TW475026B - Method and device of taking earth sample and rock sample at anchor base area used in anchor drilling - Google Patents

Abstract

This invention of a method and device collects earth sample and rock sample at anchor base area used in anchor drilling. It provides a way to collect earth sample or rock sample instantly whenever a variety of earth/rock is detected in anchor drilling work to provide useful data for engineers to check the anchor length to ensure security of the anchor. Devices applied include a sample taking tube, several, bottom joint, top joint, waste earth pipe, drilling rod guide with the steel rings, which is to be put in the sample taking tube, of the same size as that of direct shearing testing machine in the laboratory. The way of sample collecting uses caterpillar tread, drilling machine, and drilling rod combined with the sample taking tube of this invention to slightly drill and hit the earth/rock before lifting the rod and undoing the sample taking tube for testing of direct shear strength or testing of single-axis compressive strength of rock in the laboratory.

Description

475026

This ^ Mingming is a kind of soil sample or core sample taken from the anchorage section during the drilling of ground anchors. ^ "Setting" is mainly to provide a geological abnormality in the ground anchor drilling operation: the soil or core samples can be taken immediately for engineers Investigate the geology and check the length of the anchoring stone to ensure the safety of the anchorage; its device includes a sampling pipe, several steels, lower joints, upper joints, waste soil pipes, drill pipes, etc., and its characteristics are the size of the steel ring of the sampling pipe and The size of the direct shear machine used in the laboratory is the same. The second method is the method of using a crawler drill pipe in combination with the sampling tube of the present invention to slightly drill the t 1 ft but lower the sampling tube. It is sent to the laboratory for direct shear testing or Special method and device for core early axis compression test. Ground fault 2 The degree of resistance to buoyancy and the diameter are fundamental, but the actual measurement should standardize the whole seedlings and rock tin anchors "3 · 1 · version for safety. ^ Cheng has been recognized by Chinese and foreign scholars and experts as the slope stability and the most profitable building. However, the length of the anchor section of the design engineer designed the ground anchor is calculated based on the parameters of the drilling report. 0 square meter drilling of a hole as a sampling sample except the geological change or abnormality is not a standard system as an acceptable inspection. 70 Public Works Commission "Public Engineering Construction Outline, Flat 1 Λ Integration Center" Anchor "," Pre-stressed steel key geotechnical outline outline code "Chapter M492" Pre-stressed steel key geosynthesis and rock shale hole part 'expressly stipulated ^ The fixed section should take a soil or core sample engineer to judge geology and check the length of the anchor shale section To ensure that the anchors are equipped with crawler drills and rock tin drills, they are crawler-type ballast rigs, and there is no sampling preparation. Generally, the soil samples are taken vertically to allow you to sample and you must replace the crawler-type drill rigs: s sampling 'this kind of operation can only be carried out, during which the machinery and related 2 rigs to take samples, and it is inconvenient to change; and when

475026

When encountering oblique holes, because it is necessary to re-move the equipment and fix the equipment on the slope, it is not only laborious and time-consuming, but also often causes construction workers to ignore the important sampling process, which will cause the instability of the ground anchor in the future. • In addition, according to the current ASTM D1 587-83 standard for thin tube sampling, where the area percentage is less than 10 and the percentage of headroom in the tube is between 5 and 5 ', due to the continued use of this thin tube specification, it has exceeded 4 5 Over the past few years, the following problems have occurred: 1 · Sampling thin-tube is thin and easy to dent under pressure; 2 · Sampling thin tube tip is damaged when it encounters slightly hard sand or gravel; 3 · Sampling thin upper part has 3 / 8 ”screw holes are locked with 5/1 6 " screws, in the case of slightly hard ground, the screws have been cut off and the thin tube has fallen off; 4. The sampling tube must be jacked to send the soil in the thin tube to the laboratory In the process of sample extrusion, the soil sample is directly squeezed by the jack to make the pores more or less compressed and deformed. 'The original sample of the soil sample and the water content are changed. The calculated value of c must be the angle or compressive strength will be incorrect. The inventor feels this, and especially researches and invents a method and device for taking a soil sample or core sample for the anchorage section when drilling a ground anchor. The casing used by the conventional ground fault drilling machine is 133mm0 and i18mm0, the inner diameter of the sleeve is 105mm0 and 90mm0 The outer diameter of the sampling tube of the present invention is about 76 π 0, the inner diameter of the steel ring (usable stainless steel) in the sampling tube is about 2.5 mm, about 63 mm 0, and the length is 25 mm, which is 1 ", and the direct shear force. The size of the machine shear slot is the same. The principle of the length of the sampling tube is 30 (: 111, 12 can be installed on the 12th, and the length and size can be adjusted, as long as it is suitable for the size of the test instrument. In order to further understand the method steps and composition of the present invention Device

