30results about How to "Not easy to collapse holes" patented technology

The invention discloses a drilling method of a long spiral extrusion pile drilling machine. The drilling method includes step a, pushing a drill pipe vertically and downwardly to drill a hole; step b,when the drill pipe reaches a certain drilling depth, pulling up the drill pipe; step c, adding an assistant extruder into the drill hole, and re-pushing the drill pipe; step d, repeating the steps S2 and S3 until the drill hole is formed. The invention further discloses the long spiral extrusion pile drilling machine. The long spiral extrusion pile drilling machine comprises an extruding machinebody, a pile frame, a drilling mechanism and a hoisting mechanism. The pile frame is vertically fixed to the extruding machine body, the drilling mechanism slides on the pile frame, and the hoistingmechanism used for driving the drilling mechanism to lift up and down is arranged on the extruding machine body. The drilling mechanism comprises a mounting plate, a power head, the drill pipe and a roller bit. The mounting plate is connected to the pile frame slidably. The power head is fixed to the mounting plate. The drill pipe is arranged on the lower side of the mounting plate, and is connected with the power head rotationally. The roller bit is fixed to one end, away from the power head, of the drill pipe. During drilling, the drill hole is reinforced, drill pipe lifting can be realized,and accordingly, the drill hole is not easy to collapse.

A construction method for precision perforation drainage holes in coal mine underground roadways comprises a precision opposed perforation directional drilling tool assembly, a pull back-type reaming bit, a wall protective steel casing and the like. The method utilizes a measurement while drilling system, a deflecting drilling tool and a precise drilling track control technology to work accurately to perforate drilling holes to connect a water outlet roadway and a drainage roadway, after the drilling holes are perforated, the pull back-type reaming bit is replaced to expand in the reverse direction without lifting a drill, multistage reaming is conducted repeatedly, a variable diameter is changed in a perforation roadway, the wall protective casing with a large aperture is connected, the wall protective casing is cased off in the whole process in a pull-back mode, grouting solidification is conducted, and a drainage shock tube is mounted for filtering debris in water of the water outlet roadway. Therefore, the construction method of the precision perforation drainage holes in the coal mine underground roadways can effectively ensure that the drilling holes in the drainage roadway are perforated precisely and the large-diameter casing are cased off in the whole process, so that special drainage roadway excavation construction are replaced effectively, and cost of coal mine water treatment is greatly reduced.

The invention discloses a construction process of a caisson vibro pile composite foundation, the construction method comprising the following steps: a. positioning; b. embedding a casing; c. vibrating sinking debugging; d. . Vibration sinking; f. Prefabricated tube well extension; g. Continue vibrating sinking; h. Filling; k. Vibration density, pile formation; The invention has the characteristics of reliable technology, simple and convenient construction, not easy to collapse the hole during the hole forming process, easy to ensure the quality of the pile body, fast foundation reinforcement speed, good effect, high foundation bearing capacity and the like.

The invention provides a jet-type hole forming tool. The jet-type hole forming tool comprises a Luoyang shovel with a hollow shovel handle, an air supply pipeline is connected to an air inlet of the tail end of the shovel handle, and an air blowing hole facing to a shovel body is formed in the other end of the shovel handle. The width of the shovel body is greater than the diameter of the shovel handle. The jet-type hole forming tool uses the shovel body at the front end of the Luoyang shovel to cut soil mass, the soil mass cut by the Luoyang shovel is blown by an air jet formed by high pressure air generated by an air compressor, the soil mass is discharged from a gap between the Luoyang shovel and hole bodies, disturbance to the soil mass is less, hole collapse is not prone to being caused, the hole collapse rate is low, power consumption is low, energy is saved, the construction speed is high, hole forming efficiency is high, and the construction period can be effectively shortened.Meanwhile, the number of construction personnel is small, the use position of equipment is flexible, a required working face is small, and disassembly and installation are convenient.

The invention discloses a long spiral cast-in-place pile construction process which includes the steps that step one, a long spiral pile machine is used for spirally and rotationally cutting a soil body downwards till a drill rod reaches a pile bottom elevation designed for construction; step two, prepared slurry is pumped through the drill rod of the long spiral pile machine, and the drill rod is lifted upwards while pumping the slurry till the bottom of the drill rod reaches the ground; step three, the long spiral pile machine moves, the steps are repeated, and hole-forming drilling process procedures of a next pile is carried out; and step four, a reinforcement cage is put down into a pile-formed hole where the slurry is pumped through a crane, and then concrete is poured to a pile top elevation of a construction design. According to the long spiral cast-in-place pile construction process, by pumping the prepared slurry into the pile-formed hole for protecting a wall, the pressure of surrounding soil is balanced, hole collapse is not likely to happen, the long spiral pile machine can continuously form holes, and the construction efficiency is greatly improved; the reinforcement cage is adjusted from a rear position to a front position, so that quality is guaranteed; and meanwhile, only common concrete is poured, so that cost is reduced, the multiple pile-formed holes can be poured together, and construction time is saved.

