120 results about "Adit" patented technology

An infiltration cannula and method of using the infiltration cannula during a tumescent infiltration procedure are disclosed herein. The infiltration cannula may have an outwardly flaring hub which may be wedged into an adit of a patient to minimize leakage of fluid being infiltrated into the patient. Also, the infiltration cannula may be utilized to hydrate a dehydrated patient by a medically untrained person. The infiltration cannula may also be used to deliver an antibiotic/vasoconstrictive drug solution to minimize surgical site infections.

The invention provides an isolation processing method of polluted groundwater. The isolation processing method comprises the following steps: an anti-seepage curtain separated moderately-strong permeable layer is established through a vertical anti-seepage system and a horizontal drill hole or an adit, and a vertical and horizontal draining device and a monitoring system are arranged in a weak permeable layer to change and control the groundwater seepage path to control the groundwater leakage amount of the weak permeable layer, so that the requirement that the permeability coefficient reaches 10<-7> cm/s is met, and the influence of groundwater seepage pollution on the surrounding environment can be completely controlled. The isolation processing method combines a vertical anti-seepage technology, a horizontal and vertical groundwater draining and dynamic monitoring technology and a dynamic groundwater control technology, and thus has a high application value, and is especially suitable for seepage control of polluted groundwater in a tailings impoundment and other polluted groundwater.

The present invention provides a combined exploitation method for a beneficial mineral open well is covered under a strip mine boundary slope. The problems to be solved by the combined exploitation method are as follows: firstly, a spiral drill is used for recovering, a stable is required to be reserved between two drills due to the restriction of the length of a drill rod, so the percentage extraction is very low; secondly, a slope mine is excavated from the proper position on the surface of ground, a roadway is extended to a ledge for arranging a mining area, and underground mining is realized. The slope mine construction and support project quantity is large, which is expense-wasting and time-consuming. In the key points of the combined exploitation method, the ledge section at the boundary slope of the goaf of the strip mine is used, a main adit and a secondary adit are excavated in the ledge directly and are extended into the boundary slope for arranging the mining area to realize the underground exploitation and recovery of the beneficial mineral in the strip mine boundary slope. Then the mineral is transported to the ground by a transportation channel or a haulage plant which is formed in a strip mine stope. The combined exploitation method has the advantages of saving a great deal of slope mine construction project quantity and support project quantity, avoiding the unsafe factor of the slope mine during the processes of construction and operation and improving the production system safety of the mine.

The invention discloses a continuous miner drilling-type paste filling mining method for end slope coal, and belongs to the field of coal mining methods. The problems of the poor filling rate and topfilling effect, the low resource recovery rate, destruction of the ecological environment of a mining area, poor slope stability and the like when people enter an adit to pave filling pipelines duringexisting mining of end slope coal are solved. The end slope coal of an open-pit coal mine is divided into several sections, a plurality of mining adits are planned in the sections, and inter-mining-adit coal pillars are reserved among the mining adits; and initial skip-mining is carried out in the sections, at the same time, a plurality of filling holes are formed in the upper earth surfaces of the middles of the mining adits, a steel sleeve sleeving wall is adopted, after a high-concentration filling body is injected into the mining adits for mining, a goaf is formed, the filling operation is completed in two times, and the secondary mining is carried out after the initial mining is completed in the sections until the mining and filling of the mining adits in all sections are completed.The safety during mining and filling can be improved, and personnel are not needed to enter a roadway; and the filling process is simplified, and the filling cost is reduced.