475026 V. Description of the invention (3) '' 'The drawings are described below. I believe that the features of the present invention can be further understood through the following description: As shown in the first figure,' is a schematic diagram of the sampling tube assembly of the present invention; When the ground anchor drilling is encountered with suspicious geology, first the inner rod is lifted out, and the upper joint 40 of the sampling pipe 10 of the present invention is connected to the drill pipe 60 by the screw thread 401, and the sample is taken down to a predetermined depth, and the upper The joint 40 is provided with a vent hole 403 and screw teeth 401 and 402. The upper drill pipe 60 is connected to the earth pipe 30 and the sampling pipe 10, and the sampling pipe 10 is provided with a steel ring 50. The bottom of the sampling tube 10 is then joined with the lower joint 20, and the lower joint 20 is provided with a sharp tapered edge 2015 to facilitate penetration into the formation. The first diagram is a schematic diagram of the steel ring of the sampling pipe device of the present invention. The sampling pipe 10 is connected to the joint 20, and the inner diameter of the bottom of the lower joint 20 is slightly thicker than the diameter of the steel ring 50, so as to hold the steel ring 50 upward. . The third figure is a schematic view of the sampling tube 10 of the present invention installed in a steel ring 50. The size of the steel ring 50 is the same as the size of the inner groove of the shear meter of the direct shear machine in the laboratory, so that the soil sample can be directly loaded into the shear meter. Inside the slot. The fourth diagram is a schematic diagram of the soil pipe 30 of the sampling pipe 10 device of the present invention. Generally, when the sampling officer 10 takes a soil sample, the soil sample above a predetermined depth is often selected and the water content is high. Therefore, the waste soil pipe 30 must be installed first. ς The soil sample is squeezed into the soil pipe 30. The fifth picture, which is played again and again, is the simple and easy-to-take + soil of the present invention to expose 7Π Λ Situ I 'take out the sample 70 in the sampling tube 10, and use the top soil plate δ on the top soil rod 80 Inside the steel ring 50, force the sampling tube to cover the sampling tube 10 r, ten, w & 丄 U downwards, then the steel ring 50 can be broadcast pressure ", if it is very difficult to eject, close ^ = Sample ejection.

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The sample is not intended. The sampling tube 10 is ejected along for engineering. If necessary, it can be sent to the laboratory for direct compression strength to ensure that the anchoring force is connected to the teacher. The sixth picture is the simple removal of the soil under the present invention. Pressure, the top soil plate 801 stands against the steel ring 50 to determine the geology and check the length of the anchorage section, to obtain a C value of 0 angles or to perform uniaxial resistance. The method of the present invention is to drill to the After the reservation, it will be ready to go out, and then enter the present invention to construct its y, and then remove the sampling tube 'send the sampling tube to the test' room, after a slight drilling, 'start test or core uniaxial compression test, etc. Two = method of direct shear force The characteristics of the present invention are:! · The use of the crawler-type drill rig of H ㈣, drilling material can be found on the ground: the inner rod 'and then into the sampling tube of the present invention Remove the soil or core sample correctly. j Force 2 ~ The size of some steel rings built into the sampling tube of the present invention is the same as that of the test machine. The size used by the force machine is the same. 'So the samples taken on site can be sent directly to the ^ laboratory'. You can put the direct shear force after the output. In the instrument, keep as much as possible to obtain the correct C value 0 angle. 3. The sampling tube of the present invention is sent to a testing room. If a uniaxial compression test is to be performed, the soil sample in the steel ring must be taken out, and the uniaxial test can be performed. The operation is convenient. The purpose of the present invention is: 1 · If abnormal geology is found in ground anchor drilling, for example, the drilling speed changes or the sound t is different, the inner rod can be lifted at any time, and the sampling tube of the present invention is taken to take a soil sample or core sample for engineers to judge geology and check Anchor segment length.