The invention relates to a soft soil layer foundation pit side slope anchor rod drilling device. The soft soil layer foundation pit side slope anchor rod drilling device comprises a mounting bracket arranged on a breaking hammer head of a hydraulic breaking hammer, a first mounting plate arranged at the bottom of the mounting bracket and a steel pipe arranged on the first mounting plate and used for drilling. The steel pipe is arranged on the breaking hammer head of the hydraulic breaking hammer to form a drill rod, and the hydraulic function of the breaking hammer head is used for ejecting the steel pipe into a soil layer, and a hole is formed after the steel pipe reaches the design depth. The soft soil layer foundation pit side slope anchor rod drilling device is suitable for soft soil layer side slopes.

A rotary excavating drill based hole cleaning tool for slag removal in karst area comprises a circular steel plate, wherein the diameter of the steel plate is equal to that of the bottom of a drill bit of the rotary excavating drill with the drill teeth removed, an open hole with the diameter equal to that of a drill rod on the drill bit is formed in the center of the steel plate, notches are formed on the two sides of the open hole and in the steel plate and correspond to hole-free parts at the bottom of the drill bit, and the steel plate is installed at the bottom of the drill rod through the open hole. A manufacturing method comprises the steps of: all drill teeth at the bottom of the drill bit of the rotary excavating drill are detached; the steel plate is cut into a round shape according to the diameter of the drill bit; a hole is formed in the center of the steel plate according to the diameter of a drill rod on the drill bit, and notches are formed in the steel plate according to a hole-free part in the bottom of the drill bit; and the modified steel plate is mounted at the bottom of the drill bit to form a complete slag extraction tool. The construction method comprises thesteps of: after drilling is completed, the rotary excavating drill based hole cleaning tool for slag removal is used for going deep into the hole bottom; the steel plate rotates repeatedly all the time in the working process of the rotary excavating drill; and when the rotary excavating drill is closed, the steel plate stands still for half a minute and then is slowly lifted out at a constant speed for throwing out the removed slag.

The invention provides a construction method of a sandy soil geological cut-off wall. A planned position of the cut-off wall is drilled along two sides of the width, so that a row of grouting holes and a row of negative pressure holes are formed; a PC pipe with two opened ends is inserted into each negative pressure hole; then at the same time during grouting into each grouting hole, and a negative pressure is applied to the upper end of the PC pipe in the negative pressure hole corresponding to the grouting hole being grouted, so that guide force is formed between the grouting hole and the negative pressure hole, and paste in the grouting hole penetrates clearance in sandy soil under effects of the guide force and gets cured gradually to form the underground cut-off wall. The method disclosed by the invention has the beneficial effects that the characteristic of good penetration performance of sandy soil geology is utilized, the sandy soil is coordinated with the grouting method, thecut-off wall with mixing of the sandy soil and cement is finally formed, construction is easy, efficiency is high, and anti-seepage effects are good; and the paste forms the wall under guidance of theguide force, a sandy soil stratum is cured by the cement paste, and the characteristic of a high permeability rate of the sandy soil is effectively utilized, so that the underground cut-off wall is built without disturbance of the stratum, and the method is beneficial for environmental protection.

The invention discloses a construction method for a full-casing full-slewing drilling machine pile foundation adjacent to a subway. The construction method comprises the following steps that S2, a full-slewing drilling machine is placed in place, the center of a base of the full-slewing drilling machine is aligned with the center of a pile placing position, and the base is adjusted to a horizontal state; S3, steel casing sections are connected on site to reach the preset length of a pile casing, and a drill bit is arranged at the end of the first steel casing section; S4, the pile casing is hoisted and the pile casing is connected with the full-slewing drilling machine; S5, the pile casing is vertically driven into a soil layer, a pile hole is sequentially divided into an upper section, a middle section and a lower section from top to bottom for construction, and the subway structure is located within the range of the middle section; S6, after the drilled hole reaches the required depth and the pile hole is checked to be qualified, the hole is cleaned; and S7, a reinforcement cage is hoisted, and in the hoisting process, the reinforcement cage is kept vertical all the time and is coaxial with the pile casing. The construction method for the full-casing full-slewing drilling machine pile foundation adjacent to the subway has the effects that disturbance of pile foundation construction to soil around the subway tunnel is reduced, hole collapse is not prone to occurring, and safety risks caused by pile foundation construction to the subway structure and subway operation are reduced.