The invention discloses an advanced adit hole-by-hole delayed blasting network in tunnel blasting. The network is characterized in that blasting excavation is performed by using a three-step method for an underground excavated metro interval tunnel; longitudinal excavation is performed along the tunnel to form an upper step, a middle step and a lower step in sequence; the excavation of the upper step is performed by prearranging each external contour overhead hole at equal intervals along the upper arch of an excavation contour line of the upper step; an advanced adit is arranged at the bottom; a central blast hole is positioned in the geometric center of the advanced adit; four central overhead holes are prearranged at the positions of four vertexes of a square ring with the central blast hole as the center; the advanced adit and an upper step expanded excavation region are blasted at two steps; the advanced adit hole-by-hole delayed blasting network is arranged in the way that each layer of expanded slot blast holes is arranged at the periphery of the central blast hole at intervals from near to far away from the central blast hole; the first layer of expanded slot blast holes are crosswise distributed at the periphery of the central blast hole and form the square ring together with four central overhead holes. The detonation explosive load of the same section is greatly reduced by using hole-by-hole delayed blasting.

The invention provides a method to detect dendroctonus valens and a detection kit. The detection method is a nested polymerase chain reaction (PCR). Nucleotide sequences of a first pair of used primers are shown in SEQ ID NO.1-2, and nucleotide sequences of a second pair of primers are shown in SEQ ID NO.3-4. The invention further provides a kit for detecting the dendroctonus valens. The method to detect the dendroctonus valens and the detection kit have the advantages of being precise in detection, strong in specificity, simple, convenient and quick, can discriminate the dendroctonus valens from four kinds of similar bark beetles including scolytus schevyrewi semenov, round cavity timber beetles, xyleborus interjectus blandfor and adit cutting beetles, and is good in dendroctonus valens detection capacity. The detection sensitivity is 40pg.

The invention relates to a method and a system for electronically acquiring geological survey adit joint data. The method includes steps of S1, acquiring geometric information of survey adits and drawing planar electronic grid adit three-wall display graphs; S2, selecting a plurality of geological points from adit joints, measuring location information and joint attitude information of the various geological points, generating geological points with attributes on electronic grids and sequentially connecting the geological points with one another to form joints; S3, determining joint groundwater states and joint state information according to site conditions and attaching the joint groundwater states and the joint state information to the corresponding joints; S4, repeatedly carrying out the steps S2 and S3, forming catalog results of the integral adits, updating work results and uploading the work results to general databases to summarize the work results. The method and the system have the advantages that the method and the system are beneficial to improving the efficiency of geological catalog work, and adit data acquisition processes can be electronized and standardized.

The invention discloses a high-definition drilling color television-based rock mass structure surface search method. The method comprises the implementation steps of extracting information such as spatial coordinates, occurrence, characters and the like of a structure surface according to geological surveying and mapping, exploratory adit geological recording and high-definition drilling color television interpretation; establishing a spatial planar geometric equation of the structure surface; comparing spatial positions and characters of two structure surfaces; and judging whether a spatial relationship between the two structure surfaces belongs to the same structure surface or not. The method is used for finding out characteristics of spatial distribution, characters and the like of thestructure surface in rock mass; structure surface information disclosed by drilling is fully utilized; the limitation of a conventional method is overcome; the search range is expanded; the search reliability is improved; and the method has the characteristics of simple operation and high reliability.

The invention belongs to the technical filed of water conservancy and hydropower underground projects, and discloses a large-section steep hill long inclined shaft high-precision pilot shaft excavating construction method and system and application. A full-section drilling and blasting method is adopted for excavating to form an upper adit and a lower adit, and the upper adit and the lower adit serve as a construction channel; after the upper adit is formed, the upper adit is used as the construction channel, and a directional drilling machine is mounted and debugged, and carries out forward drilling to excavate a high-precision pilot hole with the diameter of 216 mm; after the high-precision pilot hole with the diameter of 216 mm is formed in the second step, a hole is drilled in a directional manner and connects with the lower adit, a drill pipe is pulled out, a drill bit is replaced to process the pilot hole into a hole of the diameter of 250 mm in a brushing manner, and the directional drilling machine is dismounted; the above work is finished, a raise boring machine is mounted and debugged, and forward drilling is carried out to excavate a drill hole of the diameter of 270 mm;and after work in the fourth step is finished, the lower portion of the raise boring machine is provided with an expanding excavation drill bit, and the pilot hole is subjected to expanding excavation from bottom to top to form a pilot shaft with the diameter of 2.2 m. The mechanization level is high, and the construction efficiency is high.