475026 V. Description of the invention (5) 2. Generally, the crawler drill rig has no sampling equipment, such as those that have been disturbed by broken rock slag are not the standard 1 ^ ^ 7 ^ is ^ ^ ^ ^ ^ ^ & & The flat soil slaves, so through the sampling of the soil samples taken by Lu in the present invention, to maintain the original sample, the original sample and water can be kept in the sampling tube and sent directly to :: Make sure the wrong stone is safe.彳 仏 工 ㈣ 才 fathers check the length of the wrong stone, 3 beneficiaries Qian Ming can provide the trouble of removing soil samples without changing the traditional rig, saving the time price ^ Special feature described above Dong Dong's method and device does have The industry used Φ to sample the suspected strata 'providing a quick, convenient and economical approach', and has already applied for the patent requirements for the invention and applied for it according to law.

475026 The diagram is not simple. The first diagram is a schematic diagram of the sampling tube assembly of the present invention. The second diagram is a schematic diagram of the steel ring of the sampling pipe device of the present invention. The third diagram is a schematic diagram of the sampling pipe of the present invention inserted into the steel ring. The fourth diagram is a schematic diagram of a soil pipe of the sampling pipe device of the present invention. The fifth diagram is a schematic diagram of a simple soil sample of the present invention. The sixth diagram is a schematic diagram of a simple soil sample of the present invention. Description of the drawing number 10 ------ sampling tube 20 ------ lower joint 201-sharp tapered blade 30 ------ soil pipe 40 ------- upper joint 401 402--Screw teeth 5 0 ------ Steel ring 60 ----- Drill pipe 70 ----- Soil sample 80 ----- Top soil rod 8 0 1 --- Top soil plate

Claims (1)

475026 1. A kind of device for taking soil samples or core samples during anchor drilling in ground drilling. Main = When geological abnormalities are found when drilling for ground anchors, samples of soil samples or cores can be sampled. Length, 俾 ensure anchor = queen, >, device features include: a sampling tube, several steel rings, lower-= joints on the second plant, a waste soil pipe, a drill pipe, etc., joints on the sampling pipe hunting teeth, After connecting the drill pipe, the upper joint is provided with a vent hole and a screw thread, and the upper drill pipe is connected with a soil g sampling officer. The sampling pipe is equipped with a plurality of steel rings. The bottom of the sampling pipe is connected with the lower joint. The lower joint is provided with a sharp Tapered edge to penetrate into the formation. ^ • The device for taking soil supplement or stone core samples in the anchor rotation section according to Item 1 of the stated patent scope during drilling, in which the size of the steel ring in the sampling tube and the direct shear machine used in the laboratory The same size. 3. The device for taking soil ^ or core samples during the anchorage section drilling of the ground anchor according to item 丨 in the scope of the patent application, wherein the sampling tube is connected with a joint, and the inner diameter of the bottom of the joint is slightly thick and smaller than steel The diameter of the ring in order to top the steel ring. 4. A method for taking soil samples or core samples from the anchorage section during the drilling of ground anchors: a. When the ground anchor is drilled and a suspicious geology is encountered, the inner rod is first pulled out and the sampling tube is assembled. The upper joint is connected to the drill pipe with screw teeth. After drilling down to a predetermined depth, the drill pipe is lifted to remove the sampling pipe. Sampling the soil sample taken from the g and using the top soil plate on the top soil pipe to hold the steel ring in the sampling pipe. Press the sampling tube down firmly, and the steel ring can be squeezed out. If it is very tight and difficult to eject, use a hydraulic jack to eject the soil sample; eg, water, 475026 Page 11