The invention relates to a high-water-level long spiral well completion construction process, and belongs to the technical field of water intake well construction. The construction process comprises the following construction steps: a long spiral drilling machine is used for drilling to a designed depth; a drill rod is pulled out of a drill hole, and slurry is poured into the drill hole; after the drill rod is completely pulled out, a permeable pipe is put down into the drill hole; high-concentration slurry in the drill hole is replaced with low-concentration slurry; an annular gap between the permeable pipe and the drill hole is filled with gravel; and clean water is used for well washing operation. The long spiral drilling machine is adopted for drilling construction, compared with a direct circulation drilling machine or a reverse circulation drilling machine, a drilled hole is formed at a time, the drill rod of the long spiral drilling machine is continuously located in the drilled hole in the drilling process, the drill rod plays a role in supporting the side wall of the drilled hole, and the phenomenon that the drilled hole collapses is not prone to occurring.

The invention discloses a device for self-expanding of an expanded base, The device comprises an outer wall of a self-expansion box body and an I-shaped structure, wherein an self-expansion material is filled in the self-expansion box body, the self-expansion box body and the I-shaped structure limit the upward and downward expansion force of the expansion material, so that the self-expansion material can only horizontally expand. According to the device, the self-expansion material can be poured into the device, the expansion performance of the self-expansion material is utilized to form an expansion head, the formation of the expansion head is free of pollutant of noise, dust and the like, and is economical and practical, operation is convenient and application range is wide, the designrequirement of a pile foundation with relatively high requirement on the bearing capacity and the pulling resistance can be well met.

The invention belongs to the technical field of reverse circulation drilling, and particularly relates to a novel reverse circulation drilling method. The novel reverse circulation drilling method comprises the following steps of arranging a circulating pool, preparing slurry, drilling holes and detecting formed holes. The novel reverse circulation drilling method has the beneficial effects that the holes are not easy to collapse in the drilling process; the multiple adjacent holes do not influence one another during construction; and the hole forming index is good.

The invention discloses an energy-saving type open caisson vibroflotation pile composite foundation construction technology. A construction method of the technology includes the following steps that a, positioning is carried out; b, pile casing embedding is carried out; c, vibroflotation sinking debugging is carried out; d, prefabricated tube well embedding is carried out; e, vibroflotation sinking is carried out; f, prefabricated tube well spreading is carried out; g, vibroflotation sinking is continuously carried out; h, energy-saving mixing material pouring is carried out; k, vibration and pile forming are carried out; and m, transposition is carried out. The energy-saving type open caisson vibroflotation pile composite foundation construction technology has the beneficial effects that the technology is reliable, construction is easy and convenient, the construction cost is low, re-utilization of resources can be achieved, hole collapsing is not prone to occurring in the hole forming process, the pile body quality is easily guaranteed, the foundation stabilization speed is high, the foundation stabilization effect is good, and the foundation bearing force is high.

The invention provides a guide hole type static pile driver. The guide hole type static pile driver comprises a static pile driver, a side pile and guide hole equipment, the hole guiding equipment comprises a hole guiding base and a hole guiding mechanism, the hole guiding base is installed on the static pile driver, the hole guiding mechanism is detachably installed on the hole guiding base, the hole guiding base is at least provided with a first installation position and a second installation position, and when the hole guiding mechanism is installed at the first installation position, the hole guiding mechanism corresponds to a pile pressing mechanism of the static pile driver. The hole guiding mechanism is arranged corresponding to the pile pressing mechanism of the side pile when being mounted at the second mounting position; the hole guiding mechanism comprises a hole guiding device and a spiral drill rod, the spiral drill rod is installed on the hole guiding device, the hole guiding device is used for driving the spiral drill rod to rotate, and the maximum diameter of the spiral drill rod is smaller than the diameter of the inner ring of the prefabricated pipe pile. Meanwhile, the invention further provides a construction method of the guide hole type static pile driver. Compared with the prior art, the guide hole type static pile driver and the construction method thereof can better guarantee the construction quality of the prefabricated pipe pile.