The invention provides a method for exploiting two layers of coal seam gas. The method comprises the following steps that a near vertical well and a far vertical well are drilled in the distance at a preset distance with a main roadway; a ground horizontal well is drilled, directional angle building is conducted on the ground horizontal well to a lower coal seam, a horizontal section of the ground horizontal well penetrates through the far vertical well firstly and then penetrates through the near vertical well in the lower coal seam; directional angle building is conducted on the ground horizontal well to an upper coal seam, the horizontal section of the ground horizontal well penetrates through the far vertical well firstly and then penetrates through the near vertical well in the upper coal seam; an adit horizontal well is drilled along the upper coal seam in the main roadway; two layers of coal mine seam sections of the near vertical well and the far vertical well are subjected to broaching, and the ground horizontal well is made to communicate with the adit horizontal well and the vertical wells; and coal gas exploiting is conducted through the near vertical well and/or the far vertical well and/or the ground horizontal well and/or the adit horizontal well. According to the technical scheme, the problem that in the prior art, simultaneous exploiting of the upper and lower coal seam gas cannot be conducted on the coal seam gas in the two coal mine seams which do not communicate mutually is solved.

The present invention discloses a plateau long tunnel multi-dead end ventilation construction method. A tunnel inclined shaft is disposed at one side of a main cave of a plateau long tunnel, a middle connection section of the main cave is an inclined shaft auxiliary construction section which is divided into an inclined shaft auxiliary construction entrance section and an inclined shaft auxiliary construction exit section, and the inclined shaft auxiliary construction exit section has a sudden surging point and intersects with derious parallel adits. The construction method comprises a first step of ventilator installation; and a second step of tunnel excavation construction, carrying out excavation construction on the inclined shaft auxiliary construction entrance section and the inclined shaft auxiliary construction exit section through the tunnel inclined shaft while carrying out excavation construction on a tunnel entrance section and a tunnel exit section, and assisting the excavation construction through the derious parallel adits while carrying out excavation construction on the inclined shaft auxiliary construction exit section. The method provided by the present invention is simple in procedure, reasonable in design, convenient to construct, excellent in ventilation effect, and capable of solving problems of a large amount of roadways requiring ventilation during a tunnel construction process, long ventilation distance and large difficulties in ventilation construction.

The invention discloses a construction method and structure of a dam toe hydropower station workshop retaining wall. The method is characterized in that after a foundation pit of a workshop is excavated, firstly, the workshop retaining wall is constructed at the side, close to an earth and rockfill dam, of the foundation pit, an obstruction barrier is formed between the workshop and the earth and rockfill dam, and therefore the phenomenon that large construction rocks of the earth and rockfill dam roll into the foundation pit of the workshop, so that safety of the workshop structure and construction personnel is endangered is prevented. The workshop retaining wall is constructed according to the following steps: A, concrete construction of a balance weight platform is performed; B, sloping core concrete construction is performed on the balance weight platform; and C, rock ballast backfilling is performed on the upper portion of the balance weight platform and the outer side of the sloping core. The construction method and structure are set in combination with the retaining wall of the end of the workshop, the construction structure can be used as a permanent retention wall structure of the workshop, and engineering investment is saved; a transportation channel is arranged in the wall and is connected with a construction adit of a pressure steel pipe, and construction of the pressure steel pipe is facilitated; and rock ballast backfilling is performed on the outer side of the wall, and therefore the wall can be connected with a workshop entering roadway, and the transportation problem for entering the workshop is solved. The construction method and structure have the prominent advantage that multiple purposes of one wall are achieved, water diversion lines are shortened, and project investment is saved.

