelength interval, tentatively determine the finger-print region of tyrosine, tryptophane class, class fulvic acid, dissolubility microbial metabolic products and class humic acid in water;
4) determine the three-dimensional fluorescence spectrum fingerprint sensitizing range of DOM in the different water cut layer of target area;
5) set up the Features of Hydrochemistry information table of each water layer of target area.
2. mine water inrush as claimed in claim 1 water source method of discrimination, is characterized in that, in step 2) in utilize fluorospectrophotometer to detect the three-dimensional fluorescence spectrum of DOM.
3. mine water inrush as claimed in claim 1 or 2 water source method of discrimination, it is characterized in that, in step 5) based on the study area hydrogeological condition, analyse in depth DOM content, fluorescence fingerprint sensitizing range and fluorescence peak intensity in the different water cut layer, utilize DOM to set up the Features of Hydrochemistry information table in each water-bearing zone.
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| CN103674921A (en) * | 2013-12-18 | 2014-03-26 | 安徽理工大学 | K-nearest neighbor based detection method for predicting underground coal mine water bursting source |
| CN104122319A (en) * | 2014-08-13 | 2014-10-29 | 北京华安奥特科技有限公司 | Method and system for identifying water source in mining area based on ion composite electrode detecting technology and spectrum analysis technology |
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