The invention relates to a coal mining adit ending roadway or dead region supporting support and a hydraulic support withdrawing method and discloses a coal mining adit ending roadway supporting support. The support comprises a plurality of hydraulic supports which are arranged in an ending roadway or a dead region for supporting the ending roadway or dead region roofs. The hydraulic supports are close to one side of an ending roadway caving region and are vertically and parallelly arranged on the back goaf coal wall side arranged in the ending roadway or the dead region. A plurality of rows of hydraulic single props are further arranged in the ending roadway and are arranged along the ending roadway vertically and form a withdraw channel with one side coal wall of the ending roadway, which is away from the hydraulic supports, and the tops of the hydraulic single props support the roadway air channel. The invention further discloses a coal mining adit supporting support hydraulic support withdrawing method. By means of the supporting support and the method, recyclable support material hydraulic supports and hydraulic single props are withdrawn, and accordingly, the hydraulic support safety withdrawing is guaranteed, and potential safety hazards of withdrawing of the hydraulic supports are prevented.

The invention discloses a strip mine end slope thin coal seam dendritic reverse type underground mining method. The method includes the specific steps that S1, a continuous coal mining machine is adopted to excavate a main adit in the boundary direction of a strip mine along a coal seam bottom plate; S2, secondary adits start to be tunneled from the two sides of the main adit in the inclined front direction of the main adit, and the secondary adits are in lap joint with a plurality of sets of self-moving belt conveyors in the main adit; S3, the continuous coal mining machine is remotely controlled to be responsible for coal mining, and the self-moving belt conveyors transport excavated coal out of the main adit; S4, after excavation of one secondary adit is stopped, the continuous coal mining machine and the self-moving belt conveyors in the secondary adit are withdrawn, and subsequent secondary adits are arranged in sequence in the same way; S5, the secondary adit is filled, and a goaf of the main adit is filled; and S6, a project is circulated. According to the strip mine end slope thin coal seam dendritic reverse type underground mining method, end slope coal mining is achieved in a dendritic adit arrangement mode, so that the coal output is improved, meanwhile, coal retaining pillars and filling bodies are fully utilized to keep a roof stable, and the difficulty and the cost of construction and equipment moving are reduced.

The invention relates to the technical field of tunnel construction, and provides a construction method of constructing an outsized-section subway underground excavation station by utilizing layered auxiliary adits. The construction method comprises the steps that a main adit enters a station hall layer, an auxiliary adit is branched to enter a platform layer, and the two adits are arranged for asuper-large section tunnel and enter the upper portion and the lower portion of the tunnel correspondingly; and the main adit provides a channel for excavation construction of the upper portion of thetunnel, and the auxiliary adit provides a channel for excavation construction of the lower portion of the tunnel. By utilizing the contact channel formed by a door-type arch frame, the number of excavation faces is greatly increased, muck removing and material conveying are not mutually interfered, operation of all machines is facilitated, and quick and safe assembly-line operation is formed; during later construction of an inverted arch, an arch wall lining and a platrform layer structure, goods and materials can directly be transported and enter through the auxiliary adit; and during construction of the station hall layer structure and a wind pavilion group and an exit and entrance structure, goods and materials can directly be transported and enter through the main adit, the working efficiency is improved, and the construction progress is greatly accelerated.

The invention discloses a live-action shooting device for an exploratory adit and a high-resolution three-dimensional image reconstruction method. According to the scheme, pile numbers are made at intervals in the adit, control points are uniformly arranged at different positions in the adit through a total station, and control point coordinates are measured; a track (1) is laid on the axis in the adit, and an automatic shooting device system is installed on the track (1); the power of the automatic shooting device system is turned on, working parameters of the system are set, and image shooting and storing work of the whole adit can be completed according to a set method; series processing is conducted on shot pictures through three-dimensional live-action modeling software, and a high-resolution three-dimensional live-action reconstruction result picture of the adit is led out; at last, a series of subsequent operations comprising a series of management work such as browsing, measuring, cataloging, counting and roaming are conducted on the high-resolution three-dimensional live-action reconstruction result picture.

The invention provides a coal-mine underground-adit directional drilling machine. The coal-mine underground-adit directional drilling machine comprises a drill carriage and a pump truck. The drill carriage mainly comprises a carriage body, a clamping mechanism, an oil tank and an oil distribution sleeve. The clamping mechanism comprises a front clamping part and a rear clamping part, the front clamping part and the rear clamping part are sequentially arranged on a feed frame of the drill carriage, the oil distribution sleeve comprises a cylinder barrel and a piston, and the position between the piston and the cylinder barrel is of a double-oil-line rotary sealed type structure. The coal-mine underground-adit directional drilling machine has the characteristics of being simple and convenient in structure, compact in space, safe and reliable and the like.

The invention relates to a pressure steel pipe overhaul access passage structure of a high-water head hydropower station and a construction method thereof. The invention aims at realizing the purposes of being capable of arranging overhaul access passages on two or more parallel pressure steel pipes and simultaneously reducing the excavation of an overhaul access hole with single function, further facilitating the reduction of the hole chamber excavation engineering quantity and the shortening of the construction period and simultaneously creating convenience for daily management and maintenance. In the technical scheme of the invention, a construction adit and a pressure steel pipe at the tail end are in T-shaped arrangement, the construction adit and other pressure steel pipes are in cross arrangement and a steel climbing ladder is erected at the upper parts of the other pressure steel pipes; and the overhaul access passage is arranged on the boundary of each pressure steel pipe andthe construction adit and at the inlet end, and an access door is arranged on the outer side of the passage.The invention is applicable to water diversion buildings of the hydropower stations.

The invention discloses a construction method for tunnel double adit roof ripping. The construction method for the tunnel double adit roof ripping comprises the following steps that construction is prepared, specifically, the excavation and support of an upper adit (2) and a lower adit (3) is conducted in a staggered mode, a door-shaped steel frame is erected on the intersection port of the lower adit (3) and a positive cave (4), and the upper adit (2) enters the upper portion of the positive cave (4) in a roof ripping mode; a preliminary-stage support steel frame on the upper portion of the positive cave (4) is erected, concrete is sprayed to conduct sealing, and backfill is conducted on the portion between the roof ripping top of the upper adit (2) and the preliminary-stage support steel frame on the upper portion of the positive cave (4); a shape steel frame of the positive cave (4) is erected, an anchor rod is struck to conduct locking, concrete is sprayed to conduct sealing, and the lower adit (3) enters the lower portion of the positive cave (4); the positive cave (4) is excavated from the upper portion to the portion where the lower adit (3) penetrates through the positive cave (4), a circumferential direction steel frame support is formed, and the construction of large section weak surrounding rocks is finished. The collapse risk of a large section tunnel in a weak surrounding rock geological section is lowered.

The invention discloses a crisscross water mist fire shield system. The crisscross water mist fire shield system comprises a high-level water tank, a high-pressure fire pump, a high pressure resistant metal hose and a water mist jet device which are sequentially connected through a water delivery steel pipe. The high-level water tank is provided with a make-up water supply and a water level gauge. High pressure resistant locking adapters are arranged at the two ends of the metal hose. The water mist jet device comprises four arc-shaped metal pipes which are distributed in a crisscross mode, supporting anchors installed below the tail ends of the metal pipes, a high-pressure water uniform distributor arranged at the junction of the four metal pipes, and upper and lower reinforcing ribs connected with the four metal pipes. Upper ports of the four metal pipes communicate with the high-pressure water uniform distributor. The tail ends of the four metal pipes are closed and form a concentric circle. A plurality of water mist nozzles with openings facing downwards are arranged in the circumferential direction of the metal pipe. The crisscross water mist fire shield system is simple in structure, good in stability and large in coverage area of fire extinguishing, can rapidly and effectively extinguish fires caused by flammable liquid or gas leakage of underground pipelines as well as fires at underground adit entrances, and further has a cooling effect.